The hormone __________ stimulates the secretion of the enzyme __________ in the stomach.
gastrin; pepsinogen
gastrin; secretin
gastrin; cholecystokinin
pepsin; secretin
pepsin; gastrin
The hormone gastrin stimulates the secretion of the enzyme pepsinogen in the stomach
Pepsinogen is an inactive precursor form of the enzyme pepsin, which is secreted by the chief cells in the stomach lining. Pepsinogen is converted into active pepsin by the action of hydrochloric acid (HCl) and other proteases, which cleave off a small peptide fragment from pepsinogen to expose the active site of pepsin.
Pepsin is important for the digestion of proteins in the stomach and helps to break down large protein molecules into smaller peptides and amino acids that can be absorbed and utilized by the body.
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A construction company wants to trap pollutants in runoff at its sites. What should the company do?
O A.
Practice conservation tillage at the sites.
O B. Release beneficial insects,
such as spiders and ladybugs, at the sites.
O C. Plant grass and
lay straw at the sites.
O D. Plant trees at the sites.
Answer:
O C. Plant grass and lay straw at the sites.
Explanation:
Plant grass and lay straw at the sites are used by the company to trap pollutants at its sites because these plants reduce the runoff by absorbing most of the water and by absorbing water we can trap the pollutants present in that water. By trapping this industrial water, we can reduce water pollution that occurs due to this industrial waste and pollutants so planting grass and lay straw is the best way to trap pollutant.
Which of the following can be inferred from the genetic code?
A.All organisms have a common biochemical evolutionary origin.
B.Organisms can live without genetic code.
C.Four nucleotides.
D.Four nucleosides.
Answer:
A. All organisms have a common biochemical evolutionary origin.
Explanation:
Genetic code is the biological mechanism by which the DNA in our body is used to synthesize protein needed for growth and development. The genetic code comprises of all the possible 64 codons i.e. a group of three nucleotides that encode an amino acid.
One of the characteristics of the genetic code is that it is UNIVERSAL. This means that all known living organisms make use of the same genetic code and hence, this portrays that all living organisms share a common biochemical evolutionary origin.
Given that almost all organisms obtain energy from food by the process of cellular respiration, which is the most likely explanation for what prevents Earth from running out of oxygen?
A. The net effects of the reactions of photosynthesis and cellular respiration are the opposite of one another, therefore the products of one are the reactants of the other, creating a cycle.
B. The energy flow—and thus oxygen flow—for cellular respiration and photosynthesis take place in the same direction, and therefore build upon one another.
C. Cellular respiration is a process that releases energy and oxygen, while photosynthesis withdraws energy and uses oxygen, therefore keeping each process in balance.
D. Oxygen readily accepts electrons, so cellular respiration uses a negligible amount of oxygen.
the answer would be A
The net effects of the reactions of photosynthesis and cellular respiration are the opposite of one another, therefore the products of one are the reactants of the other, creating a cycle. Hence option A is correct.
What is photosynthesis?Photosynthesis is defined as the process through which green plants use energy from sunlight to transform carbon dioxide and water into food. The process of photosynthesis is used by plants, algae, and some microorganisms to convert light energy into chemical energy. Photosynthesis is a process, not an event. Every time sunshine is present, it happens continually.
Specifically, glucose-stored energy is converted to ATP during cellular respiration. The chemical energy the cell can use is called ATP, or adenosine triphosphate. It is the molecule that gives your cells the power they need to carry out tasks like contracting your muscles when you walk down the street.
Thus, the net effects of the reactions of photosynthesis and cellular respiration are the opposite of one another, therefore the products of one are the reactants of the other, creating a cycle. Hence option A is correct.
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What are adenine, guanine, cytosine, and thymine?
A) They are the four nucleotides that form DNA.
B) They form the phosphate backbone of DNA.
C) They are the four nitrogenous bases found in DNA.
D) They are the four sugars associated with DNA.
Answer:
A) They are the four nucleotides that form DNA.
Explanation:
You are wellllcoommme!
These are the four nucleotides that form DNA. I learned this from khan academy, their videos are really helpful. They are straightforward and easy to understand.
mucous membranes are an example of which type of tissue?
Answer:epithelial
Explanation:
If an epithelial tissue has two layers and the one on the bottom is tall and the one on the top is flat, the tissue would be called? A.simple columnar B.simple squamous C.stratified columnar D.stratified cuboidal E.stratified squamous
The tissue would be called "stratified squamous." This tissue consists of multiple layers of cells, with the top layer being flattened and the bottom layer being taller, the correct option is E.
