Answer:
b
Explanation:
Explain how the circulatory helps maintain homeostasis in a human. Your answer must include which materials are transported in the blood that are vital to the survival of cells and which process they are required for.
Answer:
I have no idea how to help you with this, I'm sorry
The circulatory system is vital for transporting essential materials like oxygen, nutrients, hormones, and waste products, and it plays an important role in immune defense and the regulation of pH, temperature, and osmotic pressure, all of which contribute to maintaining homeostasis in the body.
The circulatory system plays a crucial role in maintaining homeostasis in humans. Homeostasis is the body's way of keeping a stable internal environment despite changes outside the body. Here is how the circulatory system helps in this process:
Transporting Oxygen and Nutrients: Blood carries oxygen from the lungs and nutrients from digested food to all the cells in the body. Oxygen is vital for cellular respiration, a process that provides energy to cells. Nutrients like glucose are necessary for various cellular functions and energy production.
Removing Carbon Dioxide and Waste Products: Blood also helps in removing carbon dioxide, a waste product of cellular respiration, and other metabolic wastes from cells. These waste products are transported to organs like the lungs and kidneys, where they are expelled from the body.
Hormone Distribution: Hormones, which are chemical messengers produced by endocrine glands, are transported through the blood to reach their target organs. These hormones play a role in regulating various bodily functions like growth, metabolism, and reproduction.
Immune Response: Blood transports white blood cells and antibodies, which are vital components of the immune system. White blood cells help fight infection by attacking bacteria, viruses, and other pathogens.
Regulation of pH and Temperature: Blood helps stabilize the body's pH and temperature. Blood proteins act as buffers, helping to maintain the pH within a narrow range. Blood also distributes heat throughout the body, helping to regulate temperature.
Clotting and Wound Healing: When a blood vessel is injured, clotting factors and platelets in the blood help form a clot to prevent excess blood loss and facilitate wound healing.
Osmotic Pressure Regulation: Blood helps maintain osmotic pressure, which is the balance of fluid between the blood and the surrounding tissues. This is important for keeping cells hydrated and functioning properly.
What is the relative size and composition of the universe, a galaxy, and a solar system? (and please, don't copy and paste)
Answer:
Socratic app
Explanation:
it will help you
Question 13 (2 points)
The process of cellular differentiation is a direct result of
a. differential gene expression.
b. morphogenesis.
c. cell division.
d. apoptosis.
e. differences in cellular genomes.
Answer:
a differential gene expression.
How does the radiation energy reach Earth?
A male cardinal’s red color is an example of a trait affected by natural selection. The females of the species choose mates based on the vibrant colors of the males’ feathers. If females begin using different criteria than feather color when they choose mates, what would most likely happen to the color of the male cardinals over time?
Answer:
it would adapt/change
Explanation:
Answer:
increased variation in the shades of red because there is no advantage in one specific color
Explanation:
At the end of anaphase II, how many chromatids are on each side of the cell?
Anaphase II is defined as the stage in which sister chromatids separate and move towards the opposite pole of the cells. It is the second last stage of cell division, which occurs before the telophase.
The features of the anaphase II are:
1. Anaphase II is characterized by the separation of sister chromatids and the movement of each chromatid towards the opposite poles.
2. Anaphase II is the second last stage of meiotic division.
3. The sister chromatids are pulled away by the kinetochores attached to the microtubules.
4. At the end of anaphase II, each cell has 46 chromatid.
Therefore, at the end of anaphase II, each daughter cell has 46 chromosomes dragged at one end, whereas the other 46 are dragged to the opposite ends.
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At the end of anaphase II in meiosis, each side of the cell typically contains one chromatid, ensuring equal distribution of genetic material to the resulting daughter cells.
At the end of anaphase II in meiosis, the sister chromatids, which were initially present in each chromosome during metaphase II, separate and move towards opposite poles of the cell.
As a result, each side of the cell receives an equal number of individual chromatids, rather than chromatid pairs. Therefore, at the end of anaphase II, there is typically one chromatid on each side of the cell, as the chromatids have undergone separation from their sister chromatids.
This process ensures that each resulting daughter cell receives the correct number of chromosomes, half of the original diploid number, allowing for genetic diversity and the formation of haploid gametes during meiosis.
How does multicellular organisms grow?
