Answer:
Genes code for proteins that determine an organism's traits.
Explanation:
Geneis the basic physical and functional unit of heredity.Some genes act as instructions to make molecules called proteinsDNA contains the genetic information necessary for the structure and function of living beings.Chromosomes are composed of a DNA molecule, whose segments form the genes that contain specific base sequences to determine a trait.
***100 points***
The spores of a fern
grow...
A. on the rhizomes underground.
B. on the underside of the fronds.
C. on the cones they produce.
D. on the stem of the plant.
Answer:
B
This is because when these germinate they grow into small hearted plants grow Prothalli
What makes a good scientific question is that it can be answered by direct observations or with scientific tools?.
A good scientific question must be measurable and objective. A scientific inquiry shouldn't be so open-ended that there are several variables and potential solutions. Scientific problems with a clear independent and dependent variable tend to be simpler to comprehend than those with a hazy definition.
A study employing observation, scientific instruments, or computer simulations should be able to help answer the questions because scientific inquiries should be observable and controllable. Empirical data obtained during a research, experimental, or technical process is used to support scientific conclusions. Scientific inquiries must be testable, which requires that they focus on particular things, creatures, or occurrences in the real world and can be resolved through experimentation by collecting and evaluating data.
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One reason cells divide is that: OA. cells must increase their volume. O B. organisms must replace damaged cells. QC. cells must decrease their surface area. OD. organisms must stop the cell cycle. sUBMIT
Answer:
B. Organisms must replace damaged cells.
Explanation:
If the human pancrea i not functional,
Name the hormone which i deficient
Name the dieae
Diabetes is a disease that people are likely to develop as a result of low insulin levels.
Which hormone is in charge of the pancreas?The primary hormones secreted by the endocrine gland in the pancreas are somatostatin, which inhibits the production of glucagon and insulin, and insulin and glucagon, which regulate the amount of glucose in the blood.
The pancreas secretes two main hormones, what are they?In addition to glucagon, which raises blood sugar, the pancreas also produces insulin, which lowers blood sugar. The effective operation of important organs, such as the brain, liver, and kidneys, depends on maintaining healthy blood sugar levels.
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Question:-
If the human pancrease is not functional
i]name the hormone which will be deficient
ii]name the disease the human is likely to suffer from
How does the RNA produced in the laboratory?.
One of life's fundamental qualities is the ability to reproduce itself. Scientists have already created the first molecules of ribonucleic acid, a single-stranded relative of deoxyribose nucleic acid that is capable of replicating virtually any other RNA.
In 1993, researchers created the RNAP ribozyme, also known as an all-RNA variant of RNAP. On a separate template strand, it joined two short RNA strands. The problem with all of these RNAP ribozymes is that they can only replicate specific nucleotide base sequences—the building blocks of RNA and DNA—and that these sequences are of no real biological significance in living cells. Joyce and his colleague first produced a vast library of DNA strands to encode the prototype RNAP ribozyme. The DNA sequence was modified at random to guarantee that each final RNAP was distinct. These RNAPs were contained in a vial along with several short RNA fragments that the researchers planned to assemble on another template strand. The new strand would bind to a specific molecular target in its vial as evidence that the RNAP ribozyme produced the new RNA successfully. Every RNAP ribozyme was created to stay connected to its particular, generated RNA strand, allowing the researchers to track any accomplishments. With each RNAP ribozyme that was caught, a fresh round of evolution was then initiated. An RNAP ribozyme known as 24-3 polymerase, which was developed in 24-round test tubes, is the current product. Throughout this process, the requirements for a useful RNAP ribozyme grew. By duplicating RNAs that have previously been duplicated, the 24-3 polymerase can boost the abundance of some RNAs 10,000-fold. This led to the creation of the first RNA version of the widely used polymerase chain reaction, which copies DNA.
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which property of water allows nutrients to be small enough to enter the plant in this way?
The property of water that allows nutrients to be small enough to enter the plant in this way is its polarity.
Water is a polar molecule, meaning that it has a partial positive charge on one side of the molecule and a partial negative charge on the other side.
This polarity allows water to form hydrogen bonds with other polar molecules, such as the nutrients that plants need to survive.
The small size of many nutrient molecules, such as ions and small organic molecules, allows them to interact with the polar water molecules and be transported across the cell membrane and throughout the plant.
These nutrients can dissolve in the water, which is able to penetrate the plant cells. The high surface tension and cohesive properties of water also help to move these dissolved nutrients through the plant's system, including the xylem and phloem, which transport water and nutrients throughout the plant.
