The respiratory and digestive systems both depend on the pharynx. It enables the passage of breathed air from the nasal cavity to the lungs, larynx, and trachea. The epiglottis is located in a region of the pharynx known as the nasopharynx.
The respiratory system not only aids in breathing, but also guards against the ingestion of dangerous particles through eating, sneezing, or coughing. The pharynx, also known as the throat, is a flexible muscular tube with a funnel-like form that carries air from the mouth and nose to the trachea, also known as the windpipe. Additionally, it links the esophagus and larynx to the nasal and oral canals.
The respiratory and digestive systems depend on the pharynx. It enables the passage of breathed air from the nasal cavity to the lungs, larynx, and trachea.
The epiglottis is located in a region of the pharynx known as the nasopharynx. By keeping the esophageal opening covered, the air is kept out of the digestive system.
The complete question is:
What part of the body help the digestive system and respiratory system works together?
a. Lungs
b. Nose
c. Trachea
d. Pharynx
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A pharmaceutical company has developed a drug that is able to combat certain viruses. It’s effective on viruses that can cause the flu, rabies, and chicken pox. What must be true of the pharmaceutical company’s new drug?
It attacks bacteriophages.
It attacks spherical viruses.
It attacks the viral envelope.
It attacks the viral cytoplasm.
Option B. It attacks spherical viruses. must be true of the pharmaceutical company’s new drug.
Viruses reason acquainted with infectious diseases together with the commonplace bloodless, flu, and warts. in addition, they cause excessive ailments consisting of HIV/AIDS, Ebola, and COVID-19. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce different viruses like themselves.
Capsules intrude with the way neurons send, get hold of, and procedure indicators via neurotransmitters. a few tablets, such as marijuana and heroin, can set off neurons because their chemical shape mimics that of a herbal neurotransmitter inside the body. This permits the medication to connect to and prompt the neurons.
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How do phospholipids of a plasma membrane regulate the movement of large or polar molecules.
The hydrophobic tails of phospholipids prohibit polar molecules and ions from diffusing in and out, acting as a semipermeable barrier. Generally speaking, carrier proteins and channel proteins are the two groups of proteins that mediate facilitated diffusion.
Within the bilayer, plasma membrane phospholipids can migrate. Membranes change from a fluid to a solid state as the temperature decreases. The fluidity of the membrane is affected differently by cholesterol, a steroid. The transport of phospholipids is slowed down at warm temperatures by it. Thus, polar and charged molecules including ions, nucleosides, amino acids, and carbohydrates can pass across the plasma membrane due to facilitated diffusion.
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Which property of fossils allows scientists to determine the relative ages of rock layers?.
The property of fossils which allows scientists to determine the relative ages of rock layers is termed as Index fossils.
Index fossils are helpful because they can be used to determine the relative ages of the rock layers in which they are found.
What is index fossils?
Periods of geological time are identified using index fossils. These fossils are "frequently encountered, widely distributed fossils that are restricted in time span," according to the definition. If an index fossil is discovered in a particular layer, one can estimate the layer's age.
Index fossils are fossils used to describe and classify geologic periods, often known as guide fossils or indicator fossils (or faunal stages).
Therefore, The property of fossils which allows scientists to determine the relative ages of rock layers is termed as Index fossils.
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Science
Recom
Seventh grade > Q.4 Genetic variation in sexual reproduction JSA
Which of the following statements are true about sexual reproduction? Select all that apply.
Organisms that have the same phenotype for a trait could have different
genotypes for the gene that controls that trait.
When mammals mate and produce offspring, each parent passes down all
of its alleles to each of its offspring.
Two siblings can have different phenotypes for some traits because each
sibling may inherit different alleles from the parents.
Some of an offspring's traits are different from the traits of either of its
parents because the offspring inherits alleles from both parents.
Submit
9
A
Genetic features can be influenced by a person's environment, including sickness and disease, radiation, food, and other things.
The dna and genes from one's parents can also be used to determine genetic features, but these qualities can also evolve with time.
What is Genetic variation ?The difference in DNA between individuals or communities is known as genetic variation. Mutation and genetic recombination are two of the many processes that cause genetic variation. Genetic variety is primarily caused by mutations, although it is also influenced by other processes including genetic drift.
What is Sexual reproduction ?A gamete with a single set of chromosomes joins with another gamete to create a zygote, which then grows into an organism made up of cells with two sets of chromosomes. Sexual reproduction is a type of reproduction that requires a complex life cycle.
