When a certain cell no longer needs a particular protein in its development, the cell stops the production of the protein by repressing transcription and translation of the gene for the protein.
The correct option is D.
What is the process of gene repression?Gene repression is the process of turning off specific genes whose byproducts are required to keep a cell functioning, such as the creation of essential cofactors or enzymes. This is crucial if the end products of these genes are short-lived, degraded, or metabolized.
Gene repression represses gene expression when the gene product such as a protein is no longer needed by the cell in its development.
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which two monosaccharides difffer the most in 3 dimensional structure d-glucose d-mamnnose d-galactose
D-glucose and D-galactose are the two monosaccharides whose three-dimensional structures diverge the greatest.
D-glucose has a "chair" conformation because it has an aldehyde group at the first carbon and a hydroxyl group at the sixth carbon. D-galactose, on the other hand, has a "boat" shape because it has a ketone group at the first carbon and a hydroxyl group at the fourth carbon.
Since glucose includes an additional -OH group, it can create more hydrogen bonds and has a different, more stable three-dimensional structure as a result.
Also, the two molecules' distinct hydroxyl group orientations impact how they interact and change the characteristics of other molecules.
The two molecules' unique characteristics, including solubility, reactivity, and activity, are a result of their differing structural makeup. D-glucose and D-galactose so vary most from one another in their three-dimensional structure.
Complete Question:
Which two monosaccharides differ the most in their 3 dimensional structure: D-glucose, D-mannose, or D-galactose?
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what other evidence would you use to analyze evolutionary relatedness among gibbons, monkeys, and humans
The evolutionary relationship is important to understand the evolution of the organisms. The common ancestors and closely related species of the organisms can be known by study the evolutionary relationship of the organism.
The DNA sequence and the amino acid sequence of gibbons, monkeys, and humans are quite similar with each other. The gibbons and humans have more then 99% DNA sequence similarity. The physical characteristics, cranial capacity and anatomical characteristics of the gibbons, monkeys, and humans are more or less similar with each other.
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Full Question ;
what other evidence would you use to analyze evolutionary relatedness among gibbons, monkeys, and humans?
What part of the neuron carries the action potential and is the main source of output?
A. axon
B. synapse
C. dendrites
D. nucleus
A neuron is prompted to transmit an impulse along its axon when this threshold is crossed; this impulse is known as an action potential. Thus, option A. Axon is the correct answer,
Information travels through the entire human body on neurons. They assist in coordinating all of life's crucial functions by using electrical and chemical signals. Neurons and describe how they function. In essence, both internal and exterior events are detected by our nerve systems, which then decide how to respond and change the state of our internal organs (such as changing our heart rate). Finally, they assist us in remembering and reflecting on what has happened. Utilizing neurons, a highly advanced network, it accomplishes this. The lengthy axon that extends from the soma carries information to neighboring cells. This represents the cell's "output". Several synapses attaching to the dendrites of additional neurons are how it usually ends.
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what will happen to the freshwater fish if you place it in sea water and why?
If a freshwater fish is placed in sea water, it will most likely die.
This is due to the sea water's much higher salinity than what freshwater fish are used to. Osmotic stress is brought on by this, and it can result in electrolyte imbalance, dehydration, and finally death.
Seawater normally has a salinity of 3.5% to 3.8%, whereas freshwater has a salinity of 0%. Since there is more salt in seawater than freshwater, the freshwater fish's cells osmotically lose water, contracting and changing form.
This process can produce an electrolyte imbalance, which can impair important processes like the fish's capacity to take oxygen from the water, ultimately resulting in death.
Further problems and even death may result from the freshwater fish's inability to expel waste due to the presence of salt in the sea water.
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what is the dominate hair color of the beefmaster?
Black, Brown, and Red are the three standard coat hues for cattle. They are brought on by a single set of genes that control the quantity (and colour) of pigment produced.
The black gene, which makes hair black, is more prevalent than the other two. Only red pigment is produced by the red gene, which is recessive to the other two genes. The brown gene, which is most likely the original, "wild" type hue, induces the development of both red and black pigment in variable degrees, producing a colour that ranges from red with some dark on the legs and head to virtually black. These nearly-black cattle typically have a brown or mealy muzzle.