It's worth noting that the water's polarity also allows it to dissolve many other types of molecules, such as gases and dissolved minerals, which play an important role in many biological processes.
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the ability to perform with strength at a rapid pace
This ability is known as power endurance or muscular endurance.
What do you mean by endurance?
Endurance is basically the ability to withstand hardship or adversity. It is a measure of a person's physical and mental strength and the capacity to sustain effort and remain resilient in the face of difficulty. Endurance is an essential component of success in sports, work, and life.
Power endurance is the ability to perform a given task with strength and speed for an extended period of time. It requires the body to be able to sustain a high level of muscular output for a given duration. Examples of activities that require power endurance are running, swimming, cycling, and circuit training.
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Which of thee et of eukaryote would contain the greatet amount of diverity and variation?
a. Eukaryote in the ame kingdom
b. Eukaryote in the ame cla
c. Eukaryote in the ame family
d. Eukaryote in the ame pecie
The most diversity and variation would be found in eukaryotes of the same species.
There can be a vast variety of genetic diversity and physical feature variation within a single species. Individuals within the same species may differ in terms of their size, shape, color, and behavior, for instance.
As we advance up the classification system, the diversity and variance get less and less when we compare different levels of the classification, such as kingdom, class, or family. This is due to the fact that species at higher levels have evolved differently and have less in common with one another.
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The set of eukaryotes in the same species would contain the greatest amount of diversity and variation. So the correct option is d.
Species is the most specific taxonomic category among the options given (kingdom, class, family, and species). Organisms within the same species share a high degree of genetic similarity but can still exhibit considerable diversity and variation. This diversity can arise through various mechanisms such as genetic mutations, genetic recombination, and environmental factors. Different individuals within a species can possess different traits, variations in gene expression, or variations in their genetic makeup, contributing to overall diversity within the species.
Among the given options, eukaryotes in the same species would contain the greatest amount of diversity and variation. While organisms within a species share genetic similarities, they can still exhibit variations in traits, gene expression, and genetic makeup, contributing to overall diversity.
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explain the difference between how autotrophs and heterotrophs acquire energy
Autotrophs are organisms that are able to produce their own food through photosynthesis or chemosynthesis. They use energy from the sun or inorganic molecules to convert carbon dioxide and water into glucose and oxygen, respectively. This process is called photosynthesis in plants and algae, and chemosynthesis in certain bacteria.
Heterotrophs, on the other hand, are organisms that cannot produce their own food and must obtain energy by consuming other organisms. This can be done through absorption, ingestion, or inhalation. Heterotrophs obtain energy by breaking down organic molecules that are produced by autotrophs or other heterotrophs.
How do autotrophic organisms obtain energy differently than heterotrophic organisms?Autotrophic organisms obtain energy by using energy from sources such as the sun or inorganic molecules to convert simple compounds into more complex ones, through processes such as photosynthesis or chemosynthesis. Heterotrophic organisms, on the other hand, obtain energy by consuming other organisms and breaking down their organic compounds for energy.
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What is the primary factor that determines each cell's sensitivity to hormones?
The primary factor that determines a cell's sensitivity to hormones is the presence and number of receptors for that hormone on the cell surface.
Hormones bind to specific receptors on the surface of target cells, and this binding triggers a response. The number and type of receptors on the cell surface determine the cell's sensitivity to a particular hormone. For example, a cell with a high number of receptors for a particular hormone will be more sensitive to that hormone than a cell with fewer receptors.
Receptor density and distribution can vary between different cell types and can change in response to different physiological conditions. For example, the number of receptors for a particular hormone may increase or decrease in response to changes in hormone levels or in response to other environmental factors.
The receptors for the hormone can also be inactivated or degraded by enzymes or other molecules, or may be internalized by the cell, resulting in a decrease of the receptors available on the cell surface and therefore decrease the cell's sensitivity to a hormone.
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What part of the nervous system contains the brain and spinal cord; processes, stores and responds to information from the peripheral nervous system?
The part of the nervous system contains the brain and spinal cord; processes, stores and responds to information from the peripheral nervous system is the central nervous system.
The nervous system includes the brаin, spinаl cord, аnd а complex network of nerves. This system sends messаges bаck аnd forth between the brаin аnd the body. The brаin is whаt controls аll the body's functions. The spinаl cord runs from the brаin down through the bаck. It contаins threаdlike nerves thаt brаnch out to every orgаn аnd body pаrt. This network of nerves relаys messаges bаck аnd forth from the brаin to different pаrts of the body.