Answer: They grow by increasing the number of cells they have. This relies on the processes of cell division and differentiation.
A scientist notices an increase in the glucose
production in the plants he is studying. What are the
possible reasons? Check all that apply.
Answer:
The plant was exposed to more intense light, and the plant absorbed more carbon dioxide.
Explanation:
As we know the equation of photosynthesis :
Water + carbon - dioxide ----- glucose + oxygen
So, if the plants was exposed to more intense light and The plant absorbed more carbon dioxide, then the glucose level in the plants get increased.
Hence, First and third options are correct.
Answer:
The plant was exposed to more intense light.
The plant absorbed more carbon dioxide.
Explanation:
In the middle of taking that test ;)
Students planted 100 seeds in two different plots of land on the same day. Both plots of land measured 10 square meters. They recorded data for one year. Based on the data in the table, the taller height of the population of plant number two is most likely the result of which of the following factors?
this is the table:
1. oval, black 98 1264 6.6 31
2. round, white 99 1198 6.8 121
A. Success rate of the sprouts
B. The average local rainfall
C. pH of soil in the area
D. Genetic factors of the plants
Answer:
C
Explanation:
they are no were close to Mr. beast, but the ph. of the soil can very in the soil one square yard can be really acidic wile next to it can be neutral measure the ph. from both plots of land compare them and use that info to aid your research
Could someone explain (simply) the law of universal gravitation?
Answer:
Explanation:
In its simplest form, Newton's law of universal gravitation states that bodies with mass attract each other with a force that varies directly as the product of their masses and inversely as the square of the distance between them.
Carbon can be suspended for hundreds
or even millions of years in which of the following
Carbon can be suspended for hundreds or even millions of years in sedimentary rocks.
Option A is correct.
How do we explain?When plants and animals die, their remains can be buried in sediment. Over time, the sediment compresses and turns into rock, trapping the carbon inside and is how carbon gets trapped in sedimentary rocks.
Sedimentary rocks are the most abundant type of rock on Earth. They cover about 75% of the Earth's land surface and are formed when layers of sediment are deposited and compacted over time.
Organic sedimentary rocks are formed from the remains of plants and animals. Examples of organic sedimentary rocks include coal and petroleum.
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completeb question:
Carbon can be suspended for hundreds
or even millions of years in which of the following:
A. sedimentary rocks.
B. Igneous rick
C. Metamorphic Rock
PLZ HURRY I DONT WANT AN F. which personal choice slows the cycling of water into the atmosphere?
A. planting trees in a park.
B. choosing reusable products
C. growing a vegetable and flower garden
D. buying products made from rain forest trees
Answer:
The answer is D
Explanation: The less trees there are the more likely there will be a drought.
Personal choice slows the cycling of water into the atmosphere by buying products made from rain forest trees, which is option D, as rain forests play a crucial role in the water cycle, and the more plants, the higher the water content in the atmosphere.
What is an atmosphere?The cycling of water in the atmosphere is a natural process that involves the movement of water between the Earth's surface and the atmosphere and back again. This process is crucial for the maintenance of life on Earth, as it helps to distribute water to different parts of the planet and supports the growth of plants, animals, and humans. The more disturbance there is in the atmosphere, the more the water cycle is disturbed.
Hence, personal choice slows the cycling of water into the atmosphere by buying products made from rain forest trees, which is option D, as rain forests play a crucial role in the water cycle, and the more plants, the higher the water content in the atmosphere.
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If Straight leaves are dominant to curly and Yellow flowers are dominant to red, what would the genotype of a homozygous straight leaf, heterozygous yellow flowering plant look like?
Which of the following has the element correctly matched with its description?
Hello. This question is incomplete. It is important that you always provide all the information so that your question can be answered the way you deserve.
The full question is:
"Which of the following has the element correctly matched with its description?
The duodenum is the first section of the small intestine and contains Peyer's patches.
The bile moves upward and backward and pushes the bolus
The bones attaches the liver to the anterior abdominal wall
Tongue toxins prevent water absorption in the large intestine"
Answer:
The duodenum is the first section of the small intestine and contains Peyer's patches.
Explanation:
It is true that the duodenum is the first section of the small intestine where Peyer's patches are located. The duodenum is the place where most of the entire digestive process occurs, in addition, it allows food to mix with bile and digestive juices.
