The function of the digestive system that involves membrane transport of digested molecules from the gastrointestinal tract into the blood or lymph is called:________
Answers
The function of the digestive system that involves membrane transport of digested molecules from the gastrointestinal tract into the blood or lymph is called absorption.
The absorption process in the digestive system refers to the transportation of broken-down nutrients from the gastrointestinal tract into the bloodstream.
After food is broken down into smaller molecules by the digestive system, absorption occurs in the small intestine where nutrients such as carbohydrates, proteins, and fats are transported across the intestinal wall and into the bloodstream.
Water and other molecules are also absorbed in the large intestine. These absorbed nutrients and molecules are then transported to different parts of the body for use in various cellular functions.
In addition to absorption, the digestive system performs several other functions that are essential for the breakdown and processing of food. Here are some examples:
Ingestion: The process of taking in food through the mouth is called ingestion. This is the first step in the digestive process.
Mechanical digestion: The physical breakdown of food into smaller pieces is called mechanical digestion. This process starts in the mouth where food is chewed and mixed with saliva, and continues in the stomach where muscular contractions break down the food further.
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Absorption is the function of the digestive system that transports digested molecules from the gastrointestinal tract into the blood or lymph. It occurs in the small intestine and employs methods like passive diffusion, facilitated diffusion, active transport, and endocytosis.
The function of the digestive system that involves membrane transport of digested molecules from the gastrointestinal tract into the blood or lymph is called absorption. Absorption occurs primarily in the small intestine, where nutrients from digested molecules cross cell membranes to enter the bloodstream or the lymphatic system. There are several absorption methods including passive diffusion, facilitated diffusion, active transport, and endocytosis. Regardless of the method, the overall goal of absorption is the transfer of molecules from the digestive tract into the body's internal environment.
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Related Questions
Which is of the following is necessary for natural selection? 1. There must be a shortage of food 2. There must be a change in the environment, causing individuals to change 3. There must be some genetic differences among the individuals of a species 4. all of the above
Answers
Answer:
It's 3!
Explanation:
There must be genetic differences so the best fitted organisms will survive. If they were all the same then no one would be best fitted and Natural Selection wouldn't be able to occur
It's not 1 because a food shortage isn't required, there's always competition for food sources
It's not 2 because there doesn't need to be a change in the environment for natural selection, just for evolution.
And it can't be 4 if 1 and 2 are wrong!
Hope this helped!
the null hypothesis and alternative hypothesis, when combined, cover the entire sample space of the parameter of interest. true or false.
Answers
The given statement is False, the null hypothesis and alternative hypothesis do not collectively cover the entire sample space of the parameter of interest.
Do the null hypothesis and alternative hypothesis cover the entire sample space of the parameter of interest?The null hypothesis and alternative hypothesis do not collectively cover the entire sample space of the parameter of interest.
In hypothesis testing, the null hypothesis (H0) represents the default or no effect assumption, while the alternative hypothesis (Ha) states the specific effect or relationship that the researcher wants to investigate.
These hypotheses are mutually exclusive and collectively exhaust the possibilities for the parameter of interest.
However, it is important to note that the null hypothesis does not cover the entire sample space, as it only represents the absence of an effect or difference.
The alternative hypothesis, on the other hand, specifies a particular effect or difference that is being tested against the null hypothesis.
Thus, the two hypotheses together cover all the possible outcomes but not the entire sample space of the parameter being studied.
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Please help ASAP !!
Answers
Answer:
1. Black
2. Yellow
3. Bb (or BB)
4. bb
Explanation:
So they breed two black fur coats and get 75% black fur. This means that Bb is 75% too, making it black fur. The 25% (recessive) would be yellow.
many b vitamins function as , which bind to enzymes to promote their activity. a) provitamins b) transport proteins c) small intestines d) mouth
Answers
The correct answer to your question is option (b) transport proteins. Many B vitamins function as coenzymes, which are organic molecules that bind to enzymes to promote their activity.
Coenzymes work together with enzymes to catalyze various biochemical reactions in the body. In order to function properly, these coenzymes must be transported to the sites of enzyme activity by specific transport proteins.
Without these transport proteins, the coenzymes would not be able to effectively bind to their target enzymes and promote their activity.
So, the role of transport proteins is crucial for the proper functioning of many B vitamins in the body.
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The ________________________ of light as it travels from one medium to another
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The refraction of light occurs as it travels from one medium to another. The refraction of light refers to its bending or change in direction as it passes from one medium to another with a different optical density.