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Why do sex-linked traits follow different patterns of inheritance than other
traits?
• A. Males only have one X chromosome.
B. Females only have one X chromosome.
• C. Males only carry recessive alleles.
D. Females only carry dominant alleles.
Genes on non-sex chromosomes (autosomes) inherit differently than X-linked genes, hence option A is correct.
What are sex-linked traits?One of the sex chromosomes, which are the X and Y chromosomes, is how sex-related disorders are inherited. That's because males and females have differing quantities of copies of these genes.
When one parent's faulty gene can cause an illness while the other parent's identical gene is normal, this is known as dominant inheritance.
Therefore, males only have one X chromosome, so sex-linked traits follow different patterns of inheritance than other traits.
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bones are classified by whether they are weight bearing or protective in function. true/false
Answer:
true
I hope it helps....
the arteries that anastomose and form the two arterial arches in the palm are the _____ and _____ arteries.
The radius and ulna, two bones that make up the forearm, are found on the thumb and pinky sides, respectively. One of the two arteries that continue the brachial artery is the radial artery; the other is the ulnar artery.
It nourishes the forearm's anterior compartment. The axillary artery splits into two branches, the radial and ulnar arteries, which act as the primary forearm perforators. The radius is shorter than the ulna and has a large distal end that joins with the carpal bones at the wrist. Its little proximal end joins with the humerus. The ulna's dimensions are reversed when compared to the radius because it has a large proximal end that articulates with the humerus and a tiny distal end. The forearm and hand can pronate and supinate according to the shape of the radius and ulna and the joints that connect them.
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lucose is often present in very low concentrations in environments populated by microorganisms. to import the maximum amount of available glucose, cells use:
Active transport in cellular biology is the movement of molecules or ions across a cell membrane against the concentration gradient from one area of lower concentration to another.
This movement necessitates active transport, which uses cellular energy. Adenosine triphosphate (ATP) is used in primary active transport, whereas an electrochemical gradient is used in secondary active transport.
Active transportation options include:
macrophage phagocytosis of bacteriaHeart muscle cells release calcium ions.White blood cell defence against invading illnesses; protein release from a variety of cells, including enzymes, peptide hormones, and antibodies; transportation of amino acids across the intestinal epithelium in the human intestine.Learn more about amino acids here:
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What does a clade consist of a common?
A clade is made up of all the descendants of a common ancestor.
What is a clade?A clade is a term used in biological classification to describe a group of organisms that includes a common ancestor and all of its descendants. The common ancestor is often referred to as the clade's "last universal common ancestor" (LUCA) and can be thought of as the point at which the lineage splits into two distinct groups. The descendants of the LUCA may have evolved different characteristics and adaptations over time, but they all share a common ancestry and are part of the same clade.
Clades are important for understanding the relationships between different groups of organisms and their evolutionary history. By grouping organisms based on their shared ancestry, researchers can better understand the patterns and processes of evolution and how different traits and characteristics have evolved over time.
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Explain why, in 2018, a scientist used the genetic engineering technique CRISPR to edit the genome of twin girls while they were still embryos, and why this became controversial around the world. Could the scientist have used other options to achieve the same outcome? If so, what are those options? If not, why not?
The discovery of the scientist bacame controvercial because it is against the law of China and it was causing more harm than benefits. No, he could not use other options to achive the same outcome.
What is CRISPR technique?This is a unique technology that helps the those people who are working in genetics and medical research to edit parts of the genome by adding or deleting the alterered sections of the DNA sequence.It is currently the simplest, most versatile method of genetic manipulation
A scientist says he created the first genetically edited babies using CRISPR to protect them from HIV infection. This discovery leads to a change in the world of genetics.
No, the scientist could not have to change the options for achieving the same outcome beacuse it will leads to the new discoveries of using the CRISPR gene for gene manipulation.
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which metabolic process happens in the chloroplast
Within developed chloroplasts, photosynthesis—the primary energy conversion process for plant metabolism—takes place.
What metabolic activity is connected to chloroplast?Chloroplasts perform photosynthesis during the day. NADPH and ATP, which are the immediate byproducts of photosynthesis, are used by photosynthetic cells to create a range of chemical compounds. The light reactions and the Calvin cycle, which employs carbon dioxide, are the two major sets of reactions that make up photosynthesis, the process of converting sunlight's energy into "food."
Photosynthesis is a type of metabolic process.Metabolic pathways can be loosely divided into two types based on their results. A "building up," or anabolic, mechanism is photosynthesis, which produces sugars from smaller molecules. Contrarily, cellular respiration reduces sugar into smaller molecules and is a process that a catabolic or "breaking down" route.
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Coat color in mice is incompletely dominant. Yellow (Y) and white (W) -colored mice are homozygous, while cream-colored mice are heterozygous (W). If two cream-colored mice mate, what percentage of each phenotype can we expect of their offspring? Show the Punnett Square.
The percentage of each phenotype can we expect of their offspring is
WC = Cream colored = 50%
WW = White = 25%
YY = Yellow = 25%
The punnett square is somewhat like this:
W Y
W WW WY
Y WY YY
What is a punnett square?
The Punnett square is described as a square diagram that is used to predict the genotypes of a particular cross or breeding experiment.
Referring back to the yellow and white mice being homozygous (two of the same traits) we can gather from the punnett square the ratios for both.
Because it is incomplete dominance we know that all the traits are of course dominant.
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A researcher identifies the nucleotide sequence AAC in a long strand of RNA that was just transcribed in the nucleus. In the genetic code, AAC codes for the amino acid asparagine. When that RNA leaves the nucleus and becomes involved in translation, will asparagine necessarily appear in the protein? Use specific content to support your argument.
According to the question, when that RNA leaves the nucleus and becomes involved in translation:
it is not necessary that asparagine will appear in the protein.
After being transcribed in the nucleus, the RNA is processed in the cytoplasm before being translated into a protein. Ribosomes commence the translation process by reading codons, or three-nucleotide sequences, and attaching the matching amino acid to the developing protein chain. The codon AAC only codes for asparagine when it is surrounded by other codons. If the codon AAC is part of a larger codon sequence that codes for another amino acid, the protein will contain that amino acid rather than asparagine. As a result, the codon AAC can be transcribed in the nucleus and subsequently translated into a protein that lacks asparagine.
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What are the 2 domains of Bacteria?
In the early stages in the history of life, the two prokaryote kingdoms, Bacteria and Archaea, separated from one another.
Bacteria come in a wide variety, from pathogens that cause disease to helpful photosynthesizers and symbionts.Prokaryotes are everywhere, yet they can be challenging to find, count, and categorise. Only a small portion of the prokaryotic species that are predicted to exist are represented by those that we currently understand.In fact, in the world of prokaryotes, the concept of a "species" itself becomes complex.The key prokaryotic groupings at first Then, we'll look at why it can be difficult to categorise and recognise them. Finally, we'll look at how DNA sequencing techniques are enabling us to understand the prokaryotes that surround us.
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which of the following statements is correct? prokaryotic cells and eukaryotic cells evolved at about the same time. prokaryotic cells evolved a lot earlier (over a billion years) than eukaryotic cells. eukaryotic cells evolved a lot earlier (over a billion years) than prokaryotic cells.
Prokaryotic cells evolved a lot earlier (over a billion years) than eukaryotic cells.
Prokaryotic cells, such as bacteria, are the simplest and most primitive type of cells. They first appeared on Earth around 3.5 billion years ago and have been highly successful, thriving in a wide range of environments. On the other hand, eukaryotic cells, which are more complex Prokaryotic cells and include all animal and plant cells, evolved around 2 billion years ago. The evolution of eukaryotic cells was a major event in the history of life, as it made possible the development of complex multicellular organisms. The presence of a nucleus and other membrane-bound organelles in eukaryotic cells allowed for the specialization of cellular functions, which was crucial for the evolution of higher life forms.
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Which description gives an example of acute exposure to a toxicant?
OA. A child experiences developmental delays from years of contact
with lead.
OB. A rescue worker experiences respiratory damage from smoke
inhalation at a fire.
C. A factory worker falls ill after repeated, very small doses of a
chemical product.
OD. A person develops lung cancer after a lifetime of smoking
cigarettes.
Answer:
C. A factory worker falls ill
Explanation:
Acute exposure is a short contact with a chemical. It may last a few seconds or a few hours. For example, it might take a few minutes to clean windows with ammonia, use nail polish remover or spray a can of paint. The fumes someone might inhale during these activities are examples of acute exposures.
Answer: b. A rescue worker experiences respiratory damage from smoke inhalation at a fire.
Explanation: just did it
In a short essay (100-150 words), discuss how the processes shown in Figure 15,2 are examples of feedback mechanisms regulating biological systems in bacterial cells
Figure 15.2 of bacterial cells illustrates two key processes, which are both examples of feedback mechanisms.
What is bacterial cell?A bacterial cell is a form of prokaryotic cell, which is a type of single-celled organism that lacks a nucleus and membrane-bound organelles. Bacterial cells have a cell wall composed of peptidoglycan, and a cell membrane made of phospholipids and proteins.
The first is the release of end-products, which signals the end of a metabolic pathway and serves as a feedback signal to the cell to stop further production of the product. The second is the inhibition of enzyme production, which prevents the cell from overproducing enzymes and therefore prevents the cell from consuming excessive amounts of energy. Both of these processes act as regulatory mechanisms that keep the cell in balance and ensure its survival. Ultimately, these feedback mechanisms help to maintain the cell's homeostasis, or internal balance.
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what of these dinosaurs is classified as a carnivore?
The Dilophosaurus dinosaur is classified as a carnivore.
What is a Dilophosaurus?Dilophosaurus is a species of large carnivorous dinosaur that lived approximately 193 to 183 million years ago during the early Jurassic period. It was one of the first large predatory dinosaurs, and its fossils have been found in North America.
The Dilophosaurus was a bipedal dinosaur, and it had two large, bony crests on its skull that were used for display or to make it look larger. It was estimated to be around 20 feet long and had sharp teeth, indicating that it was a carnivore.
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The complete question is:
What of these dinosaurs is classified as a carnivore?
Triceratops | Tylosaurus · Iguanodon | Archaeopteryx · Alamosaurus | Mosasaurus · Coelophysis | Ankylosaurus · Brontosaurus | Dilophosaurus.
All of the dinosaurs listed except for option C. Archaeopteryx are classified as carnivores.
What nature of animals are dinosaurs?Albertosaurus, Allosaurus, Baryonyx, Carnotaurus, Giganotosaurus, Mapusaurus, Mosasaurus, Spinosaurus, Tylosaurus, and Tyrannosaurus Rex are all predatory dinosaurs that lived during the Mesozoic Era and are known to have been carnivores.
Velociraptor, while a small dinosaur, is also considered a carnivore, with evidence suggesting that it may have been a pack hunter that preyed upon small dinosaurs and other animals.
Archaeopteryx, on the other hand, is a more primitive dinosaur that lived during the Late Jurassic period and is considered to be a transition between reptiles and birds. While it is not considered a dinosaur, it is widely recognized as the earliest known bird and is believed to have been primarily a herbivore or omnivore, not a carnivore.
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The complete question goes thus:
what of these dinosaurs is classified as a carnivore?
Albertosaurus
Allosaurus
Archaeopteryx
Baryonyx
You examine a tissue sample under the microscope and discover that the tissue appears to be striated muscle. what can be concluded from this observation?
If a tissue has a striated appearance, it is likely made up of long, cylindrical cells with many nuclei and has a distinctive pattern of alternate light and dark bands, or striations, running the length of it.
Striated muscleThis kind of muscle tissue, often referred to as skeletal muscle or voluntary muscle, is in charge of the body's movement as well as the preservation of posture and the production of heat.This means that if a tissue sample resembles striated muscle, it was probably produced from an animal or human's skeletal muscle. This discovery offers important data for the identification and categorization of the tissue, information that can be applied to areas like anatomy, physiology,Several places where striated muscle can be found are as follows:
Striated muscle, which is present throughout the arms and legs and is responsible for limb movement.Back: Strong back muscles are essential for supporting the spine and preserving proper posture.The striated muscles of the abdomen are crucial for breathing as well as core strength and stability.Face: Facial emotions like a smile or a frown are produced by the striated muscles of the face.Speech and swallowing are controlled by striated muscles in the tongue and throat.learn more about striated muscle here
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What structures are similar in appearance but not in structure?
Analogous structures are those found in similar ways in unrelated animals. These structures are analogous because they serve the same purpose rather than because they have a common ancestor.
What structure, though similar in structure, serves a different purpose?Serial homologous refers to a situation where two or more organs or structures are substantially the same in terms of construction but have been altered to serve distinct purposes. Bat wings and whale flippers are two examples of this.
What do structures that differ in appearance but are related in origin mean?Homologous structures are those with the same evolutionary ancestry, despite the fact that they will ultimately have different structural roles or different physical characteristics.
As opposed to sharing a common evolutionary origin, analogous structures are features or structures that are comparable in two separate species. In other words, despite the structures' distinct evolution, they are comparable due to similar selective forces.
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. explain how a change in nucleic acids (dna) can cause a change in carbohydrates or lipids in the body of an organism following the central dogma. (5)
According to the Central Dogma, RNA is the next step in the translation of genetic information from DNA into proteins.
Thus, any change in nucleic acid (DNA) can result in a change in the proteins generated, which can then result in a change in the carbohydrates or lipids in an organism's body.
This is owing to the fact that proteins are in charge of carbohydrate and lipid synthesis, and any change in the main structure of the protein created as a result of a change in the nucleic acid may cause the protein to operate differently, resulting in changes in the total quantities and kinds of carbs or lipids produced.
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the outer portion of the pericardium is a tough, dense connective tissue layer called the ______ pericardium.-fibrous-epicardium-parietal-visceral
The outer portion of the pericardium is a tough, dense connective tissue layer called the fibrous pericardium.
The heart and the roots of the major vessels are contained within the pericardium, commonly known as the pericardial sac. It consists of two layers: a serous membrane-covered inner layer and a fibrous pericardium-covered outer layer (serous pericardium). It defines the middle mediastinum and encloses the pericardial cavity, which is filled with pericardial fluid. It keeps the heart free from interference from other organs, shields it from infection and stress, and lubricates the beats of the heart.
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what is the mostly phylogenetic tree based on these shared derived characters? When did these characters appear during the aliens'evolutionary history? Drag the lens and shared derived characters to their appropriate locations on this phylogenetic tree.
A derived feature is one that emerged in the lineage before a clade and distinguishes members of that clade from other people, whereas a shared character is one that two lineages share in phylogenetic tree.
How does a phylogenetic tree work?Understanding a phylogeny is analogous to reading a family tree. The root of the tree represents the lineage of the ancestors, while the points of the branches represent their descendants. By moving from the root to the tips, you advance through time. A lineage splitting (speciation) is shown as branching on a phylogeny. When a speciation event occurs, a single ancestral lineage produces two or more daughter lineages. A clade is a grouping of all current and extinct individuals of a lineage who descend from the same ancestor. A phylogeny makes it easy to establish whether a group of lineages is a clade. The phylogeny might be simplified by deleting just one branch, where the severed branch now contains a clade.
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while looking at slides of brain tissue in a physiology class, a student sees groups of damaged neurons that have collected around a core of protein. what is the student looking at?
In a physiology class using slides of brain tissue, a student notices clusters of injured neurons that have gathered around a protein core. The pupil viewing is brain infarct or cerebral infarct
The student is likely looking at a slide of brain tissue from a person who had a stroke. The groups of damaged neurons that have collected around a core of protein are known as a "brain infarct" or "cerebral infarct" and are a common feature of strokes.
Strokes occur when blood flow to a part of the brain is disrupted, either by a blood clot or a ruptured blood vessel. This lack of blood flow deprives the affected brain tissue of oxygen and nutrients, leading to cell death and tissue damage.
The core of protein that the student observed is likely the result of the breakdown and accumulation of cellular debris and dead neurons in the affected area. This can cause the tissue to become swollen and inflamed, leading to further damage and dysfunction.
Strokes can have a wide range of symptoms, depending on the location and severity of the infarct. Common symptoms include weakness or paralysis on one side of the body, difficulty speaking or understanding language, vision problems, and cognitive impairment. Treatment typically involves addressing the underlying cause of the stroke, such as blood clot removal or blood pressure management, as well as rehabilitation to help patients regain lost function and prevent future strokes.
