what role(s) do the pancreatic islets play in the negative feedback control of blood glucose levels?
Answers
Sensor, integrating center, and effector roles do the pancreatic islets play in the negative feedback control of blood glucose levels.
Pancreatic Islets- Our pancreas contains clusters of cells known as pancreatic islets, commonly referred to as islets of Langerhans. The pancreas is the organ that produces hormones to aid in the digestion and use of food by the body. The beta cells that produce the hormone insulin are among the several cell types found in islets.
Insulin- A hormone produced by the pancreatic islet cells. By delivering sugar to a cells, where it may be utilized by the body to provide energy, insulin regulates the quantity of glucose in the blood.
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Related Questions
how can a rising tide be stopped?
Answers
Answer:
Building seawalls
Explanation:
one solution that cities employ to decrease flooding from tides and Storm is constructing seawalls.
*PLEASE READ CAREFULLY*
Which statement about
energy is true?
1) Energy can be destroyed.
2)Energy can be created.
3) Energy cannot change form.
4) Energy cannot be created or destroyed, but its form can change.
Answers
Answer: 4
Explanation: I take biology now in college my senior year and what I’ve learned is energy cannot be created nor destroyed what is form can be changed and you literally can Google that and it’ll tell you the exact same thing
If you counted 57 colonies on your 10^-6 plate, how many bacteria would you calculate were plated on the 10^-5 plate?
Answers
The number of bacteria plated on a 10⁵ plate can be calculated based on the number of colonies observed on a 10⁶ plate by multiplying the number of colonies by 10.
This is because each plate represents a tenfold dilution, so the number of bacteria on the 10⁵ plate is ten times greater than the number on the 10⁶plate.
If you counted 57 colonies on your 10⁶ plate, then the number of bacteria on this plate is obtained by multiplying the number of colonies by the dilution factor of the plate, which is 10⁶ .
The formula to calculate the number of bacteria is:Total number of bacteria = number of colonies × reciprocal of the dilution factor.Total number of bacteria on a 10⁶ plate = 57 × 10⁶ = 5.7 × 10⁷
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Consider two different atoms of the element oxygen. Atom A has 8 protons, 8 electrons, and 8 neutrons. Atom B has 8 protons, 10 neutrons, and 8 electrons. Which of the following statements about the two atoms is correct?
All of these choices are correct.
Both atoms A and B have the atomic number of 8.
Atoms A and B are different isotopes of oxygen.
Atom A has an atomic mass of 16 and atom B has an atomic mass of 18.
Answers
The question specifies two different atoms of the same element, oxygen. All the statements regarding the two atoms are correct.
What is an atom?An atom is the basic unit of matter, consisting of a nucleus at the centre, made up of positively charged protons and uncharged neutrons, surrounded by negatively charged electrons in shells or orbitals. Atoms are identified by their atomic number, which is the number of protons in their nucleus.
From the given statements in the question, both atoms A and B have the same number of protons (8), which is the atomic number of oxygen. The atomic number determines the element's identity, so both atoms are oxygen atoms.
Atoms A and B have different numbers of neutrons, making them different isotopes of oxygen. Isotopes are atoms of the same element with the same number of protons but differ in the number of neutrons.
The sum of the protons and neutrons present in the nucleus is the atomic mass of an atom. Atom A has 8 protons and 8 neutrons, so its atomic mass is 16. Atom B has 8 protons and 10 neutrons, so its atomic mass is 18.
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- If two organisms share the
same family, what else do
they have in mmmon?
Answers
Answer:
They also belong to the same kingdom, phylum, class and order.
Explanation:
continuous sequence of growth (interphase) and division (mitosis) in a cell. cell growth phase where a cell increases in size, carries on metabolism, and duplicates chromosomes prior to division. period of nuclear cell division in which two daughter cells are formed, each containing a complete set of chromosomes.
Answers
The cell cycle is a four-stage procedure in which the cell enlarges replicates its DNA gets ready to divide ( and splits (mitosis, or M, stage).
What is the cell's continuous process of growth, interphase, and division during mitosis?The cell cycle is a four-step process in which the cell grows in size (gap 1, or G1, stage), duplicates its DNA (synthesis, or S, stage), gets ready to divide (gap 2, or G2, stage), and divides (gap 3, or S, stage) (mitosis, or M, stage). Interphase, which accounts for the time between cell divisions, is made up of the phases G1, S, and G2.Interphase. The cell prepares for cell division during interphase while simultaneously going through regular activities. Numerous internal and external requirements must be satisfied for a cell to transition from the interphase to the mitotic phase.To learn more about cell refer to:
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This organelle uses light energy to make sugar from carbon dioxide and water are
Answers
Answer: Chloroplast
Explanation:
Plants and some algae have chloroplasts responsible for photosynthesis. Plants undergo photosynthesis to transform light energy into chemical energy. This energy is stored in the form of sugar to support their growth and provide energy. Chloroplasts have a double membrane, with the thylakoid membrane located within the inner membrane.
Photosynthesis occurs within the thylakoid membrane, which is folded into sacs called thylakoids. Chlorophyll, a green pigment, is present in the thylakoids and it absorbs light energy to split water molecules into hydrogen and oxygen. The oxygen is released into the atmosphere while the hydrogen is used to create ATP, a molecule that stores energy. ATP and hydrogen are then utilized to make sugar, the final product of photosynthesis.
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Chloroplast
Explanation:
Chloroplast is a green pigmented organelle which some eukaryotes (such as plants and algae) have in their cells and it is in charge of photosynthesis.
The opposite processes of evaporation is.
A. condensation.
B. percolation.
C. transpiration.
Answers
Answer:
condensation
Explanation:
Answer:
A. condensation
Explanation:
Evaporation is the process of liquid turning into gas, the opposite would be condensation which is the process of water vapor turning back into a liquid.
Observe: An organelle is a cell structure that performs a specific function. Observe the samples below under the highest magnification. Click the Show labels checkbox to label the organelles. List the organelles and approximate size of the cells in each sample.
Answers
Hormones can also be used to treat infertility.
Explain how clomifene therapy and IVF can improve female fertility.
Answers
Clomifene is a drug used as a fertility drug to stimulate ovulation, the release of eggs. It works by blocking the action of oestrogen's negative feedback on LH. Therefore more LH is released in a surge.
Fertility drugs contain FSH and LH to artificially alter the menstrual cycle and increase the chance of pregnancy. The FSH stimulates eggs to mature in the ovary and the LH encourages ovulation to occur.
Gonadotropin medications include human menopausal gonadotropin or hMG and FSH. Another gonadotropin, human chorionic gonadotropin, is used to mature the eggs and trigger their release at the time of ovulation.
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What are the advantages of having both an activator and a repressor protein?
Answers
Having both an activator and a repressor protein in gene regulation provides several advantages. Firstly, it allows for a more fine-tuned control of gene expression.
Activator proteins stimulate gene transcription, while repressor proteins inhibit it. This allows the cell to regulate the level of gene expression, ensuring that the right amount of protein is produced at the right time.
Secondly, having both an activator and a repressor protein can provide a rapid response to changing conditions. For example, if the cell suddenly requires a specific protein, an activator protein can quickly stimulate its production. Conversely, if the protein is no longer needed, a repressor protein can rapidly shut down transcription. This rapid response is crucial for the cell to adapt to changing environmental conditions and maintain homeostasis.
Lastly, having both an activator and a repressor protein provides redundancy in gene regulation. If one protein malfunctions, the other can compensate and ensure that the appropriate level of gene expression is maintained. This redundancy is essential for the cell to avoid harmful effects resulting from gene expression being too high or too low.
In summary, having both an activator and a repressor protein provides fine-tuned control, a rapid response to changing conditions, and redundancy in gene regulation. All of these advantages are crucial for the cell to maintain homeostasis and ensure proper gene expression.