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Which of the following would be a form of pollution directly caused by cars on the highway?
O waste dumped into area streams
O fire on a local river from an oil slick
O atmospheric pollution falling from the sky
O overuse of production causing groundwater shortage
Answer: c
Explanation:
Which is NOT a function of the kidneys? (A) removal of waste products from the blood (B) maintenance of blood pH (C) regulation of water content of the blood (D) maintenance of homeostasis (E) excretion of carbon dioxide.
The kidneys do not function in the excretion of carbon dioxide. The respiratory system is responsible for exhaling carbon dioxide.
Explain about the Kidneys function?Our kidneys have a variety of vital functions that maintain our systems in balance. They drain the bloodstream of waste, toxins, and extra water, which the body excretes in urine. They aided in the creation of hormones that aid in the production of red blood cells and convert vitamin D into its active form so that the body can utilise it.
Toxins and pollutants in the blood can accumulate as a result of a severe decline in renal function. People may experience fatigue, a lack of strength, and difficulty focusing as a result of this. Anemia is a side effect of renal illness that can contribute to fatigue and weakness. Sleeping is a challenge for you.
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What does the difference in distribution tell you about the cells in the treated sample?.
Cancer cells that have been treated are distributed differently than cancer cells in an untreated sample because they are stopped in the G1 phase.
The S phase comes first, then the G2 phase, and the interphase is made up of these three phases. The mitotic phase, which consists of mitosis and cytokinesis and produces two daughter cells, begins after the interphase.
A procedure in which doctors remove tissue containing cancer cells.
The majority of cell development occurs in G1; cells enlarge and produce the proteins and organelles necessary for DNA synthesis. In particular, the centromere and other centrosome components are formed here, along with proteins and RNAs.
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(5pts) Mitosis isn’t just for cancer! Different tissues in the human body naturally divide at different rates. According to your chart, which normal tissue observed has the LOWEST mitotic index (divides the least often)?
Different tissues in the human body naturally divide at different rates is Ovary.
According to the attached chart, the normal ovary divided the most often with a mitotic index of 55%.The mitotic index of tissues represents the percentage of cells that are in mitosis compared to the total number of cells present in the tissues.Generally, cells of cancerous tissues divide more than those of normal tissues and, hence, have higher mitotic indices. In the chart, the mitotic indices of normal tissues ranged from 35 to 55% with the lung having the lowest and ovary having the highest while stomach had the intermediate index.A measurement of cellular proliferation is the mitotic index.It is described as the proportion of a cell population that is going through mitosis. Somatic cells divide during mitosis to produce two daughter cells.Varied cell types have different mitosis and cell cycle lengths. Increased cell division is indicated by a higher mitotic index. In contrast to healthy tissue growth or cellular healing at an injury site, cancer cells may have an enhanced mitotic index. For instance, a low mitotic index loses all prognostic significance in breast cancer patients over the age of 70.To know more about mitosis check the below link:
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a population grows according to a linear growth model. the first four generations have 3, 14, 25, 36 members a) what is the common difference? (2 pts)
The common difference among the first four generation is 11.
Linear population growth is meant by the growth when the number of populations grow linearly in a constant amount.
Mathematically linear population growth can be represented as: -
Pt = Po + (k × T)
Where,
Pt is population at time t
Po is population at time zero
k is constant growth rate
T is elapsed time in years from time zero
The population increases in a constant amount or number hence keeping the population of each generation constant.
The reproduction of new off springs from the parents give rise to a new generation. The generation surviving the time span is known as generation time.
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during mrna , a cap and poly-a tail are added, introns are removed, and the exons are then joined together.
The spliceosome removes introns, which are interstitial sequences within a pre-mRNA molecule that do not code for proteins, during RNA processing before the mRNA is released to the cytoplasm.
Does RNA splicing give the mRNA a poly-A tail?A eukaryotic cell immediately modifies the newly created RNA molecule, known as RNA processing, after a gene is translated. The initial RNA transcript undergoes these alterations at both ends, resulting in the maturation of the mRNA molecule.
Which step is the removal of introns?Both introns and exons are present in the pre-mRNA transcript. Splicing involves the removal of the introns. The pre-mRNA in this instance had two exons and one intron.
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The amount of water flowing through a channel over a given amount of time is called its ______.
Answer:discharge, or flow
Explanation:n
What does the difference in distribution tell you about the cells in the treated sample?.
