in humans, which structure prevents food from entering the trachea?

The nucleus is in the center of the atom and it contains protons and neutrons.

Answer:

An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.

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Expressions are used to execute computations in Excel formulas.

= D5 * $J$2 is the Excel formula to enter in cell E5.

The real hours are shown by Cell D5.

The billing rate is shown by Cell J2

The following is a representation of the product of the billing rate and the actual hours:

D5 * J2

Absolute references must be used to refer to Cell J2;

So, we modify the formula above to read as follows: D5 * $J$2

So, we modify the formula above to read as follows: = D5 * $J$2

The formula to enter in cell E5 is therefore: = D5 * $J$2.

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Explanation:

12.0L =12000cm^3

\(density = \frac{mass}{volume} \)

\( = \frac{6}{12000 } \\ = 0.0005 {gcm}^{3} \)

Dry bean incubations were included in the experimental set-up to serve as a control group and provide a baseline for comparison with other treatments.

Dry bean incubations were included in the experimental set-up to establish a control group. In scientific experiments, it is crucial to have a control group that is not subjected to any experimental treatments. The purpose of the control group is to provide a baseline against which the effects of other treatments can be compared. By incubating dry beans without any additional treatments, researchers can observe the natural changes and behaviors of the beans over time.

Including dry bean incubations as a control group helps researchers distinguish between the effects of the experimental treatments and the inherent variability in the beans themselves. This control group allows researchers to identify any changes or outcomes that can be attributed specifically to the experimental treatments, rather than natural variations in the beans' characteristics. It also helps in validating the reliability and reproducibility of the experimental results. By comparing the results of the treated beans with the control group, researchers can draw conclusions about the effectiveness or impact of the experimental treatments on the beans' growth, development, or other relevant parameters.

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There are two types of linkage--Complete linkage,Incomplete linkage.

When two genes are close with each other (together )on the same chromosome, then they are said to be linked wih each other, which means that the alleles, or gene versions, already together on one chromosome will be inherited as a unit more frequently than not.

When it is Crossing-over during meiosis sometimes they separates genes that had been on the same chromosome onto homologous chromosomes.

Alleles which are positioned on the same chromosome are not always inherited together because during meiosis linked genes can became unlinked. Frans Janssen a biologist suggested taht the chromosomes become unlinked during homologous recombination, a process where homologous chromosomes exchange segments of DNA.

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Answer:

Enzymes are a protein in nature and are made when amino acid links together in the correct sequence.

Answer:

climate change, rising temperatures affecting wildfires, ocean warning etc.

Also PLEASE PLEASE PLEASE PLEASE give m brainiest i need it please I WOULD REALLY APPRECIATE IT ALOT  

Explanation:

The given statement "Two different body forms of cnidarians were different in almost all aspects of their shape and function" is true. Because cnidarians exhibit two distinct body forms: the polyp form and the medusa form. These two body forms differ significantly in their shape and function.

Polyps are typically cylindrical or vase-shaped and are attached to a substrate at their base. They have a mouth surrounded by tentacles at the top, which are used for feeding and defense. Polyps are typically sessile or slow-moving, and they reproduce asexually by budding.

In contrast, medusae are typically bell-shaped with tentacles hanging from the base. They are free-swimming and move by contracting their bell-shaped body to create a jet of water.

Medusae also have a mouth surrounded by tentacles, which are used for feeding and defense. Medusae reproduce sexually, with the fertilized egg developing into a planula larva, which settles on a substrate and develops into a polyp.

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--The given question is incomplete, the complete question is

"True or false: the two different body forms of cnidarians are different in almost all aspects of their shape and function."--

Mendel in his breeding experiments crossed true-breeding plants to produce a second generation, which were then further allowed to self-pollinate to generate the offspring. These generations will be named P, F1 and F2 respectively.

When we are assessing a particular genetic study, we can observe that there exist different generations through which we study the patterns of inheritance. Parental generation is basically defined as the generation which involves the two parent individuals which are mated in order to foresee or analyze the genotypes that their offspring will posses.

The first generation also known as the F1 generation and it basically includes the offspring of the parental (P) generation. In his breeding experiments, Mendel first crossed true breeding plants which are the parental generation or P. They give rise another generation called F1 which were then self-crossed to produce an F2 generation.