The nervous system is mаde up of the centrаl nervous system аnd the peripherаl nervous system:
The centrаl nervous system includes the brаin аnd spinаl cord.The peripherаl nervous system includes the nerves thаt run throughout the whole body.For more information about the nervous system refers to the link:
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Read works The Eco Pyramid
The link between various organisms in an ecosystem is depicted graphically by an ecological pyramid. It displays the movement of energy throughout the various trophic levels of an ecosystem.
What constitutes an eco pyramid's four trophic levels?Three or four trophic levels make up the majority of food chains. Typical sequences include plant, herbivore, carnivore, and top carnivore; alternatively, plant, herbivore, parasite of the herbivore, and parasite of the parasite may be used.
How do ecological pyramids function?Various trophic levels are followed by producers at the base of ecological pyramids (such as herbivores that eat plants, then carnivores that eat flesh, then omnivores that eat both plants and flesh, and so on). The top of the food chain is the most elevated position.
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Where do fireflies get the energy storage molecules they need to do the activities required for reproduction?.
In living things, ATP is used to store mechanical energy. In the lantern of a firefly, unique cells create an enzyme that starts the chemical reaction that converts energy into light.
What are the components of energy storage molecules?Lipids, proteins, carbohydrates, and nucleic acids are the three different types of molecules that store energy. There are two primary energy storage systems used by organisms. Co-chemical bonds are a method of energy storage in energy-rich compounds like glycogen and triglycerides.
How does the ATP energy of fireflies produce light?Perhaps the most well-known application of bioluminescence is the process through which fireflies emit light. Light is created when oxygen, calcium, adenosine triphosphate (ATP), and the chemical luciferin mix with one another in the presence of the bioluminescent enzyme luciferase.
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What is an Example of Structural Adaptation for Reproduction with Plants?
Flexible Stems
Spines Development
Deep Root Systems
Ballistic Seed-Dispersal
Answer:
An example of structural adaptation for reproduction with plants is c. Deep root systems.
Deep root systems are a structural adaptation that allows plants to access water and nutrients from deeper layers of soil, increasing their chances of survival in dry or nutrient-poor environments. These deep roots also allow the plant to establish itself firmly in the soil, increasing its chances of reproducing successfully.
Option a. Flexible stems, b. Spines development and d. Ballistic seed-dispersal are not structural adaptations related to reproduction, but other strategies that plants use to survive in different environments. Flexible stems allow plants to bend and sway in the wind without breaking, spines development protect plants from herbivores and Ballistic seed-dispersal is a way for plants to scatter their seeds away from the parent plant.
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what process allows a stomach cell and a skin cell to have specialized functions?
The process known as differentiation allows a a skin cell and a stomach cell have specialized functions.
Differentiation is a very crucial process by which the human body produces specialized cells from unspecialized cells which are required for performing different purposes. This is very important as it allows the cells to perform their respective specialized functions according to the requirement of the body.
For example, the cells of the skin protect the body and help it regulate temperature whereas the cells present in the stomach aid in the digestion of food. They're both cells of the body but they perform very different and specific location depending on their location and requirement.
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2. A mutation that is beneficial to the organism.
does not change the genotype
harms the organism
results in higher performance
is not noticeable
Positive mutations They result in novel protein variants that aid organisms in adjusting to environmental changes .In order for evolution to occur, beneficial mutations are required. They presumably will spread more widely as a result of the increased likelihood of an organism surviving or reproducing they provide.
Does an organism benefit or suffer harm from a mutation?The effects of mutation could be positive, negative, or neutral depending on the circumstance or region. Most non neutral mutations are detrimental. The impact of a mutant and the possibility that it will be damaging rise normally with the quantity of base pairs that are altered.
What kinds of mutations are beneficial?Several beneficial human mutations include the following Mutations guarding blood arteries against the dangerous fatty buildup called atherosclerosis in humans It has been demonstrated that genetic variations in red blood cells can provide up to 40% more protection against a dangerous form of malaria.
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Which part of a nucleotide is responsible for the genetic " code ? "
The part of the nucleotide that is responsible for the genetic code is Nitrogen base.
A nucleotide is referred as the basic structural unit and building block for DNA. These building blocks are held together to form a chain of DNA. A nucleotide is basically composed of 3 parts:
five-sided sugar phosphate groupnitrogenous baseA nucleotide is the basic building block of nucleic acids such as RNA and DNA. It consists of a sugar molecule either ribose in RNA or deoxyribose in DNA which is attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are four types that are adenine (A), cytosine (C), guanine (G) and thymine (T). In RNA, instead of thymine the base uracil (U) takes place. DNA and RNA both molecules are polymers made up of long chains of nucleotides. The sequence of these bases in DNA or RNA determines the genetic information contained in the molecule.
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What was the most significant conclusion that Mendel drew from his experiment?.
The most important finding from Mendel's experiment is that traits are inherited as discrete units and not as a result of "blending."
He came to the conclusion that genes are transmitted in pairs and are inherited from each parent as separate entities. Mendel monitored the parental genes' segregation and the presence of dominant or recessive features in the children. He was aware of the numerical patterns that were passed down from one generation to the next.
Mendel created three inheritance laws that detailed the transmission of genetic features through pea plant breeding, long before anybody understood the existence of genes. Mendel's discovery considerably increased our knowledge of how genes are passed down and sparked the invention of fresh experimental techniques.
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What is the process of leaves changing color called?.
Photoperiodism refers to changes in leaf color. Autumn leaves change color as the pigment levels in the leaves change as they prepare to fall from the trees.
All leaves gradually lose chlorophyll during the growing season, and this loss accelerates before leaf fall. Under ideal conditions, this chlorophyll loss process is very orderly, allowing plants to resorb a large portion of the nitrogen in the pigment molecule structure. Carotenoid pigments are also lost as plastids age, but some are retained after the chlorophyll is removed, resulting in yellow autumn leaves. In rare cases, such as when winterberry holly leaves fall, a significant amount of chlorophyll remains in the leaves. The combination of chlorophyll and carotenoids results in pale green or yellow-green leaves.
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Photosynthesis refers to change in leaves color.
The production of sugars in the leaves depends on sunlight. In bright light, the sugars trapped in the leaves form the red pigments called anthocyanins. More light means high production of anthocyanins and brighter the color of leaves.
As chlorophyll pigment in the leaves breaks down, yellow pigments in leaves become visible. As the day get short and cold in the autumn, chlorophyll molecules breaks down and leaves appear yellow in color.
As photosynthesis depends on sunlight, change in the leaves color is also refer to the photoperiodism.
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Which of the following best describes a product of cellular respiration that provides energy for a cell?
Answer:
Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.
Explanation:
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Does primary active transport require a protein in the lipid bilayer?
The answer "Does primary active transport require a protein in the lipid bilayer?" is "Yes, primary active transport requires a protein in the lipid bilayer".
The cell membrаne is аn extremely pliаble structure composed primаrily of two lаyers of phospholipids (а "bilаyer"). Cholesterol аnd vаrious proteins аre аlso embedded within the membrаne giving the membrаne а vаriety of functions.
For аll of the trаnsport method, the cell expends no energy. Membrаne proteins thаt аid in the pаssive trаnsport of substаnces do so without the use of АTP. During primаry аctive trаnsport, АTP is required to move а substаnce аcross а membrаne, with the help of membrаne protein, аnd аgаinst its concentrаtion grаdient.
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what part of the nervous system contains the brain and spinal cord; processes, stores and responds to information from the peripheral nervous system
The brain and spinal cord make up the central nervous system.
All of the body's components are connected by nerves that emerge from the spinal cord and make up the peripheral nervous system. The nerve cell, or neuron, is the building block of the neurological system. There are around 100 billion neurons in the human brain.
A neuron has a cell body, which contains the cell nucleus, as well as distinct extensions known as axons and dendrites (pronounced AK-sonz) (pronounced DEN-drahytz). Nerves are collections of axons that are present throughout the body. Neurons can communicate even across great distances because of their axons and dendrites.
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in which condition does the body turn against itself and mistakenly attack normal cells?
How long does it take blood to circulate your entire body before returning to the heart?
Blood circulates from the heart, all the way around the body, and back to the heart in roughly 45 seconds on average. The average adult's heart beats over 100,000 times every day.
Blood circulation:
To get oxygen, the circulatory system (cardiovascular system) transfers blood from the heart to the lungs. The heart then delivers oxygenated blood to the rest of the body via arteries. The veins return oxygen-depleted blood to the heart to restart the circulation process.
The circulatory system's job is to transport blood throughout the body. This circulation of blood keeps your organs, muscles, and tissues healthy and working to keep you alive.