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Check the image for question
Answers
Hope this helps
When the Earth's rotation naturally brings water away from the
equator and moves cold water close to the surface Westerly
winds begin to strengthen again. What does this signal?
O A. The midpoint of the Coriolis Cycle
O
B. The beginning of El Nino
O c. The end of El Nino
OD. The beginning of an Ice Age
Answers
A metamorphic rock interacts with the layers of Earth and melts because of extreme heat and pressure. Which of these is most likely formed when the molten rock cools?
Answers
Answer:
When granite is subjected to intense heat and pressure, it changes into a metamorphic rock called gneiss. Slate is another common metamorphic rock that forms from shale. Limestone, a sedimentary rock, will change into the metamorphic rock marble if the right conditions are met.
describe how increasing the stimulus frequency affected the force developed by the sleketal muscle in this activity
Answers
Each succeeding stimulus will cause more muscular tension as the stimulus frequency rises. This growth will have a ceiling.
What are skeletal muscles and where are they located ?All of your movements are made possible by skeletal muscle, which is made up of fibers of tissue connected to your skeleton or bones. These muscles can also be found at the openings of many body tracts, including the urethra, anus, and throat. Because you can regulate when and how they perform, they are frequently referred to as voluntary muscles.
One of the three important muscle tissues in the human body is found in the skeleton. Thousands of muscle fibers are encased in connective tissue sheaths to form each skeletal muscle. Fasciculi are the individual bundles of muscle fibers that make up skeletal muscles.
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Briefly explain how the diagram to the right makes a good
model to represent the decay of a radioactive element.
You are encouraged to label the diagram.
You must use complete sentences.
Answers
An element's radioactive decay graph can be categorized as an exponential graph, more particularly, the decay of an element through exponential processes. As x increases exponentially in these graphs, y declines and gets closer to zero.
What is Radioactive Decay (Half Life) Equation?The centre of each atom, or nucleus, which accounts for the majority of an element's mass, is made up of a specific number of protons and neutrons. Even though every element has a unique nucleus, they are not always stable. Radiation is the name for the rays and particles that are emitted by unstable elements in an effort to stabilize their nucleus. As long as the element doesn't have a stable nucleus, this process, known as radioactive decay, continues on its own. Different substances breakdown at different speeds when they go through radioactive decay. Through the use of half lifetimes, these rates are measured. The duration of time before half of the nucleus disintegrates is known as a half-life, as its name would imply.How much of an element remains after a specific amount of time can be calculated using the following equation using half-lives:N\s= N ( 1 /2 ) n
Where N denotes the quantity of the element still present, N 0 is the quantity of the element at the beginning, and n denotes the number of half lives that have passed. By dividing the amount of time that has elapsed (t) by the duration of the half-life (T), one can determine the number of half-lives that have passed, even if this is unknown:n = t / T.
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After the completion of the polypeptide synthesis, the protein will be in its
structure.
A.primary
B.secondary
C.tertiary
D.quaternary
Answers
Answer:
B. secondary
Explanation:
A scientist discovers a new plant. After investigating its properties, the scientist concludes that the plant does not photosynthesize. What evidence might have led the scientist to draw this conclusion?.
Answers
Given what we know, we can confirm that the most likely reason for a scientist to conclude outright that a plant does not do photosynthesis would be that the scientist noticed an absence of chloroplasts in the plant cells.
What are chloroplasts?Chloroplasts are organelle specific to plant cells.These triple-membrane surrounded organelles contain chlorophyll. These organelles are where photosynthesis takes place. Therefore, without the presence of chloroplasts, a plant cannot do photosynthesis.Therefore, given that chloroplasts are the organelle of a plant cell in charge of photosynthesis, and that it is not possible to undergo this process without the presence of chloroplasts, we can confirm that their absence is the most likely reason that the scientist will conclude that the plant does not do photosynthesis.
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Which structure is thick to protect some of the reproductive structures in flowers?