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Answer:

please write the questions I can't tap the picture.

Explanation:

6CO2 + 6H2O => C6H12O6 + 6O2

During photosynthesis, carbon dioxide gas and water reacts in the presence of sunlight to produce glucose and oxygen gas.

Explanation:

\(\tt{6CO_2 + 12H_2 O→C_6 H_{12 }O_6+ 6O_2+ 6H_2 O}\)

Here, six molecules of carbon dioxide (CO2) combine with 12 molecules of water (H2O) using light energy. The end result is the formation of a single carbohydrate molecule (C6H12O6, or glucose) along with six molecules each of breathable oxygen and water.

Answer:

Differentiate

Explanation:

Answer:

differentiate or specialise

Mendelian inheritance states that traits are determined when offspring receive one allele for each trait from each parent.

Mendelian inheritance, named after the Austrian monk Gregor Mendel, explains how traits are passed on from parents to offspring. The basic principle of Mendelian inheritance is that traits are determined by the inheritance of alleles, which are different forms of a gene.

1. Alleles: Genes exist in pairs, with one allele inherited from each parent. These alleles can be either dominant or recessive. Dominant alleles exert their effects even if only one copy is present, while recessive alleles require two copies to be expressed.

2. Gamete Formation: When an organism produces gametes (sperm or eggs), it undergoes a process called meiosis. During meiosis, the pairs of alleles separate, so that each gamete receives only one allele for each trait.

3. Fertilization: When two gametes (one from each parent) combine during fertilization, the resulting offspring inherits one allele for each trait from each parent. This is why offspring typically exhibit a combination of traits from both parents.

4. Punnett Square: To predict the possible combinations of alleles in offspring, a Punnett square can be used. This is a grid that helps determine the probability of different genotypes and phenotypes.

5. Dominant and Recessive Traits: If a dominant allele is present, it will be expressed in the offspring's phenotype. However, if both alleles are recessive, the recessive trait will be expressed.

Overall, Mendelian inheritance provides a framework for understanding how traits are inherited and passed down from one generation to the next through the transmission of alleles from each parent.

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Answer:

This is because the hemoglobin molecule changes its shape, or conformation, as oxygen binds. The fourth oxygen is then more difficult to bind. The binding of oxygen to hemoglobin can be plotted as a function of the partial pressure of oxygen in the blood (x-axis) versus the relative Hb-oxygen saturation (y-axis).Explanation:

copy and pasted

Answer:

one everything requires the other just red blood cells need

Explanation:

because dpression of answering peoples situations

Answer:

alike- plants absorb the light energy they covert it into chemical energy for their own nutrition.

different- energy stored in the bonds of atoms and molecules

Agouti signaling can be induced by activating the Agouti signaling protein (ASP) or by modulating the activity of its receptor, the melanocortin-1 receptor (MC1R), which is present on the surface of melanocytes in the skin.

One way to activate ASP is to use small molecule agonists, which are compounds that can bind to the ASP and induce its signaling activity. Alternatively, ASP can be produced by the body in response to certain conditions, such as high levels of insulin or glucose.

To modulate the activity of MC1R, one approach is to use small molecule agonists or antagonists that can bind to the receptor and either activate or inhibit its signaling pathway. Another approach is to use genetic manipulation to alter the expression or activity of MC1R, either by introducing mutations or by using gene editing techniques.

Overall, inducing agouti signaling requires the use of specific compounds or genetic manipulations that can activate or modulate the activity of ASP or MC1R.

Answer:

Unlike modern-day evolutionary geneticists, Darwin did not have the knowledge of modern-day genetics or the ability to sequence the genome. So, Darwin couldn’t have determined that the trait of flightless wings was likely caused by a genetic mutation.

Explanation:

PLATO

It is most accurate to say that biological death a. is a process consisting of multiple events

Every living being that is born into the world will one day die. The world of medicine defines three phases of death, from clinical death, brain death to the final phase of biological death where the body becomes rigid and the decomposition process begins.