The flattened cells provide protection against abrasion and damage, while the taller cells provide structural support and nourishment to the top layer. Stratified squamous epithelium is found in areas of the body that are subjected to mechanical stress, such as the skin, mouth, esophagus, and vagina. The flattened cells at the top of the tissue are constantly being shed and replaced by new cells from the lower layers, allowing for efficient repair and maintenance of the tissue. Therefore, the tissue's structure is well-suited to provide a protective barrier against physical and chemical stresses while also allowing for regeneration of the tissue.
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Which one is not correct about traits ? they are optional, they use the keyword is ,they can be inherited form other traits ,they inherited using the keyword include
"They use the keyword is" is not the correct statement. The correct option is option b.
Traits are basically the characteristics or attributes which happen to define an individual or an organism. They can include physical features, behaviors, or even genetic predispositions. Traits are not optional; they are inherent qualities that are typically present in individuals.
Some traits can be inherited from other traits or passed down through genetic inheritance. However, the inheritance of traits does not necessarily require the use of the keyword "is". The inheritance of traits is basically a very complex process which gets influenced not only by various genetic as well as the environmental factors.
Hence, the correct option is option b.
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ASAP A group of specialized cells working together to perform a function is a(n) ____________.
A. Tissue
B. Cell
C. Organ
D. Organ system
Answer:
THE answer is gonna be A.Tissue
This is the Answer for your question :-)
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What are some causes and effects of disease?
Answer:
Explanation:
CAUSE
Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.
Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.
EFFECT
Diseases can affect people not only physically, but also mentally, as contracting and living with a disease can alter the affected person's perspective on life. Death due to disease is called death by natural causes.
wild birds unlimited is a chain of small stores that sell a wide variety of bird feeders, wild bird food, and related backyard wildlife enjoyment products. wild birds unlimited would best be described as a(n)
Since wild birds unlimited deals with the variety of bird feeders, wild bird food, and related backyard wildlife enjoyment products, it is described as: (3) single-line retailer.
Bird feeders are the fancy containers that are designed especially to attract the birds towards them. They also contain the grains for birds so that they can feed on it. The speciality of these feeders is their attractive designs and different variety of food offered for the birds.
Single-line retailers are the small shop owners that deal with a single type of product. They possess different sizes, varieties, and qualities in the product but the category of product is only one type. Such stores are also called speciality stores.
The given question is incomplete, the complete question is:
Wild birds unlimited is a chain of small stores that sell a wide variety of bird feeders, wild bird food, and related backyard wildlife enjoyment products. Wild birds unlimited would best be described as a(n):
limited-line wholesaler.general-merchandise retailer.single-line retailer.off-price retailer.To know more about single line retailers, here
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Which structure of viruses can mutate over time and lead to the development of new strains?.
The Proteinaceous structure of the virus can mutate over time and lead to the development of new strains.
What is Mutation?The mutation may be defined as the phenomenon of altering the sudden, stable, and inheritable genomic sequences of the organisms.
The outer layer of the virus is made of proteins and is hence known as a capsid. This layer is responsible for the allocation of mutations over time and leads to the development of new strains with respect to protein structures.
The changes in protein structures alter the whole physiology, metabolic, and anatomy of viruses accordingly.
Therefore, it is well described above.
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please explain the answer choice if u answer this
After garbage is placed on the surface of old dump, the substance from the garbage seep through the soil and reach groundwater (option A).
What is garbage?Garbage is useless or disposable material; waste material of any kind.
A dump is a place where waste or garbage is left; a ground or place for dumping ashes, refuse, etc.; a disposal site.
According to this question, when garbage is placed on the surface of an old dump, the substances from the garbage seep through the soil and reach groundwater.
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How can you be a good steward of your epigenome?
at the heart of epigenetics is the realization that environmental influences can turn on and off genes. conventional biology describes that our inheritance is set in stone at conception when the egg and sperm fuse, where genes remain unchanged and experiences are never inherited. however, epigenetics challenges this view. describe how! give specific examples.
how does the presence of stress and/or poor nutrition in a pregnant woman affect her child and future generations?
Being a good steward of your epigenome means taking care of the environmental factors that can influence gene expression. This involves being mindful of what we eat, how we live, and the environments we expose ourselves to. Stress and poor nutrition in a pregnant woman can affect her child's epigenome in altering the gene expression, behavioral problems.
Epigenetics challenges the view that our inheritance is set in stone at conception by demonstrating that environmental factors can affect gene expression. For example, exposure to toxins, stress, and poor nutrition can cause epigenetic changes that can be passed on to future generations.