The circulatory system also assists your body in eliminating waste. This garbage consists of the following items:
Carbon dioxide produced by respiration (breathing).Chemical byproducts of your organs.Waste from foods and beverages.Therefore, 45 sec are taken for complete blood flow.
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Explain why the allantois and yolk sac are non-functional in a human foetus.
Answer: it is not functional in human
Explanation: The yolk sac is not functional in humans, but remains as a vestige reflecting our evolution from ancestral reptiles that relied on stored yolk for embryonic nutrition. Most mammalian eggs have little or no yolk, and nutrients are instead transferred from maternal to embryonic circulation via the placenta.
Occurs when a scar is not strong enough to prevent the reopening of a wound, called?
An outwardly or internally reopened surgical scar is known as wound dehiscence. It is sometimes referred to as dehiscence.
A surgical complication called wound dehiscence occurs when an incision, or cut made during surgery, reopens. It is also known as wound separation, wound breakdown, and wound disruption. The margins of an incision have peeled apart in one or even more small spots, which is referred to as partial dehiscence. Dehiscence is a side effect of suture failure, tension-induced shear stresses, or fascial necrosis due to infection and/or ischemic (2). Evisceration is the uncontrollable exteriorization of internal organ contents through a surgical scar that has broken open outside the abdominal cavity. Numerous factors, including ageing, diabetes, infections, obesity, smoking, and poor nutrition, can contribute to wound dehiscence.
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Who among the given scientist developed the theory of evolution by natural selection *?.
Charles Darwin and Alfred Russel Wallace developed the theory of evolution by natural selection.
Key points:
Charles Darwin and Alfred Russel Wallace independently developed the theory of evolution by natural selection in the mid-19th century.Darwin's theory was first presented in his 1859 book "On the Origin of Species" and Wallace's ideas were presented in a joint paper read at a meeting of the Linnean Society in London in 1858.The theory of evolution by natural selection states that species change over time through the process of natural selection, where organisms with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring.This process leads to the gradual adaptation of populations to their environment over many generations.The theory of evolution by natural selection is considered one of the most important scientific theories of all time, as it provides a framework for understanding the diversity of life on Earth and how it has changed over time.Learn more about the natural selection here:
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in an individual that is heterozygous for a particular trait, expression of the recessive allele is masked. True/False ?
True , in an individual that is heterozygous for a particular trait, expression of the recessive allele is masked.
In general , an organism is homozygous dominant, if it contains two copies of the same dominant allele, or homozygous recessive, if it contain two copies of the same recessive allele. on the other hand Heterozygous means that an organism is having two different alleles of a gene. so If we have alleles that is heterozygous recessive, these allele would be recessive and will not express itself. The person will only carry the allele.
When the alleles are heterozygous dominant, these allele would be dominant. and when a person is heterozygous for a specific gene, it means he is having two different versions of that gene.
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an athlete is training for a marathon, which hormone do you think may help in enhancing the performance in the competition?
cytokines interferons erythropoietin thrombopoletin
Erythropoietin may help in enhancing the performance in the competition
What is Erythropoietin ?The peritubular kidney cells spontaneously generate the glycoprotein hormone erythropoietin (EPO), which promotes the generation of red blood cells. EPO is primarily produced by peritubular cells in the renal cortex. EPO production is governed directly by PO2. The generation of EPO increases when pO2 decreases.
Erythropoietin (Epo), which is produced by the liver in the foetus and by the kidney in adults, promotes the survival of erythroid progenitor cells while also promoting differentiation and proliferation of these cells by binding to Epo receptors (EpoR).
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the cell fragments that are a component of blood are?
The cell fragments that are a component of blood are platelets.
Blood is а fluid thаt moves through the vessels of а circulаtory system. In humаns, it includes plаsmа (the liquid portion), blood cells (which come in both red аnd white vаrieties), аnd cell frаgments cаlled plаtelets.
Plаsmа is the mаin component of blood аnd consists mostly of wаter, with proteins, ions, nutrients, аnd wаstes mixed in.Red blood cells аre responsible for cаrrying oxygen аnd cаrbon dioxide.Plаtelets аre responsible for blood clotting. Thrombocytes, or plаtelets, аre not complete cells, but аre smаll frаgments of very lаrge cells cаlled megаkаryocytes. Megаkаryocytes develop from hemocytoblаsts in the red bone mаrrow.White blood cells аre pаrt of the immune system аnd function in the immune response.For more information about the components of blood refer to the link:
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