The difference in distribution tell you about the cells in the treated sample, is that the treated cancer cells are arrested at the G1 phase.
They provide the body with structure, take in food's nutrients, convert them into energy, and carry out certain functions. Cells also contain the genetic material of the organism and are capable of self-replication. Each part of a cell serves a unique function.
Prokaryotic cells, which lack a nucleus but have a nucleoid region, and eukaryotic cells, which have a nucleus, are the two different types of cells. Prokaryotes are single-celled organisms, whereas eukaryotes can either be single-celled or multicellular.
The parasitic bacteria Mycoplasma gallicepticum is thought to be the tiniest known organism capable of autonomous development and reproduction. It lives in the respiratory, genital, and urine systems of primates. The cell type used in the investigation is called mycoplasma. Its diameter is 0.0001 mm.
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when crick and brenner studies the genetic code, they introduced deletions of 1, 2, or 3 nucleotides in a gene. when they introduced, 2 deletions, what was the observed result?
When Crick and Brenner introduced, 2 deletions, the observed result was that the genetic message shifted and all of the amino acids after the deletion were altered.
What is the genetic code?The genetic code refers to the fact that certain triplets of nucleotides or codons in the linear nucleotide sequence that a particular DNA gene fragment may encode into a specific type of amino acids after transcription to mRNA and further translation.
If we introduce a genetic change or mutation deletion in a gene sequence then it will change the open reading frame of the resulting gene (when this deletion is not a multiple of three since this is the nucleotide number in codons).
Therefore, with this data, we can see that the genetic code specifies the order of amino acids in the proteins and a deletion may change the amino acids downstream of the mutated site.
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What is the best evidence that all life evolved from prokaryotic rather than eukaryotic ancestors?.
The best evidence that all life evolved from prokaryotic ancestors rather than eukaryotes is that the oldest fossils found are prokaryotes.
The oldest bacterial fossils (a prokaryote) date to about 3.5 billion years ago. The oldest eukaryotes discovered are about 2.1 billion years old. Which means eukaryotic fossils are almost 1.5 billion years younger than the oldest fossils of prokaryotes. Also abiotic experiments are performed in the laboratory and liposomes are constructed. Which look like prokaryotic cells. Prokaryotes are the simple creatures and earliest life forms.
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find the distance between (-7,-2) (13, -23)
Answer:
distance = √((-7-13)^2 + (-2-(-23))^2)
distance = √(20^2 + 25^2)
distance = √850
distance = ≈ 29.01
Explanation:
If a mutation rendered the signal recognition particle nonfunctional, what would be the most obvious effect on the cell?.
If a mutation rendered the signal recognition particle nonfunctional, All proteins normally secreted by the cell would remain in the cytosol.
A mutation is a modification to the DNA sequence of an organism. Mutations can result through viral infection, errors in DNA replication during cell division, and exposure to mutagens.
Our cells are constantly undergoing mutations, yet very few of these have any negative effects on our health. There are numerous explanations for why mutations typically don't have significant effects. One explanation is that our cells have highly advanced machinery for quickly correcting mutations. Therefore, they won't have enough time to cause issues.
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why are waves of calcium that enter cells and are propagated through the cytoplasmic compartment, as happens within the first minute or so after fertilization, generally transient?
Waves of calcium that enter cells are propagated through the cytoplasmic compartment, as happens within the first minute or so after fertilization, generally transient because Ca2+ ions are quickly pushed from the cytosol straight into the ER and/or extracellular space.
Define cytosol?
The cytosol is referred to as the cytoplasm's matrix. In eukaryotes, it encircles the cell organelles. Prokaryotes carry out all metabolic processes.
The nucleus, endoplasmic reticulum, and mitochondria are among the organelles that are housed in the cytoplasm of eukaryotic cells. The portion of the cytoplasm that is not contained in a organelle is known as the cytosol. Despite the cytoplasm's apparent lack of structure.
Therefore, waves of calcium that enter cells are propagated through the cytoplasmic compartment, as happens within the first minute or so after fertilization, generally transient because Ca2+ ions are quickly pushed from the cytosol straight into the ER and/or extracellular space.
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Match the stimuli to the sensory receptors that respond to them.
the smell of freshly
baked cookies
a person
whispering
a rainbow outside
a window
stinky garbage
night vision
a loud bang
shapes in a room
after the lights
are turned off
Hearing is correlated with auditory receptors, which are found in the internal ear and detect sound waves: a person whispering , a loud bang
One of the photoreceptors in the eye that allows for twilight or night vision are rods: night vision , shapes in a room after the lights are turned off
One type of photoreceptor found in the eye that contributes to colour perception is the cone: a rainbow outside a window
The nostrils contain olfactory receptors that sense smell: the smell of freshly baked cookies, stinky garbage
What is auditory receptors?
a mechanoreceptor cell in the inner ear that is responsive to sounds. The arrangement of the accessory sensory structures allows for the transmission of information to the brain's central nervous system by the hair-like projections (stereocilia and kinocilia) when the proper stimuli are applied.
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The ability of an enzyme to change shape and apply strain when it binds to a substrate is called.
Answer: The correct answer to that should be induced fit.
Explanation: I hope this helps!!! : D
the pachylocephalosaur specimen which the genus goyocephale is based on has a flattened skull roof. it is thought that this condition indicates that
The given condition of the Pachycephalosaur specimen belonging to genus Goyocephale indicates that it is a juvenile specimen due to the evident juvenile state of the skull.
The skull of a Pachycephalosaur went through drastic changes as it matured and grew in size. The younger ones during the juvenile state possessed a flat skull with sizeable spikes on the head. However, as the Pachycephalosaur grew in size the spikes became small and it developed a huge cranial dome.
Goyocephale represents an extinct genus that existed in Mongolia during the late Cretaceous period around 76 million years ago. It is an example of a primitive Pachycephalosaur.
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The movement of substances across a cell membrane without the use of energy by the cell is.
The movement of substances across a cell membrane without the use of energy by the cell is passive transport.
Passive transport happens while materials move the plasma membrane with none enter of electricity from the cell. No electricity is wanted due to the fact the materials are shifting from a place wherein they have got a better attention to a place wherein they have got a decrease attention. Water answers are very vital in biology.
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we want to conduct an experiment to test the adaptive function of a polar bear's fur. we want to compare the fitness of bears with their natural coat, and bears with coats that evolved in a different environment. to do this comparison, we capture a number of polar bears so that we can manipulate their coats. for our treatment group, we shave the polar bears and glue on a coat of grizzly bear fur. an appropriate control for this treatment would be to:
We want to conduct an experiment to test the adaptive function of a polar bear's fur. we want to compare the fitness of bears with their natural coat, and bears with coats that evolved in a different environment. it changes genotype frequencies, not allele frequencies.
Adaptive behaviors encompass actual-life talents together with grooming, getting dressed, averting chance, securing meals coping with, following faculty policies, coping with money, cleaning, and making pals. Adaptive behavior also consists of the capacity to paint, exercise social abilities, and take personal duty.
Adaptive functioning refers to dealing with ordinary environmental needs and includes everyday living abilities that people perform to take care of themselves and interact with others.
Adaptive functioning encompasses those behaviors essential to residing independently, such as everyday dwelling competencies (e.g., dressing and grooming oneself), social talents, and communication competencies. youngsters with Autism Spectrum issues (ASD) display adaptive behavior impairments across all domain names.
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Water is said to be the earth's essential resource. Explain why water is such an essential resource.
Explanation:
Water is an essential resource because, well it is essential for us to live.
Water helps fuel our body. While we need nutrients from food and sleep to help our body function, we need water even more. If you were stuck in a room without food or water, you would die of lack of water before lack of food. Water is essential for our health. Not drinking water will dehydrate us. This can have to do with our cells, in biology. If our cells do not have enough water they will die, and if our cells die well then we will die because we are composed of cells.
It is not only humans who require water. Plants also require water, and again, if they become too dehydrated their cells will die, killing them. Animals, like humans require water as well.
Thus, water is essential because we need it for life, and would become dehydrated and then die without it.
biological studies that reveal that parents and biological children are more similar in levels of neuroticism and extroversion than parents and adopted children lends support to the assumption that?
The biological studies that reveal that parents and biological children are more similar in levels of neuroticism and extroversion than parents and adopted children support the assumption that genetic factors control these traits at a higher level than environmental cues.
What is the heritability of a trait?The expression of the heritability of a trait makes reference to the factors that control the expression of a given phenotypic feature in an individual such as in this case neuroticism and extroversion traits.
The heritability of a trait may depend on genetic factors, environmental conditions, and or the interaction between genetic and environmental conditions.
Therefore, with this data, we can see that the heritability of a trait may be due to genes, environment, or a mix of both, and certain traits are more closely associated with one type of factor compared with another.