Stress and poor nutrition in a pregnant woman can affect her child's epigenome in several ways. Firstly, it can alter gene expression in ways that may increase the child's risk of developing health problems later in life, such as obesity, diabetes, and heart disease. Secondly, these changes can be passed down to future generations, which means that the child's children and grandchildren may also be at increased risk of developing these health problems.
Studies have shown that pregnant women who experience high levels of stress have children who are more likely to have behavioral problems, such as ADHD and anxiety. Similarly, poor nutrition during pregnancy can lead to epigenetic changes that affect the child's metabolism, immune system, and brain development.
In conclusion, being a good steward of your epigenome involves being mindful of the environmental factors that can affect gene expression and taking steps to minimize their impact. This can include eating a healthy diet, getting regular exercise, managing stress, and avoiding exposure to toxins. By doing so, we can help ensure that our genes are expressed in a way that promotes good health and wellbeing for ourselves and future generations.
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One of the function of a centromere is to contribute to proper chromosome segregation the other function is to
1. develop meiotic chromosome replication
2. ensure that proper chromosome arm length is maintained
3. allow easy karyotyping
4. hold sister chromatids together
One of the functions of a centromere is to hold sister chromatids together during cell division, while the other function is to contribute to proper chromosome segregation.
The centromere plays a critical role in ensuring accurate distribution of genetic material to daughter cells during both mitosis and meiosis. It functions as a binding site for kinetochore proteins, which attach to the centromere and facilitate the attachment of spindle fibers.
This attachment allows for the alignment and separation of sister chromatids during cell division. Additionally, the centromere plays a role in maintaining the proper length of chromosome arms and allows for the identification and analysis of chromosomes through karyotyping techniques.
One important function of a centromere is to hold sister chromatids together. During cell division, the centromere serves as a site of attachment for kinetochore proteins, which form the connection between the centromere and the spindle fibers. This attachment ensures that sister chromatids are properly aligned and segregated during mitosis and meiosis. Without a functional centromere, sister chromatids may not separate correctly, leading to errors in chromosome distribution and potential genetic abnormalities in daughter cells.
Furthermore, the presence of distinct centromere regions allows for the identification and analysis of chromosomes through karyotyping techniques. Karyotyping involves staining and visualizing chromosomes, often arranged in a characteristic pattern based on their size, banding patterns, and centromere position. This technique is useful for studying genetic disorders, identifying chromosomal abnormalities, and assessing overall chromosomal health.
In summary, the centromere serves multiple important functions. It holds sister chromatids together, ensuring their proper alignment and segregation during cell division. It also contributes to the maintenance of chromosome arm length, aids in chromosome identification through karyotyping, and plays a vital role in preserving genomic integrity.
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Which of these organisms is not matched to the main type of nitrogenous waste it excretes?
Reptiles−−uric acid
Terrestrial insects−−uric acid
Freshwater fishes−−ammonia
Marine fishes−−ammonia
The correct option is B -Terrestrial insects−−uric acid.
The species that is incompatible with the main sort of nitrogenous waste it excretes is an insect that lives on land. The correct response for terrestrial insects is "uric acid," not "ammonia."
The primary nitrogenous waste excreted by terrestrial insects, such as insects and spiders, is uric acid. Uric acid is a somewhat insoluble waste product that requires less water for excretion in organisms living in dry or terrestrial settings.
Hence option B is correct.
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what type of star is an example of a massive star?
Answer:
The largest known star is UY Scuti, a hypergiant with a radius somewhere around 1,700 times larger than the sun. Its mass, however, is only 30 times that of our nearest star. If R136a1 swapped places with the sun, it would outshine our closest star as much as the sun currently outshines the moon.
Explanation:
please give me a heart
6. What is the purpose of mitosis?
a. It guarantees that each daughter cell has half the amount of DNA of parent cells
b. It ensures that new nuclei have an exact copy of DNA
c. It ensure the reproduction of mitochondria and chloroplasts
d. It prevents the occurrence of cancer cells
Answer:Two genetically identical daughter cells with the same chromosome number as the parent cell.
Which plant characteristics are
common to pioneer species?
Answer:
Typically, the pioneer plant species are photosynthetic as the new habitat would likely have soil with fewer nutrients and largely exposed to no other energy source but light energy. It is also more likely that the pioneer plant species employ wind pollination.
Plants with roots that act as wedges to slowly break apart rocks.
Can someone please help me? :(
Answer:
C
Explanation:
trust
Answer:
It's C and A
Explanation:
What factors
account for the uneven distribution of groundwater on Earth?
What is the source of most air pollution
people, people, people
whats a wave in science terms
Answer:
Definition of a Wave
Explanation:
a disturbance or variation that transfers energy progressively from point to point in a medium and that may take the form of an elastic deformation or of a variation of pressure, electric or magnetic intensity, electric potential, or temperature.