Peyer's patches play an important role in immunological surveillance during digestive processes. This is because it allows the destruction of possible pathogens associated with food, or that interfere with digestion in some way.
How long did dinosaur live on earth?
Final answer:
Dinosaurs first appeared about 225 million years ago and thrived until about 65 million years ago, when they went extinct due to a mass extinction event. They spanned the Mesozoic Era, known as the Age of Dinosaurs, and today, birds are their closest living descendants.
Explanation:
Duration of Dinosaurs on Earth
Dinosaurs first appeared approximately 225 million years ago, during a period known as the Triassic. These magnificent creatures roamed the Earth during the Mesozoic Era, often referred to as the Age of Dinosaurs, which is divided into three periods: Triassic, Jurassic, and Cretaceous. Their reign lasted until about 65 million years ago, marking the end of the Cretaceous period, when they went extinct due to a mass extinction event. This catastrophic occurrence, likely caused by a combination of asteroid impact and volcanic activity, heralded the rise of mammals and eventually led to the existence of humans.
The first dinosaurs began to evolve during the Mesozoic Era, which lasted from about 245 million years ago until their extinction at the end of the Cretaceous period. Throughout the Mesozoic Era, dinosaurs evolved and diversified into a wide array of species, culminating in some of the most impressive creatures to ever walk the Earth, such as the Tyrannosaurus Rex.
After the asteroid impact that created the Chicxulub crater and triggered volcanic eruptions, the once-dominant dinosaurs went extinct, and their disappearance opened up ecological niches for mammals to expand and diversify into the myriad forms we see today. The only remaining descendants of the dinosaurs are the birds, which have thrived and diversified into thousands of species around the globe.
How many daughter cells result from a parent cell in meiosis?
Answer:4 haploid daughter cells
Explanation:
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. During reproduction, when the sperm and egg unite to form a single cell, the number of chromosomes is restored in the offspring.
Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome. The parent cell undergoes one round of DNA replication followed by two separate cycles of nuclear division. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.
NEED HELP FAST. I know it’s seems easy, I’m just not sure what the answer is
The universe contains..
A) few black holes
B) billions of galaxies
C) millions of stars
D) few wavelengths
Answer:
B
Explanation:
Which of the following processes returns carbon to the atmosphere?
Answer:
Respiration is a process in which carbon is released in the atmosphere in the form of carbondioxide.
Explanation:
Respiration is energy generating process. In this process, food substance which contains glucose molecule is broken down in the mitochondria of the cell which releases carbondioxide, water and energy in the form of Adenine tri phosphate (ATP). Energy is used by the cell in different processes and activities while Carbondioxode gas is released in the atmosphere.
Explain how humans react and adapt to the limited availability of water
NEED ASAP
Answer:
One of the easiest things people can do when water is scarce is limit its use. for example take shorter showers, water your lawns less
Explanation:
Answer:One of the easiest things people can do when water is scarce is limit its use. for example take shorter showers, water your lawns less
Explanation:
Here are a list of events that involve changes to genotype and phenotype. Arrange these events in sequential order, from first to last.
The altered gene is transcribed into mRNA.
The sequence of nucleotides changes in a gene.
The sequence of amino acids is altered in a protein.
The function of the protein is altered, affecting phenotype.
Answer:
The sequence of nucleotides changes in a gene.
The altered gene is transcribed into mRNA.
The sequence of amino acids is altered in a protein.
The function of the protein is altered, affecting phenotype.
Explanation:
To see a change in a phenotype, the negative change (mutation) should occur in the gene first. Neutral mutations would not lead to a change in phenotype because it doesn't change the type of amino acid essentially. This means that, the first step would be the change in the gene itself. Then, the gene would be translated to mRNA. Then, the mRNA will instruct ribosomes to make an altered protein. Finally, the expression of protein due to different amino acid would lead to a different phenotype.
Answer the following questions
At the Hardy Weinberg equation. For each question
assume that just two alleles of a gene exist in the population. A1 codes for purple leaves, has A frequency of 0.7 and is dominant. A2, codes for white leaves, and has a frequency of 0.3.
14. a) If p is the frequency of A1 and q is the frequency of A2, what equation describes the
relationship between p and q? Explain your answer. (2 points)
b) Describe the frequencies of alleles A1, and A2 in the population using both decimals and
percents. (1 point)
Answer:
a) The equation describes the relationship between p and q is p + q = 1 for allelic frequencies
b) The frequencies of alleles A1 in decimals is 0.7 and in percents is 70%.