Biological death is the cessation of activity processes in an individual's biological body which is characterized by loss of brain function, cessation of heart rate, cessation of blood pressure and cessation of breathing processes. The cells in the body of these living things can no longer function and are irreversible/permanent because there is no cell regeneration. The skin of the body showed death spots and the body became stiff. It is the buildup of calcium in the muscles that makes the body stiff a few hours after death or also known as rigor mortis. Therefore it is most accurate to say that biological death is a process consisting of many events and lines between life and death.

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If SHH is to be accumulated and then released into cellular space at a specific time, it would be necessary to establish storage mechanisms and release mechanisms.

To store the produced SHH would require specialized cellular compartments.

To release all of the stored SHH, a signal or stimulus would need to trigger the release of SHH from storage into the extracellular space.

SHH is a protein that is stored within the cell and is released into the extracellular space in times of need. These processes need to work in a very regulated way in order to achieve their objectives. For this reason, well-regulated and optimized storage and release mechanisms are needed.

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(1 pt) True.

Lactose is a disaccharide composed of galactose and glucose monomers. When lactose is broken down by the enzyme lactase, it is hydrolyzed into its component monosaccharides, galactose and glucose.

(1 pt) True.

In the absence of glucose, the lac repressor protein binds to the operator region of the lac operon, preventing RNA polymerase from binding and initiating transcription of the structural genes. However, the presence of glucose promotes the formation of the CAP-cAMP complex, which binds to a specific site near the promoter region of the lac operon, allowing RNA polymerase to bind and initiate transcription. This is known as positive regulation, as the presence of glucose is required for the efficient expression of the lac operon.

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True. The threshold is the smallest intensity of a stimulus that must be present for it to be detected.

option A is the correct answer.

The threshold refers to the minimum level of intensity or magnitude of a stimulus that is required for it to be detected or perceived.

This is true across various sensory modalities, including vision, hearing, touch, taste, and smell. The threshold can vary depending on a variety of factors, including the type of stimulus, the background noise or interference, the individual's sensory sensitivity, and other contextual factors.

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The promoter is a crucial component of the DNA strand that controls the transcription of the gene it is located near. Mutations in the promoter can have varying effects on the transcription of the gene it controls. In some cases, a mutation in the promoter region can cause an increase in the transcription of the gene, resulting in higher levels of the protein encoded by the gene. In other cases, the mutation can decrease the transcription of the gene, leading to lower levels of the protein.

There are several ways in which promoter mutations can affect gene transcription. One possibility is that the mutation may affect the binding of transcription factors to the promoter region. Transcription factors are proteins that help to recruit RNA polymerase, the enzyme responsible for transcribing DNA into RNA, to the promoter region. If a mutation in the promoter region disrupts the binding site for a particular transcription factor, then the transcription factor may not be able to bind to the promoter, and transcription may be reduced.

Overall, the effect of promoter mutations on gene transcription can be complex and context-dependent. However, understanding the role of the promoter in controlling gene expression is crucial for understanding the regulation of gene expression in both normal and disease states.

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Answer:

They work together to regulate water loss and gas exchange.

They work together to regulate the loss of water and exchange of gases.

The tiny pores or openings in plant tissue, which allow for the exchange of gases are known as stomata.

The unique cells, which surround stomata and work to close and open the stomatal pores are known as guard cells.

Both these helps a plant to take in carbon dioxide at the time of photosynthesis and also assist in reducing the loss of water by getting closed when conditions are dry and hot.

Thus, stomata and guard cells work together to regulate the loss of water and gas exchange.

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Answer: false

Explanation:

Answer:

Explanation:

What are the body's levels of organization from least complex to most complex?

Answer:

A. Proteins

Explanation: Enzymes are proteins, and DNA polymerase is a protein. Any type of enzyme will always end in -ase, and an enzyme is a protein. So, DNA polymerase belongs as a protein.

The cyclin begins to be destroyed at the metaphase of the cell cycle causing the chromosomes to begin to seperate.

Explanation:

now a days we dont need gooosbumps or the scientifc name cutis anserine.

it was used by our ancestors when we got afraid or for the cold an example of this is if a predator is attacking us the hair on our skins would point straight and we'd look bigger and hopefully it would scare them away, we can still see this in animals... but in present day its completly useless