O petal
O sepal
O style
O anther
Answers
Answer:
C. Sepal
Explanation:
The flower of a plant is the reproductive structure of that plant where all reproductive activities of the plant takes place. However, some structures in the flower performs respective duties to aid this reproduction process. One of those structures or parts of a flower is the SEPAL
The sepal is a usually green external part of a flower that functions to protect some of the other reproductive structures in flowers e.g petals, due to its thick epidermis. Note that, the collection of sepals in a flower is called CALYX
What process allows nitrogen to enter the atmosphere?
Answers
Look up for more information, websites such as khan academy will explain it good.
Which interaction helps stabilize the tertiary level of protein organization?.
Answers
Answer:
Interactions among R groups results in hydrophobic interactions, hydrogen bonds, salt bridges, and sulfur-sulfur covalent bonds.
Explanation:
The above listed interactions help stabilize the protien organization (R group is the main player)
What are the basic units of a chemical element called?
A. Solids
B. Atoms
C. Molecules
D. Gases
Answers
Answer:
B) they are called atoms
atoms are the basic unit of elements
molecules are made up of atoms
1. What is the difference between weathering and erosion?
2. How are mechanical weathering and chemical weathering different?
3. How are hydrolysis and oxidation similar?
4. Explain the process of exfoliation
5. As waves crash into rock along the shoreline, particles of sand, shell, and other materials in the
ocean water loosen tiny bits of sediment from the rock. As the waves recede, they carry the
sediment away. In this scenario, which process represents weathering, and which process
represents erosion?
Answers
Answer:
(1).When the smaller rock pieces are moved by these natural forces, it is called erosion. So, if a rock is changed or broken but stays where it is, it is called weathering. If the pieces of weathered rock are moved away, it is called erosion.
(2).Mechanical weathering breaks rocks into smaller pieces without changing their composition. ... Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface. Water, carbon dioxide, and oxygen are important agents of chemical weathering.
(3)Hydrolysis and oxidation are similar in that both involve chemical reactions between a mineral and another material. Hydrolysis is a chemical reaction between a mineral and water. Oxidation is a chemical reaction between a mineral and oxygen. Exfoliation is the cracking of rock caused by a decrease in pressure.
(4)Exfoliation is a process in which large flat or curved sheets of rock fracture and are detached from the outcrop due to pressure release: As erosion removes the overburden from a rock that formed at high pressure deep in the Earth´s crust, it allows the rock to expand, thus resulting in cracks and fractures along sheet ...
(5) The waves crashing into rock along the shorelines , particles of sand,shell. and other materials is the processs of of Erosion . THe last one where waves recede is Weathering .
Answer:
1.Weathering is the breakdown of rock into smaller particles through mechanical or chemical means. Erosion is the process by which weathering products are carried away.
2.Mechanical weathering simply breaks rock into smaller fragments. Chemical weathering actually changes the mineral composition of rock.
3.Hydrolysis and oxidation are similar in that both involve chemical reactions between a mineral and another material. Hydrolysis is a chemical reaction between a mineral and water. Oxidation is a chemical reaction between a mineral and oxygen.
4.Exfoliation is the cracking of rock caused by a decrease in pressure. It occurs when a mass of rock is exposed by weathering and removal of the overlying rock, which decreases pressure on the rock. As a result, the rock expands, which causes the rock to crack.
5.In the scenario, weathering occurs when tiny bits of sand and shell in the waves loosen bits of sediment from the rock. Erosion occurs when the waves carry away those bits of sediment.
Explanation:
PLEASE QUICK!!!!
Complete the analogy
Cells : _______ :: Species : Population
Answers
Answer:
There are more but there is only one blank so,
The answer should be Organism (?)
a physicist wants to measure the force required to push a heavy box up a ramp. what tools might the physicist use? what measurements should the physicist take?
Answers
Answer:
Flat surface and force applying body.
Explanation:
Flat surface and force applying body are the tools used by the physicist in order to know the amount of force required to push the body. Mass of the body and the acceleration produced from the application of force are the measurements recorded by the physicist. By multiplying value of mass and acceleration we can measure the amount force required to push the heavy box.