The frequencies of alleles A2 in decimals is 0.3 and in percents is 30%.
Explanation:
According to Hardy-Weinberg, the allelic frequencies in a locus are represented as p and q, referring to the allelic dominant or recessive forms. The genotypic frequencies after one generation are p² (Homozygous dominant), 2pq (Heterozygous), q² (Homozygous recessive). Populations in H-W equilibrium will get the same allelic frequencies generation after generation. The sum of these allelic frequencies equals 1, this is p + q = 1.
In the same way, the sum of genotypic frequencies equals 1, this is
p2 + 2pq + q2 = 1
Being
p the dominant allelic frequency, q the recessive allelic frequency, p²the homozygous dominant genotypic frequency q² the homozygous recessive genotypic frequency2pq the heterozygous genotypic frequencyIn the exposed example,
A1 codes for purple leaves, has a frequency of 0.7 and is dominant. A2 codes for white leaves, has a frequency of 0.3 and is recessive.According to this equation: p + q = 1.
0.7 + 0.3 = 1
A1A1= p²= 0.7² = 0.49
A2A2= q² = 0.3² = 0.09
A1A2 = 2pq = 2 x 0.7 x 0.3 = 0.42
According to this equation: p² + 2pq + q² = 1
0.49 + 0.42 + 0.09 = 1
The frequencies of alleles A1 in decimals is 0.7 and in percents is 70%. The frequencies of alleles A2 in decimals is 0.3 and in percents is 30%.The frequencies of the A1 and A2 alleles in the Hardy-Weinberg equilibrium is described by the equation p + q = 1, with p being the frequency of A1 (0.7 or 70%) and q being the frequency of A2 (0.3 or 30%).
Explanation:The relationship between p (the frequency of A1) and q (the frequency of A2) in the Hardy-Weinberg equilibrium can be described by the equation p + q = 1. This equation states that the sum of the frequencies of all alleles for a particular gene in a population is equal to 1. In other words, it accounts for 100% of the alleles in the population.
By using the provided frequencies, you can see that this equation holds true as 0.7 (the frequency of A1) + 0.3 (the frequency of A2) equals 1, or 100%. Therefore, the frequencies of alleles A1 and A2 in the population are 0.7 and 0.3 as decimals, and 70% and 30% as percents, respectively.
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Which storm can reach a greater velocity hurricanes or tornadoes?
Answer:
Hurricane
Explanation:
Storm winds arrive at 74 mph or quicker. Meteorologists state the call relies upon what you're contrasting. While tornadoes might be increasingly exceptional tempests, tropical storms will in general stick around any longer, spread more ground and cause more harm.
10. Chemical changes result in new substances, but physical changes do not. Which process is an example of
a chemical change?
A. chopping a tree
B. cooking a steak
C. heating a cup of tea
D. drying clothes in the dryer
Answer: cooking a steak
Explanation: Cooking a steak actually changes the chemical structure of the steak. This is not the case for the other answers as the source material still holds the same properties
Final answer:
b) Cooking a steak is an example of a chemical change because it alters the molecular structure of the steak by denaturing proteins and creating new substances. Other options like chopping a tree and heating tea are physical changes and don't result in new substances.
Explanation:
An example of a chemical change is option B, cooking a steak. This is because when you cook a steak, the heat causes the proteins in the meat to denature and undergo a Maillard reaction, resulting in changes in color, flavor, and texture. These changes indicate that new substances are being created, which is characteristic of a chemical change.
By contrast, chopping a tree would be a physical change because it merely involves changing the shape or state of the tree without altering its underlying molecular structure. Heating a cup of tea and drying clothes in the dryer are also physical changes, as they involve changes in temperature or state of water (evaporation) but do not result in new substances.
Using the example of burning a candle, the wax undergoes a chemical reaction, transforming it into carbon dioxide and water vapor which means it's a chemical change. Similarly, the burning of gasoline in a car engine or a furnace is a chemical change because it results in the formation of new substances, such as carbon dioxide and water.
What must be true for Hardy-Weinberg equilibrium to occur?