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what is the limiting factor for anaerobic glycolysis? select one: a. glycogen depletion b. lactic acid accumulation c. pcr depletion
The limiting factor for anaerobic glycolysis is glycogen depletion. So, option A is the answer.
An anaerobic glycolytic system activates in case the aerobic system is no longer able to produce enough ATP required for the sustenance of the level of activity. In simpler terms, it is done when we need to transform glucose to lactate but we have a limited amount of Oxygen present.
To be able to undergo glycolysis for ATP production, the system requires glycogen to convert into glucose. But, if the glycogen gets depleted, there is no glucose which means the process stops happening.
Hence, glycogen depletion becomes the limiting factor for anaerobic glycolysis.
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when considering linked genes, you can identify the parental gametes in a test cross by finding the most frequent gametes. true false
True. When considering linked genes, you can identify the parental gametes in a test cross by finding the most frequent gametes.
Following genes on the same chromosomes can result in two types of gametes. If there is no crossing over, the products are parental gametes. Recombinant gametes are the result of crossing over.
When genes are on different chromosomes or are very close together on the same chromosome, they assort independently. That is, when the genes are expressed in gametes, the allele for one gene has no effect on the allele for the other. This results in the formation of all 444 possible types of gametes with equal, or 25%, frequency in a double heterozygous organism (AaBb).
Rather than assorting independently, the genes "stick together" during meiosis. That is, alleles of genes that are already present on a chromosome will tend to be passed on to gametes as a unit. The genes are linked in this case.
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The concept that engaging in a behavior over and over again can lead to changes in your brain is known as ______________.
Neuroplasticity is the idea that repeating a behavior can alter the way your brain functions.
What what is neuroplasticity, and how does it function?After injuries, such as a stroke or traumatic brain injury, it is defined as the nervous system's capacity to alter its activity in response to intrinsic or external inputs by rearranging its structure, functions, or connections (TBI).
What changes does neuroplasticity make in the brain?The term "neuroplasticity" can be thought of as an all-encompassing term that describes the brain's capacity to alter, modify, and adapt its structure and function during the course of a person's life and in response to experience.
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Which name best describes an enzyme that catalyzes a reaction involving the reduction of hydrogen peroxide with the oxidation of a second molecule of hydrogen peroxide?.
Catalase Heme Fe3+ best describes an enzyme that catalyzes a reaction involving the reduction of hydrogen peroxide with the oxidation of a second molecule of hydrogen peroxide.
The catalytic mechanism of catalases is a -step technique wherein catalase heme Fe3+ reduces one hydrogen peroxide molecule to water and generates a porphyrin cation radical called compound I, which is then oxidized by means of a second hydrogen peroxide to offer molecular oxygen and water.
A catalyst is a substance that accelerates a chemical reaction, or lowers the temperature or pressure needed to begin one, with out itself being consumed in the course of the response. Catalysis is the method of including a catalyst to facilitate a reaction.
A catalyst is a substance that can be added to a reaction to increase the response charge without getting consumed in the manner. Catalysts typically speed up a reaction by means of lowering the activation electricity or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions.
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True or false? for a signal transduction pathway to be activated, hormones must be present in the bloodstream at very high concentrations.
False, Only low concentrations of hormones are needed in the bloodstream to activate a signal transduction pathway.
Signal transduction pathway is a Process by which a signal on a cell's surface is converted to a specific cellular response in a series of steps.
Signal transduction pathway involves the binding of extracellular signaling molecules and ligands to receptors located on the cell surface or inside the cell that helps to trigger processes inside the cell, to invoke a response. Three steps includes Reception process by which a cell detects a signal in the environment. Transduction is process of activating a series of proteins inside the cell and Thirdly response that is change in behavior that occurs in the cell as a result of the signal.
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Which eye muscle sends its tendon of origin through a pulley or trochlea before inserting on the globe?.
The superior oblique muscle sends its tendon of origin through a pulley or trochlea before inserting on the globe. This muscle is responsible for abduction and depression of the eye. It also helps to rotate the eye inward (medially).
The tendon of the superior oblique muscle passes through a pulley that is formed by the inferior oblique muscle and the lateral rectus muscle. The pulley system allows the superior oblique muscle to change the direction of its pull on the eye. The superior oblique muscle inserts on the eye at the superolateral aspect of the globe. The muscle contracts to produce inferior and medial movement of the eye.
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