Locust trees are very common leguminous trees throughout our region. These trees often turn brown in mid- to late-summer, causing many trees along the highway to be discolored. This is because
Locust trees are indeed very common leguminous trees in our region. They are known for their beautiful, fragrant flowers and strong, durable wood. However, they are also susceptible to a condition known as leaf scorch, which can cause them to turn brown and become discolored in mid- to late-summer.
Leaf scorch is often caused by a combination of factors, including high temperatures, low moisture levels, and poor soil conditions. While it can be unsightly, it usually does not cause long-term damage to the tree. If you notice that your locust tree is turning brown or becoming discolored, it is important to take steps to improve its growing conditions, such as watering it regularly and fertilizing it with a balanced fertilizer.
Hi! Locust trees are indeed common leguminous trees in many regions. The reason these trees often turn brown and become discolored in mid- to late-summer is due to a combination of factors, including seasonal changes, stress, and potential pest or disease issues. As the season progresses, the trees may shed older leaves to conserve resources, resulting in a brown appearance. Additionally, stress from heat, drought, or poor soil conditions can cause discoloration. Lastly, pests or diseases such as locust leaf miners or canker infections may also contribute to the brown appearance of locust trees during this time.
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I need help with my bio homework please help me, thanks ....
Answer:
Sure what is it?
Explanation:
Answer:
wheres the upload?
Explanation:
If a DNA molecule has 8 G's, it will have
If a DNA molecule has 3 T's, it will have
A's.
If a DNA molecule has 8 G's, it will have 8 C's.
If a DNA molecule has 3 T's, it will have 3 A's.
What is the ratio of the nucleotides in a DNA molecule?If a DNA molecule has 8 G's, it will also have 8 C's. This is because in DNA, guanine (G) pairs with cytosine (C) through hydrogen bonds, so the number of G's is always equal to the number of C's in a DNA molecule.
Similarly, if a DNA molecule has 3 T's, it will also have 3 A's. In DNA, adenine (A) pairs with thymine (T) through hydrogen bonds, so the number of A's is always equal to the number of T's in a DNA molecule.
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Which two species share a more recent common ancestor (making them more closely related to each other)? (select all that apply)
Question 7 options:
Fly agaric
Palm tree
Gecko
Answer:
palm tree and fly agaric
Explanation:
Unusual normality how do Ishmael's silence and interactions with his peers develop his point of view about embracing differences
Ishmael's silence and interactions concluded how lucky they are to be with their families and a world free of violence.
Unusual Normality is an essay written by Ishmael's Baeh which describes a 12-year-old child who was a child soldier forced to fight with the Rebel groups in the Sierra Leonne. His family was murdered by the rebel groups in the Civil War. It describes the change in his life, a second chance in childhood in America. His friends thought of him as unusually skilled.
The main idea behind this was never to take anything for granted, what you think is nothing for you is everything for someone else.
Hence, Ishmael's silence and interactions concluded how lucky his friends are to be with their families and a world free of violence.
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in the hardy-weinberg equation, q2 represents __________.
In the Hardy-Weinberg equation, q2 represents the frequency of the homozygous recessive genotype in the population.
This equation provides a framework for understanding genetic variation and the relationship between genotype and phenotype in a population. The equation states that the frequency of the two alleles in a population (p and q) remain constant from generation to generation.
The frequency of the homozygous recessive genotype (q2) is calculated by squaring the frequency of the recessive allele (q). The frequency of the homozygous dominant genotype (p2) is calculated by squaring the frequency of the dominant allele (p). The frequency of the heterozygous genotype (2pq) is calculated by multiplying the frequency of the two alleles (p and q).
The sum of the three genotypic frequencies is equal to one, which represents the entire population. This equation can be used to calculate the expected proportions of genotypes in a population given the frequencies of the alleles.
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In the Hardy-Weinberg equation, q2 represents the frequency or proportion of homozygous recessive individuals in a population.
The Hardy-Weinberg equation is a model that describes the equilibrium of allele frequencies in a population over time. It assumes that a population is in equilibrium and is not influenced by factors such as mutation, migration, selection, or genetic drift. The equation includes two variables p and q, where p represents the frequency or proportion of dominant alleles and q represents the frequency or proportion of recessive alleles. Therefore, q2 represents the proportion of individuals who have two copies of the recessive allele and will express the recessive phenotype.
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Which of the following are
polysaccharides created from?
A. polymers
B. monomers
C. glucose
D. chitin
Answer:
glucose
Explanation:
similar to glucose in many ways.