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what is the name of the structure located inside the cochlea that contains auditory receptors?
The Organ of Corti, which is part of the cochlea, is an inner ear structure that aids in hearing. The Organ of Corti is made up of three rows of outer hair cells and one row of inner hair cells.
What do we mean by auditory receptors?A mechanoreceptor cell found in the inner ear that responds to auditory stimuli. The arrangement of the accessory sensory structures ensures that the movement of the hair-like projections (stereocilia and kinocilia), which transmit information to the central processing unit of the nervous system, is triggered by the appropriate stimuli. The Organ of Corti, a sensory receptor located inside the cochlea, contains nerve receptors for hearing in sensory cells with hair-like structures (hair cells). The cochlea contains two fluids (endolymph and perilymph).
The Organ of Corti of the cochlea is a sensory organ that houses the hair cells that serve as nerve receptors for hearing.
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18. In pea plants, round peas are dominant to wrinkled peas. Complete the cross Rrx
Rr. What percentage of the offspring would you expect be round?
A) 25%
B) 50%
C) 75%
D) 100%
Round peas outnumber wrinkled peas in pea plants. 50% of the offspring following the cross Rrx completion should be spherical.
option B
50% of the F1 generation's progeny had wrinkled seeds. Heterozygous (Rr) round seeds plants will result from a cross between homozygous round seeds plants (RR) and homozygous wrinkled seeds plants (RR) as F1 generation. Round seeds are a dominant characteristic in pea plants, whereas wrinkled seeds are a recessive trait. For the pea plant's seed form in this instance, "R" is the dominant allele and "r" is the recessive allele. The seed bearing plant would have genotype RR. The plant with genotype rr would thus produce seeds that were wrinkled.
As a result, if the outcome is entirely tall plants, the parent's genotype will be homozygous dominant (TT), and if it is 50% tall and 50% dwarf, the parent's genotype will be heterozygous.
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which structure is highlighted left anterior descending artery circumflex artery left coronary artery right marginal artery right coronary artery
artery on the left side. A branch of the left circumflex artery, it can be discovered at the left AV sulcus. It heads for the top of the heart. the artery on the left that descends anteriorly.
Branches emerge from the left major coronary: The left coronary artery divides into the left anterior descending artery, which provides blood to the front of the left side of the heart. The left coronary artery's left circumflex branch surrounds the heart muscle. Your left main coronary artery has two branches, the left anterior descending (LAD) artery being one of them. Anterior refers to an artery that feeds blood to your heart's front chambers. It is your heart's main source of oxygenated blood for the lower left ventricle, which pumps blood throughout your body.The left major coronary artery and the right coronary artery (RCA) are the two primary coronary arteries (LMCA). The aorta's root is the source of both of them. The right atrium and right ventricle are the primary recipients of blood from the RCA, which exits the anterior ascending aorta.
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what will happen to the freshwater fish if you place it in sea water?
Due to the difference in salinity and osmotic pressure, freshwater fish will probably perish if placed in sea water. Large African lakes are home to the bulk of species.
A freshwater fish may face a variety of physiological and osmotic stresses in saltwater or seawater that might be detrimental or even lethal. Freshwater fish have evolved to be able to retain a higher concentration of salts and other solutes in their bodies than the water around them, allowing them to survive in habitats with lower salt concentrations than saltwater. In seawater, the fish may lose water and take in too much salt, which can cause electrolyte imbalances, dehydration, and other problems that may finally result in death. As a result, it's crucial to make sure fish are exclusively kept in settings that mimic their natural habitat.
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what would happen to the panther species as a whole if black color was an advantage for survival?
The ability to conceal from their prey at night thanks to the dark, black fur of the black panther species is advantageous for survival.
What adaptations do cats have that help them survive?These big cats are incredibly agile and are able to travel stealthily through a forest, climb trees, and easily descend a mountainside. As a jumping adaptation, their hind limbs are longer than their forelimbs.
Why are all cats black?Recessive and dominant alleles, respectively, are thought to be responsible for leopards' and jaguars' black coat colouring. A specific set of alleles induces the creation of a lot of the dark pigment melanin in the skin and fur of each species.
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