Refraction is the phenomenon where light bends or changes direction as it passes from one medium to another with a different optical density. When light encounters a boundary between two mediums, such as air and water or air and glass, its speed and direction can be altered. This change in speed and direction is caused by the difference in the refractive indices of the two mediums.
The refractive index of a medium is a measure of how much the speed of light is reduced when it passes through that medium compared to its speed in a vacuum. When light travels from a medium with a lower refractive index to a medium with a higher refractive index, it bends towards the normal (an imaginary line perpendicular to the surface). Conversely, when light travels from a medium with a higher refractive index to a medium with a lower refractive index, it bends away from the normal.
Refraction is responsible for various optical phenomena, such as the bending of light in lenses, the formation of rainbows, and the apparent displacement of objects when viewed through water.
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What relationship does the body mass index describe?
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Weight in kilograms divided by the square of height in meters (kg/m2) yields the body mass index (BMI), which measures weight adjusted for height.
What connection between BMI and male body image is frequently noticed?Negative body image was highly connected with BMI. Participants who were overweight or obese expressed negative body image at much higher rates than those who were normal weight or underweight.
Does the relationship between BMI and body fat exist?However, because it does not directly measure body fat, BMI is not a precise measurement. As bone and muscle have a higher density than fat, BMI can either overestimate body fat in athletes with high bone density and muscle mass or underestimate it in older individuals with low bone density and muscle mass.
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What is the function of carbon dioxide in the atmosphere?
Answers
Answer:
To warm up the Earth.
Explanation:
Carbon dioxide in the atmosphere warms the planet causing climate change.
for animals housed outdoors, any shelters provided to them should be:
Answers
Animals housed outdoors should be provided with shelters that offer protection from the elements and promote their well-being.
In biology, the term "animal" refers to a diverse group of multicellular organisms that belong to the kingdom Animalia. Providing shelters for animals housed outdoors is essential to ensure their welfare and safety. These shelters should protect them from extreme weather conditions such as excessive heat, cold, rain, or snow. The shelters should be designed to offer shade and insulation, preventing the animals from overheating or becoming too cold. They should also be structurally sound and resistant to harsh weather, providing a secure environment for the animals.
Additionally, the shelters should be spacious enough to accommodate the animals comfortably, allowing them to move around and lie down without restrictions. Adequate ventilation is also crucial to maintain good air quality and prevent the buildup of moisture or odours inside the shelter. Overall, shelters for animals housed outdoors should prioritize their protection, comfort, and well-being.
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Tell me how many chromosomes do you have?
//EZ question//
Answers
23 pairs (46 total)
True or False. Cellulose is broken down in the human digestive system into glucose molecules.
Answers
Answer:
Complex carbohydrates contain longer chains of sugar molecules than simple carbohydrates. The body converts these sugar molecules into glucose, which it uses for energy. As complex carbohydrates have longer chains, they take longer to break down and provide more lasting energy in the body than simple carbohydrates.
Explanation:
Cellulose is a type of carbohydrate, which cannot be broken down by the human digestive system. Carbohydrates like glucose are the stored form of energy in humans.
The given statement is False.
Carbohydrates are biomolecules, which are made up of long chains of monomers or disaccharides.
The human digestive system break downs the complex carbohydrates into simpler forms, such as glucose. For example, the enzymes such as lactase and maltase break down the complex carbohydrates sucrose and lactose.
Cellulose is also a type of complex carbohydrate, which cannot be digested by the human digestive system. The human digestive system lacks the enzyme cellulase, which is responsible for the breakdown of cellulose.
Therefore, the given statement is False.
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magma is a mixture of diffrent minerals or a rock?
Answers
Answer:
It is rock. hope it helps
Explanation:
Answer:
Magma is molten rock found below the earth's surface.so magma is a rock
Explanation:
i hope this will help you :)
Cells are made up of molecules. Why then do we say that the structural unit of a living thing is a cell and not a molecule?
Answers
Answer:
Molecule is a non- living structure, but they are responsible for assembling in various ways to create the parts of cells.
Explanation:
Molecules cannot function independently whereas when they combine they give rise to a functional unit called cell. This is the reason why cell is called a functional unit of life and not molecules.
In a newspaper editorial, a writer states that research on human embryonic stem cells is valuable and worthwhile. Which describes the most common argument against the writer's statement?A.In a scientific argument, some physicians argue that stem cells are not likely to be part of any beneficial application or medical treatment.B.In an economic argument, some experts argue that the benefits of stem cells are not worth the high cost of developing and implementing the research.C.In a scientific argument, some researchers argue that the goals of stem cell research would be easier to achieve by other means.D.In an ethical argument, some people argue that human embryonic cells should be protected.E.In a philosophical argument, some people argue that stem cell therapy would change the personality or identity of the person receiving it.
Answers
In my experience the answer would be:
"In an ethical argument, some people argue that human embryonic cells should be protected."
Because as with abortion, the general idea is that stem cells or embryos have life and must be protected. Therefore, there are many people against stem cell therapies. However, in the scientific community, stem cells are not considered conscious organisms.
If You Had Three Wishes, What Would You Wish For?
For my first wish i would wish to have endless wishes then i will wish whatever i want
Answers
Answer:
Both we have the same idea. I also have thought about that before. lol
Answer:
total freedom, Be 21 forever(lol) and thats it
Explanation:
Biotic potential is anything that increases
the survivability of a population. Biotic potential can be___?
Answers
Answer:
high and low
Explanation:
The gravitational force that pulls objects toward Earth is greater than the force that pulls objects toward the moon. Which property of matter is affected by this difference in gravitational force?
Answers
Answer:
Gravity
Explanation:
suppose polymerase chain reaction (pcr) is used to amplify a single dna marker on human chromosome 21. further suppose that a couple who have a child with down syndrome (trisomy 21) is examined for this marker. the mother has marker alleles of 310 and 380 bp. her mate has marker alleles of 290 and 340 bp. part a what pcr bands are present in their child with down syndrome if nondisjunction occurred in maternal meiosis i?
Answers
The PCR bands in the child with Down Syndrome resulting from maternal meiosis I nondisjunction would be 310 bp, 380 bp, and 290 bp.
If the mother's nondisjunction occurred during meiosis I, it would result in the formation of an egg with two copies of chromosome 21 and no copies in the other egg. During fertilization, the father's sperm carrying one copy of chromosome 21 would combine with the egg containing two copies, resulting in a zygote with three copies of chromosome 21, leading to Down Syndrome.
The PCR amplification of the DNA marker on chromosome 21 would yield two bands in the child with Down Syndrome. One band would correspond to the marker alleles inherited from the mother, which would be larger than the alleles in the father.
Therefore, the child would have two bands corresponding to 310 bp and 380 bp, inherited from the mother's egg with two copies of chromosome 21. The other band would correspond to the father's marker allele, which would be smaller than the maternal alleles. Therefore, the child would have one band corresponding to 290 bp, inherited from the father's sperm carrying one copy of chromosome 21.
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Match the parts of the kelp plant to the given structure.
Answers
Note that the labeled structures of the Kelp Plant is attached accordingly.
What is Kelp?Kelp is a big brown algae that lives in chilly, shallow waters near the beach. They form thick clusters, much like a forest on earth. Thousands of fish, invertebrates, and marine mammal species rely on these underwater kelp towers for food and refuge.
Marine kelp is a popular sea plant due to its numerous health advantages and high nutritional content, however it is not the same as seaweed. Seaweed is a name that can refer to a variety of marine-based plant and algae species. However, marine kelp is more particular. It refers to the most extensive subgroup of seaweed.
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Observe the activity in your classroom. You can observe people, objects, and parts of your actual classroom as you
begin to notice changes in matter. Collect data for two examples of changes in matter. Use the Changes in Matter
observation questions to determine if your examples are physical or chemical changes.
Your answer should include the following: two examples, the type of change for each, and how the examples were
formed. You can use this format:
Example 1:
Type of Change:
How examples were formed:
Answers
A transducer is a device that transforms energy from one type to another, and microphones fall under this category.
Sound waves' acoustic energy is transformed into electrical energy via microphones (the audio signal). The way each type of microphone converts energy varies, yet they all have this in common.
Change of type:
Developmental - First order or gradual; it might be planned or emergent.
Transitional: Aims to bring about a known intended state that differs from the one that currently exists.
Radical or second-order in nature, transformational.
The environment around us is always changing, including the humidity, pressure, and temperature. These many climate shifts are all connected. For instance, the moisture in our environment drops as the temperature rises.
The complete question:
bserve the activity in your classroom. You can observe people, objects, and parts of your actual classroom as you
begin to notice changes in matter. Collect data for two examples of changes in matter. Use the Changes in Matter
observation questions to determine if your examples are physical or chemical changes.
Your answer should include the following: two examples, the type of change for each, and how the examples were
formed. You can use this format:
Example 1:
Type of Change:
Example 2:
How examples were formed:
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N diploid wildflowers from a very large population are transplanted to a location in which they are reproductively isolated from the source population. Their heterozygosity is measured every generation. After 20 generations of random mating (and a constant number of offspring in each generation, N ), the heterozygosity of the isolated wildflowers is half of what it was at the start. What is your best guess of the value of N ? (Hint, if x≈0, then ln(1+x)≈x.) 3) a) A population with discrete generations experiences occasional surges and crashes in population size. In a fraction of generations r the population size is N
1
, and in the remaining 1− r generations the population size is N
2
. Adapt the formula for N
e
with varying population size,
N
1
1
+
N
2
1
+⋯+
N
k
1
k
(for k generations, with N
j
the population size in generation j ) to write an expression for the long-term effective population size of the population assuming that it meets all other Wright-Fisher assumptions. b) In the scenario in part (a), compute the effective population size if N
1
=1000, and N
2
= 1,000,000, and r=0.5. Repeat the calculation changing r to .1 and .01.
Answers
N = 1.386 Ne. and the value of N is a little over 100. After 20 generations of random mating, the heterozygosity of the isolated wildflowers is half of what it was at the start. The effective population size formula that can be used is N e = (1/2H) 2N / (2NH - H).
According to the given statement, Diploid wildflowers from a large population are transplanted to a location where they are reproductively isolated from the original population. Their heterozygosity is measured each generation. After 20 generations of random mating, their heterozygosity is half of what it was at the start. The value of N must be estimated. We know that the effective population size is the size of the population that would have the same rate of genetic drift as the actual population.
The effective population size (N e) can be expressed as shown below:
Ne = 4N 1 N 2 / (N1 + N 2) In this formula, N 1 and N 2 are the number of organisms in the two populations.
Thus, after 20 generations of random mating, the heterozygosity of the isolated wildflowers is half of what it was at the start, indicating that: Heterozygosity after 20 generations = 1/2
Heterozygosity at the start or Heterozygosity at the start = 2 (Heterozygosity after 20 generations). The effective population size formula that can be used here is:
Ne = (1/2H) 2N / (2NH - H) Where H is the heterozygosity at the beginning and N is the effective population size.
We can use the Hint given in the question to find that the above equation is approximately:
Ne = (1/4) N/ ln (2) So, N/ ln (2) = 4Ne or N = 4Ne ln (2) ≈ 1.386NeThus, N ≈ 1.386Ne.
The value of N is a little over 100, which is what we can expect.
After 20 generations of random mating, the heterozygosity of the isolated wildflowers is half of what it was at the start. Therefore, the effective population size formula that can be used is N e= (1/2H) 2N / (2NH - H).
Thus, N ≈ 1.386 Ne. and the value of N is a little over 100.
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Can fossil conservation take place on asphalt?
Answers
Answer:
nope
Explanation:
suppose you find a paper clip stuck to a magnet you pull off the paper clip and move it to a short distance away from the magnet what happened to the magnetic Force between the magnet and the paper clip A. it disappears B. it gets stronger C. it gets weaker D.it stays the same
Answers
Answer: C
Explanation: it gets weaker because there not as close together
these visual pathway cells have high temporal resolution but low spatial resolution
Answers
The visual pathway cells that have high temporal resolution but low spatial resolution are the rod cells in the retina.
Rod cells are specialized photoreceptor cells that are responsible for detecting low levels of light and are primarily used in low-light conditions such as at night or in dimly lit environments.
Rod cells have high temporal resolution, meaning that they are able to detect changes in light quickly and respond rapidly to changes in the visual environment.
However, they have low spatial resolution, which means that they are not able to distinguish fine details and are less sensitive to color than cone cells.
In bright light conditions, cone cells become the dominant photoreceptor cells and provide high spatial resolution and color vision, while rod cells become less sensitive and contribute less to visual processing.
Thus, these visual pathway cells have high temporal resolution but low spatial resolution.
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True or false On average, about 10 percent of the energy available within one trophic level is transferred to the next trophic level.
Answers
Answer:
True
Explanation:
energy can be caused by the sun and water and wire and battery.
How can these atoms be recycled into other compounds ? Study island
Answers
Answer:
The carbon, hydrogen, and oxygen atoms can rearrange in different ways to make new types of compounds. During cellular respiration, cells convert oxygen and glucose into carbon dioxide, water, and energy.
Explanation:
HELP ME PLEASE IM BEING TIMED
Answers
Answer:
Carnivore - Animals
Herbivore - Plants
Parasite - Live Host
Omnivore - Plants/Animals
Filter Feeder - Filter small organisms from water
Detrivore - Decay Plant/Animal Material
Explanation:
Feeder groups are categories of organisms based on their primary source of food. The most common feeder groups are: carnivores, herbivores, omnivores, insectivores, frugivores, granivores, nectarivores, planktivores, and detritivores. Carnivores feed primarily on animal tissue, herbivores feed primarily on plants, and omnivores feed on both animal and plant tissue. Insectivores feed primarily on insects, frugivores feed primarily on fruits, granivores feed primarily on grains, nectarivores feed primarily on nectar, and planktivores filter small organisms from water. Detritivores feed primarily on decaying plant or animal material. Some organisms, such as parasites, feed on a live host organism. It is important to understand these feeder groups and their associated diets in order to better understand the ecological roles and relationships of different organisms in their ecosystems.
Briefly explain, in general terms, how of the protein components in root cells come to be different from the proteins found in leaf cells.
Answers
To up take mineral ions and water molecules from the soil, root hair cells have special protein carriers located in their outer membrane. These cells primarily perform the absorption function.
What are the functions of proteins?Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues.
Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.
Proteins serve many functions in cells. They act as enzymes that catalyze chemical reactions, provide structural support, regulate the passage of substances across the cell membrane, protect against disease, and coordinate cell signaling pathways.
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. sars-cov-2 spike-specific t-cell responses in patients with b-cell depletion who received chimeric antigen
Answers
SARS-CoV-2 is the virus responsible for causing COVID-19. Spike-specific T-cell responses refer to the immune response generated by T-cells specifically targeting the spike protein of the virus. B-cell depletion is a medical intervention that involves reducing the number of B-cells, a type of white blood cell involved in producing antibodies. Chimeric antigen refers to a synthetic molecule that combines elements of different antigens.
Research has shown that patients with B-cell depletion who received chimeric antigen therapy may still develop SARS-CoV-2 spike-specific T-cell responses. These T-cell responses are important for the immune system's ability to recognize and eliminate the virus. It is crucial to note that while T-cell responses are significant, the presence of antibodies produced by B-cells also plays a crucial role in neutralizing the virus.
Overall, this research suggests that despite B-cell depletion, patients can still mount an effective T-cell response against SARS-CoV-2, which could contribute to their immune defense against the virus.
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an extension of the green fluorescent protein technique led to the development of:
Answers
An extension of the green fluorescent protein (GFP) technique led to the development of optogenetics.
Optogenetics is a technique that uses light to control the activity of cells in living tissue. It is a powerful tool for studying the function of neurons and other cells in the brain.
GFP is a protein that is naturally found in jellyfish. It glows green when exposed to light. Scientists have engineered GFP to be expressed in other cells, such as neurons. This allows scientists to visualize the activity of neurons in living tissue.
Optogenetics works by combining GFP with light-sensitive proteins. When these proteins are exposed to light, they change their shape and open or close ion channels. This can change the electrical activity of the cell.
Optogenetics has been used to study a variety of brain functions, including learning, memory, and vision. It has also been used to develop new treatments for neurological disorders, such as blindness and Parkinson's disease.
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explain the speed–accuracy trade-off in the skill of catching with adults over the age of 65. what would coincidence-anticipation research tell us about catching in older adults?
Answers
The speed-accuracy trade-off theory states that individuals need to decide how much emphasis to place on the speed or accuracy of a movement to achieve a particular goal.
The speed-accuracy trade-off theory states that individuals need to decide how much emphasis to place on the speed or accuracy of a movement to achieve a particular goal. With the task of catching, it is important to find the balance between speed and accuracy to successfully catch an object, but this may change based on factors such as age. In adults over the age of 65, catching may become more challenging due to changes in sensory processing and motor control, which can affect the speed-accuracy trade-off.
Coincidence-anticipation research is a type of research that focuses on the ability to predict the future location of a moving object and the ability to respond accordingly. With older adults, research has shown that their ability to accurately anticipate the trajectory of a moving object may decline, making catching more challenging. This decline is attributed to changes in cognitive processing, such as slowed reaction times and difficulty with visual tracking.
Furthermore, research has shown that older adults may rely more on visual information rather than proprioceptive feedback (internal awareness of the body's position and movement) when catching, which can also affect the speed-accuracy trade-off. In summary, the speed-accuracy trade-off theory applies to catching in older adults, but changes in sensory and cognitive processing can make it more challenging to achieve the right balance. Coincidence-anticipation research can help identify these changes and inform interventions to improve catching ability in older adults.
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