Endothelial cells lining blood vessels can contain enzymes on their surface to convert hormones into their active form or degrade other signaling molecules. True or False?
Answers
The statement is True. It is because endothelial cells lining blood vessels can contain enzymes on their surface that are involved in the metabolism of hormones and other signaling molecules, and play important roles in regulating physiological processes.
Endothelial cells are specialized cells that form the inner lining of blood vessels. They play an essential role in regulating blood flow, blood pressure, and the delivery of oxygen and nutrients to the tissues. Endothelial cells have been found to contain various enzymes on their surface that can convert inactive hormones into their active form or degrade other signaling molecules. For example, endothelial cells in the lungs contain the enzyme angiotensin-converting enzyme (ACE), which converts the hormone angiotensin I into angiotensin II, a potent vasoconstrictor that helps regulate blood pressure.
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Related Questions
Why did heating the water affect the surface? I need help my mother is making me di science and im so confused :( I doubt this is biology..
Answers
Changes in the surface temperature heat or cool the air above, which leads to air movement (wind). Solar heating of the Earth's surface is uneven because land heats faster than water, and this causes air to warm, expand and rise over land while it cools and sinks over the cooler surfaces.
why do we need to follow the manual handling procedures and techniques?
Answers
In pea plants sead color green is dominant to yellow and seed shape round is dominant to wrinkled. In di hybrid cross produces 800 seads in F2 generation.
Out of 800 seeds how many will be Green and Round
a.450
b.150
c.50
d.400
Answers
In the illustrated dihybrid cross, out of 800 seeds, 450 would come out green and round.
Dihybrid crossAssuming the seed color allele is represented by A and the seed shape allele is represented by B.
At F1: AABB x aabb
AaBb
At F2: AaBb x AaBb
Genotype ratio of Offspring:
A_B_: green and round = 9
aaB_: yellow and round = 3
A_bb: green and wrinkled = 3
aabb : yellow and wrinkled = 1
Thus, the chance of producing green and round seeds from the F2 cross is 9/16.
With 800 seeds produced:
800 x 9/16 = 450
In other words, out of 800 seeds, 450 of them would be green and round.
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Which choice would have the smallest impact on climate change when purchasing apples at the store?(1 point)
A) buying apples from farms that plan to use organic practices
B) buying apples in large quantities to reduce trips to the store
C) buying apples that have no packaging
D) buying apples that are locally grown
Answers
Answer:
D)
Explanation:
A) The farms are yet to use those practices, which may include pesticides.
B) What about the packaging or farming of those apples?
C) Where were they grown?
the process of ____ means that organisms who are best fit for their environment live longer and _____ more
Answers
Based on the table, which kingdom(s) includes more than one body type?
A) Protista and Fungi
B) Eukarya and Archaea
C) Plantae and Animalia
D) Protista and Plantae
Answers
Explanation:
The answer is C. I looked it up and read about it , i do not copy and paste unless u want me to.
The kingdom(s) includes more than one body type is Plantae and Animalia.
What is the animal kingdom?
The Animalia Kingdom is formed by living beings that have characteristics common to all animals: multicellular heterotrophs that acquire their food from the environment, by ingestion. The Animalia Kingdom has a great variety in relation to the other kingdoms of living beings.
Both the plantae and animalia kingdoms will have diversification in body type as they tend to have greater diversification for each medium the being survives.
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1. What are some things you can do with a pure sample of DNA?
Answers
Answer:
Check if someone did a crime!
Explanation:
Answer:
DNA can be used for molecular analyses including PCR, electrophoresis, sequencing, fingerprinting and cloning
Explanation:
Compared the Mendelian Dominance, how to incomplete dominance and codominance increase the number of phenotypes? Provide an example of each to illustrate your point.
Answers
Answer/Explanation:
Incomplete dominanceIn incomplete dominance, one allele is not entirely dominant over the other, so heterozygotes (organisms with two different alleles for the gene) show an intermediate or blended phenotype.
For example, consider flower colour.
If the allele for red flowers (R) was dominant over the allele for white flowers (r), then there are three possible genotypes (RR, Rr, and rr) and two possible phenotypes. (Red (RR and Rr) and white (rr)).However, if the allele for red flowers (R) was incompletely dominant over the allele for white flowers (r), then there are three possible genotypes (RR, Rr, rr), and three possible phenotypes (red (RR), white (rr), and pink (Rr))Co-dominanceIn incomplete dominance, two alleles are both expressed, one is not dominant over the other. Therefore, heterozygotes (organisms with two different alleles for the gene) express both traits.
For example, consider flower patterns.
If the allele for spots (F) was dominant over the allele for stripes (f), then there are three possible genotypes (FF, Ff, and ff) and two possible phenotypes. (Spots (Ff and ff) and stripes (ff)).However, if the allele for spots (F) was co-dominant to the allele for stripes (f), then there are three possible genotypes (FF, Ff, ff), and three possible phenotypes (spots (FF), stripes (ff), and spots and stripes (Ff))How does cell differentiation lead to the organization within a multicellular organism.
Answers
Cells eventually become specialized and use different parts of genes to become programme to do special jobs and look certain away.
What effects does an organism's cell differentiation have?The process of cell differentiation is crucial for complex creatures during all stages of their life, but it is especially crucial during embryonic development. This is as a result of the changes it brings about in the size, shape, metabolic processes, and signal responsiveness of cells.
Differentiated cells are important in a multicellular organism because they are able to perform a specialised function in the body.
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Match the following vocabulary terms to the correct definitions.
multiple monomers
combined together; these
can be referred to as
macromolecules.
found on the periodic table,
one atom of a single type of
matter.
one-SINGLE, subunit of a
polymer
1. Monomer
2. Polymer
3. Element
Answers
Answer:
Polymer : multiple monomerscombined together; thesecan be referred to asmacromolecules.Monomer : one-SINGLE, subunit of apolymer.Element : one atom of a single type ofmatter.Question 3
When dissolved in water, many bases release which of the following particles?
Select one:
a. Htions
lil
b. H2 molecules
C. (OH) ions
DE
d. O molecules
CLE
Answers
Bases release OH- ions in solutions, whereas Acids release H+ ions in solutions
Where is a continental shelf usually found?
A. At the edge of an ocean, where one plate slides under another
B. In the middle of an ocean, at a mid-ocean ridge
C. At the edge of an ocean, along the border of its shore
D. In the middle of an ocean, where two plates move toward each
other
Answers
Answer:
D
Explanation:
I did this and got it right!
Answer:
Its D) In the middle of an ocean, where two plates move toward each
other.
Explanation:
For more detailed explanation.
A continental shelf extends from the coastline of a continent to a drop-off point called the shelf break. From the break, the shelf descends toward the deep ocean floor in what is called the continental slope. Even though they are underwater, continental shelves are part of the continent
Hope it helps.^-^
A population of elephants does not change in size for several years. Which combination of factors is most likely to account for the stable population size?
A. Unequal deaths and emigration
B. Equal immigration and births
C. Unequal births and deaths
D. Equal births and deaths
Answers
Answer: Equal births and deaths
Explanation: The population does not change so the deaths and births of the elephant herd would need to be equal.
Equal births and deaths is most likely to account for the stable population size. Option D is correct.
A population of elephants that does not change in size for several years is said to be in equilibrium. This means that the number of births in the population is equal to the number of deaths. If the number of births were greater than the number of deaths, the population would grow. If the number of deaths were greater than the number of births, the population would shrink.
There are a number of factors that can influence the birth and death rates of a population. These factors include the availability of food and water, the presence of predators, and the climate. However, if the population of elephants has remained stable for several years, it is likely that the birth and death rates have been equal. Option D is correct.
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If the average length of a double helix in human chromosome is 3.9 cm, approximately how many base pairs are present in such chromosome?
Answers
Answer:
The average length of a double helix in human chromosome whose length is 3.9 cm has approximately 114.7 million base pairs
Explanation:
Lenght of DNA = number of base pairs * distance between consecutive base pairs
The distance between two consecutive base pairs bonded by hydrogen bonds is 0.34 nm.
If the average length of a double helix DNA molecule in human chromosome is 3.9 cm, the average number of base can then be calculated using the formula below:
Average number of base pairs = length of DNA ÷ distance between consecutive base pairs
Average number of base pairs = 3.9 cm/ 0.34 nm = 0.039 m/ 0.00000000034 m
Average number of base pairs = 114705882.4
Therefore, the average length of a double helix in human chromosome whose length is 3.9 cm has approximately 114.7 million base pairs
Is it possible for a blood type B parent and a blood type A parent to have a blood type O child?
A. Yes
B. No
Answers
Answer:
yes
Explanation:
you have your own chromosomes so that's how
Answer:
no
Explanation:
B blood type. But someone who has a B and an O version only makes the B protein. They are B blood type but can pass the O onto their kids. So two B parents can make an O child if both parents are BO.
what are the criteria conservation international has established to determine if an area is a conservation hot spot?the area contains at least 500 endemic vascular plant species and has more than at least 50 percent of its traditional or primary vegetation.the area contains at least 1500 endemic vascular plant species and has more than at least 70 percent of its traditional or primary vegetation.the area contains at least 1500 endemic vascular plant species and has lost at least 70 percent of its traditional or primary vegetation.the area contains at least 500 endemic vascular plant species and has lost at least 20 percent of its traditional or primary vegetation.the area contains at least 1500 endemic vascular plant species and has more than at least 50 percent of its traditional or primary vegetation.
Answers
The criteria established by Conservation International to determine if an area is a conservation hotspot are as follows:
1. The area contains at least 1,500 endemic vascular plant species. 2.The area has more than at least 70 percent of its primary vegetation.
Species are classified based on their shared characteristics and reproductive compatibility. Some types of species include:
1. Allopatric species: Geographically separated populations that evolve independently and may become reproductively isolated.
2. Sympatric species: Coexisting populations that occupy the same geographic area but have different ecological niches.
3. Endemic species: Species that are found naturally in a specific geographic region and are not found anywhere else.
4. Invasive species: Non-native species that are introduced to a new ecosystem and have negative impacts on the native species and environment.
5. Extinct species: Species that no longer exist in the present time.
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Which action is NOT a way to test a hypothesis? a. Analyze results b. Design an experiment c. Make a model d. Gather and evaluate evidence
Answers
Answer:
Make a model
Explanation:
A hypothesis is a plausible explanation of a given phenomenon of the natural world. This explanation (hypothesis) must be tested by using the scientific method.
The action 'analyze results' is NOT a way to test a hypothesis (Option a).A hypothesis can be tested (either confirmed or rejected) by experimental and/or observational procedures.The data collected by these experiments and/or observations can be then used as empirical evidence to support (or reject) the working hypothesis.In conclusion, the action 'analyze results' is NOT a way to test a hypothesis (Option a).
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how do muscles get the energy they need to function
Answers
Answer:
Muscles use the stored chemical energy of food we eat and convert that to heat and energy of motion (kinetic energy). We need energy to enable growth and repair of tissues, to maintain body temperature and to fuel physical activity. Energy comes from foods rich in carbohydrate, protein and fat
Explanation:
A test cross is performed to determine if a specific individual is a carrier. The results generate a 50/50 phenotypic ratio. The test subject was therefore ________.
Answers
Answer:
The test subject was therefore, Heterozygous
Jocelyn Smith is an excellent singer. In fact, she has a band called Jocelyn Smith and
Friends that play often on the local music scene. She has a gig in two days at the County Fair where several talent scouts will be present. Jocelyn feels this may be her big break.
She wakes up two days before her event with what feels like a head cold. You know the symptoms—cough, runny nose, headache, chills, and muscle aches. As the day progresses, Jocelyn begins to feel worse. The day before her gig she wakes with a fever of 103˚F, a severe sore throat, and all of the same symptoms as yesterday.
Our job is to discover why Jocelyn is feeling so ill. Is it because of the infectious agent or is it her own body that is making her sick? To discover the answer, we will go through the steps of the immune response.
We will assume that Jocelyn has Influenza A virus.
Upon initial infection, the innate immune system responds with _______.This process involves the infected area of the body becoming very warm. The warmth comes from physiologic responses that are triggered to combat the infection. When a breech occurs in the physical barriers of the body (i.e. skin or mucus membranes), the innate immune response follows a set of steps to contain the infection.
Step 1. Increase the amount of white blood cells that will get to the area of infection.
How can this be done?
What physiologic response, if increased, will allow more white blood cells to get to the area of infection?
Step 2. Now that the cells are at the site of infection, they need to migrate to the specific area. We increased heart rate to get the cells to the area (by pumping the heart faster, more white blood cells will be able to get to the site of infection faster through the vasculature).
How do cells get out of the vessels?
Step 3. The cells that were initially infected are releasing immune chemicals called chemokines. These specialized immune chemicals are designed to create a trail for white blood cells to follow. The greatest concentration of these chemokines are at the site of infection and the concentration tapers off as the molecules move to the vessels.
Using this information, how do you think white blood cells move to the site of infection?
Answers
The innate immune response helps recruit and direct white blood cells to the site of infection, allowing them to combat the infectious agent and initiate the immune response.
The innate immune system inflames upon infection. This procedure heats the diseased region. When the skin or mucus membranes break, the innate immune response kicks in to confine the infection.
Step 1: Increase white blood cell flow to the infection.
Increase blood flow to the diseased region. Blood flow brings additional white blood cells to the infection location. Vasodilation—widening blood vessels—can improve blood flow.
Step 2: Cells must move from vessels to the target.
Diapedesis (extravasation) lets cells leave blood arteries. White blood cells enter contaminated tissue through blood vessel walls.
Step 3: Chemokines guide white blood cells to the infection. Chemokines secreted by infected cells form a gradient with the highest concentration near the infection site. White blood cells follow this gradient to the infection site.
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3. When lactose is digested properly,
what happens to the simple sugars
produced?
Answers
Answer: The simple sugars are absorbed into the bloodstream and then are made into energy.
Explanation: A enzyme called lactase breaks down lactose into two different sugars that are simple forms. These sugars glucose and galactose get abosrbed to your blood stream.
100 Points BRAINLIEST! Please help me identify what weather this state will be having! Thank you!
Answers
Answer: This front is probably a jet stream. Over the next few hours, it will get a little cold. It is in the atmosphere, not near the ground.
Ben measures the height of two bottles. One is 12 centimeters and the other is 15 centimeters. In millimeters what is the difference of the two heights
Answers
The difference in height between the two bottles is 30 millimeters.
To calculate the difference in height between the two bottles in millimeters, we need to convert the heights from centimeters to millimeters and then subtract one from the other.
First, we convert the height of the first bottle from centimeters to millimeters. Since there are 10 millimeters in a centimeter, we can multiply the height of 12 centimeters by 10 to get the height in millimeters:
12 centimeters * 10 millimeters/centimeter = 120 millimeters.
Next, we convert the height of the second bottle from centimeters to millimeters using the same conversion factor. We multiply the height of 15 centimeters by 10:
15 centimeters * 10 millimeters/centimeter = 150 millimeters.
Now that we have both heights in millimeters, we can calculate the difference. We subtract the height of the first bottle from the height of the second bottle:
150 millimeters - 120 millimeters = 30 millimeters.
Therefore, the difference in height between the two bottles is 30 millimeters.
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tissue culture method of an artificial vegetative propagation in plants play a great role in Forestry Horti culture and agriculture field clarify this statement in three point
Answers
here are three points that clarify the statement that tissue culture method of artificial vegetative propagation plays a great role in forestry, horticulture, and agriculture:
Mass Production of Clones: Tissue culture allows for the production of large numbers of identical clones of plants. This is particularly useful in forestry, where certain desirable traits such as disease resistance or fast growth can be propagated on a large scale. Similarly, in horticulture and agriculture, tissue culture is used to mass-produce desirable varieties of plants, such as fruit trees or ornamental plants, which can then be sold to consumers.
Disease-Free Plants: Tissue culture is a sterile process that allows for the production of disease-free plants. This is particularly important in agriculture and horticulture, where plant diseases can cause significant economic losses. Tissue culture allows for the production of healthy plants, which can then be used to establish disease-free plantations or gardens.
Genetic Modification: Tissue culture can also be used for genetic modification of plants. This is particularly important in agriculture, where genetically modified plants can be developed to be resistant to pests or to produce higher yields. Tissue culture allows for the precise manipulation of plant cells and genes, leading to the development of new plant varieties that have desirable traits.
What are lymph nodes?
Acne
Filters
Fibers
Bacteria
Answers
Answer: The lymph node filters substances in our body. These are shaped like beans and small in size. The cells along with lymph tissue help our body to combat external infections. It can be found in the armpit, neck, and groin.
Which of the following is NOT observed at any point during mitosis?
Microtubule polymerization
Microtubule depolymerization
kinesin-like motor protein activity
Dynein-like motor protein activity
None of the above; All are observed during mitosis
Answers
The **NOT observed** event during mitosis is: **None of the above; All are observed during mitosis**.
In the process of mitosis, kinesin-like motor proteins play a crucial role in the proper segregation of chromosomes. These proteins interact with microtubules, assisting in the formation and function of the mitotic spindle. Since kinesin-like motor protein activity is indeed observed during mitosis, the correct answer is that all options listed are observed during mitosis. The purpose of mitosis is to create two genetically identical daughter cells from a single parent cell, ensuring accurate distribution of genetic material. The involvement of motor proteins, such as kinesin, is essential for this process to be completed successfully.
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can any of the skeletal material be used to determine the biological sex of the victim(s)? if so, which bone(s)?
Answers
Yes, skeletal material can be used to determine the biological sex of the victim. The skeletal material that can be used to determine the biological sex of the victim includes the skull, pelvis, and long bones such as the femur.
The determination of the sex of a victim from skeletal remains is important in forensic investigations where the identity of a victim cannot be established by other means such as identification documents, fingerprints, or DNA analysis. Sex determination is crucial to develop a biological profile of the victim, which can provide important information to solve the case and help in the identification of the victim.
The skeletal material that can be used to determine the biological sex of the victim includes the skull, pelvis, and long bones such as the femur. The skull contains several features that can be used to determine the sex of the victim such as the shape of the skull and size of the mandible. For example, male skulls are usually larger and more robust than female skulls.
The pelvis is another bone that can be used to determine the biological sex of the victim. The pelvis is generally wider in females to accommodate childbirth and is more narrow in males. Furthermore, the pelvis bone has several features that can indicate the sex of the victim, such as the subpubic angle which is greater in females.
The long bones of the body can also be used to determine the sex of the victim. The femur, for example, has features such as the shape of the bone and the size of the head and neck, which can indicate the sex of the victim.
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Is there more than one central idea of the article? How do you know? Newsela Article called The Amazon is reaching a tipping point due to deforestation
Answers
Answer:
But I'm not sure what time you cried for the first place I can do that for me
2. What matter are we talking about when we refer to temperature and wind
Answers
Temperature is the heat intensity of a substance and wind speed is the movement of air.
Any difference in temperature between two locations creates a temperature gradient creating a difference in pressure between the two locations. Weather is the state of the atmosphere such as temperature, pressure, wind, humidity, precipitation, and cloud cover. This is different from climate, which is all weather conditions at a particular location averaged over about 30 years.
As the wind picks up it pulls heat away from your body lowering your skin temperature and ultimately your core temperature. Therefore, it feels colder because the wind blows. If the air temperature is 0°F and the wind speed is 15 mph, the wind chill is -19°F. Winds carry moisture into the atmosphere and carry heat or cold into the climate, influencing weather patterns. A change in the wind, therefore, causes a change in weather.
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If a battery produced 12.6 volts, what would the current flow be for a 6 Ohm resistor
Answers
Answer:
I = 2.1 A
Explanation:
This is physics, but I will answer here either way.
First, the battery produces a voltage of 12 V in a resistor with 6 ohm, and we want the current flow (I). We need to apply the following expression:
V = R * I (1)
This is the Ohm's law. From here we can solve for I and:
I = V/R (2)
Now, we just need to replace the data and solve for the current:
I = 12.6 / 6
I = 2.1 AHope this helps