In this assignment, you will create a poster with an illustration that models stem cell division and differentiation. Your poster should include a title, an illustration, and brief descriptions of stem cells, stem
cell division and differentiation, and the role of specialized cells in complex organisms, such as humans.
You will also type one to two paragraphs summarizing the information from your poster.
Please do a poster !!! And help
Answers
The poster illustrating the models of stem cell division and differentiation is found in the attachment.
What are stem cell division and differentiation?Stem cell division produces daughter cells. These daughter cells either develop into fresh stem cells or into differentiated cells with a more specific purpose, like bone, blood, brain, or heart muscle cells.
Through stem cell differentiation, a cell can become more specialized by switching from growth to specialization. This entails a series of modifications to metabolic activity, signal receptivity, membrane potential, and cell morphology.
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What else must you know to prove the triangles are congruent by sas?
Answers
Answer:
Those have the same lengths or measures. Then. We can deduce that these two triangles must be congruent. By the rigid motion definition of congruence. Or the shorthand is if we have side-angle-side
Explanation:
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If you are unable to get your bacterial slide to focus using the 10x objective lens, but it was focused with the 4x lens, what would be the first thing to try?.
Answers
You must clean the 10X lens firstly if you are unable to get your bacterial slide to focus using the 10x objective lens, but it was focused with the 4x lens.
The four objective lenses on your microscope are the scanning (4x), low (10x), high (40x), and oil immersion lenses (100x). The oil immersion lens, which is used to observe microorganisms and calls for technical instructions not addressed in this lab, is not something you will utilize in this one.
The eyepiece's ocular lens has a magnification in addition to the objective lenses. The sum of the ocular and objective lenses' magnifications is used to get the overall magnification. The 10x objective lens has to be cleaned first if your bacterial slide was focused with the 4x lens but is not focusing with the 10x objective lens.
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Question correction:
If you are unable to get your bacterial slide to focus using the 10X objective lens, but it was focused with the 4X lens, what would be the first thing to try?
Open the diaphragm. Adjust the height of the condenser. Clean the 10X lens. Turn the brightness of the lamp down.if a hypothetical gene's dna is composed of 31% cytosine, what is the percentage of the other three nucleotides? what is the percentage of purines and pyrimidines?
Answers
Thymine must be 31% as well, leaving 62% of the 100% available unutilized. Following that, the remaining complementary pairs, guanine and cytosine, must split the remaining 39%.
What is the rule of Chargaff?According to Chargaff's rule, the concentrations of guanine and adenine are always identical to each other as well as the concentrations of thymine and cytosine.
How many purines are there compared to pyrimidines?Chargaff's rule states that the ratio of purines to pyrimidines is 1:1. The reason for this is that while purines and pyrimidines combine to make nucleotides, there are exactly as many purines as pyrimidines in a double-stranded DNA.
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incubation of gram-negative bacteria with lysozyme in an isotonic medium causes rod-shaped bacteria to assume a spherical shape. the cause of this phenomenon is:
Answers
Incubation of gram-negative bacteria with lysozyme in an isotonic medium causes rod-shaped bacteria to assume a spherical shape. the cause of this phenomenon is destruction of the cell wall.
Because it cannot get through the outer membrane to the peptidoglycan, lysozyme is utterly ineffective against the majority of gram-negative bacteria at ambient pressure.
Due to its capacity to hydrolyze the -1,4-glycosidic bond found in the polysaccharide layer of these bacteria's cell walls, lysozyme is particularly effective at killing Gram-positive bacteria.
Gram-positive bacteria are quickly killed by lysozyme's degradation of the peptidoglycan in their cell walls, but this mechanism is unable to explain why lysozyme is protective against Gram-negative bacteria.
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The complete question is:
Incubation of gram-negative bacteria with lysozyme in an isotonic medium causes rod-shaped bacteria to assume a spherical shape. The cause of this phenomenon is ______.