A. Some alleles must give an advantage.
B. Mating must happen randomly.
C. Mutations must occur in each generation.
D. The population must be small.
Answer:
B. Mating must happening randomly
Explanation:
hope this helps! :)
Matting must happen randomly in the population for Hardy- Weinberg equilibrium to occur. Therefore, option "B" is correct.
What is Hardy- Weinberg equilibrium?
Hardy- Weinberg equilibrium states that when in a random matting large population, genotype and the allele frequencies remain constant as evolutionary changes are absent. Influences of other factors are inclusive such as genetic drift, mate selection, bottleneck effect, and founder’s effect.
[tex]p2 + q2 = p2 +q2+2pq[/tex] is known as the Hardy- Weinberg equilibrium equation.
The assumption of the Hardy- Weinberg equilibrium is matting should be sexual only, random matting, and organisms should be diploid.
For the application of the Hardy- Weinberg equilibrium, random matting should stake place.
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which resource is nonrenewable?
A. Sunlight
B. Timber
C. Coal
D. Wind
The nonrenewable resource among the options provided is coal and the correct option is option C.
Coal is a fossil fuel that is formed over millions of years from the remains of plants and is extracted from the Earth's crust. Once coal is extracted and used for energy production, it cannot be easily replaced or regenerated within a short time frame.
Unlike sunlight (option A) and wind (option D), which are renewable sources of energy, coal is a finite resource that is being depleted faster than it can be naturally replenished.
Timber (option B) can be considered a renewable resource if harvested sustainably, as trees can be replanted and regrown.
Thus, the ideal selection is option C.
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Which job must enzymes do before replication can begin?
Answer:
Before they replicate the two DNA strands need to separate from each other.
Explanation:
How does fertilizer usage, soil degradation, and deforestation all tie in together?
Answer:
Fertilizer usage is linked to the agricultural practice with an aim to enhance the crop yield. Inadequae use of fertilizers however causes soil degradation because these practices overlook the spatial differences in soil fertility status in agricultrual systems. Specifically, not all soils require fertilizer application at the same levels. A recommended approach is that, initially, there should be a proper study of limited nutrients in the soil and thereon only those nutrients should be given at controlled concentrations, which are limited. A major reason is that high concentration of specific nutrients would affect the bioavailability of other nutrients in the long run and could also lead to soil degradation (by affecting soil health status). The microbial population in the soil could also change that are typical for essential biogeochemical cycles. This is a very critical aspect in future future agriculture and to preserve the environment. Deforestation is a condition when the plants are cut excessively for agricultural purposes. If soil degradation continues as discussed above, it would put a reduce the overall proportion of agricultrual land and cutting of naturally grown forests would be required. This would turn the green zones into agricultural zones (in future). This is a pressure on ecosystem and the consequences can be really harsh.
Which is the second smallest level of organization?
Answer: Tissues!!!
Explanation:
Answer: tissues
Explanation:
All of the following types of information can be learned from the fossil record EXCEPT–
the anatomy of various species.
the common ancestry of organisms.
the future evolution of major groups.
the geographical range of populations.
The fossil record provides extensive information about past life, including species' anatomy, common ancestries, and geographical ranges, but it cannot predict the future evolution of major groups.
Explanation:The fossil record is a rich source of information about the past, providing insights into the anatomy of various species, the common ancestry of organisms, and the geographical range of populations. However, one thing the fossil record cannot offer is predictions about the future evolution of major groups.
This is because the fossil record documents life's history on Earth, showing the progression and changes in species over millions of years, but it doesn't project into the future.
For instance, detailed records showcase the evolution of humans and horses, and comparisons like the similar morphology of whale flippers to bird and mammal appendages support the theory of common ancestry.
Final answer:
The fossil record informs us about past anatomies, b) common ancestries, and d) population ranges, but it does not predict future evolution of major groups.
Explanation:
The fossil record provides a wealth of information about the past, including the anatomy of extinct species, the b) common ancestry of organisms, and d) the geographical range of populations. However, what it cannot project is the future evolution of major groups, as evolution is an ongoing process influenced by numerous unpredictable factors. Fossils do show a progression of evolution over time, revealing changes in anatomy and suggesting evolutionary connections among species, such as the similar morphology of whale flippers and appendages of birds and mammals, which implies a common ancestor.
what is a Epithelial tissue
Answer:
Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception