1. Which structure provides the network to send electrical signals throughout the body?
dendrites
brain
nerves
axons
Answers
Answer:
3. nerves
Explanation:
Nerves are responsible for carrying out electrical signals from your brain to the rest of your body.
Related Questions
Cystic fibrosis is a recessively inherited disorder that results from a mutation in the gene encoding CFTR chloride ion channels located on the surface of many epithelial cells. As shown in the figure, the mutation prevents the normal movement of chloride ions from the cytosol of the cell to the extracellular fluid. As a consequence of the mutation, the mucus layer that is normally present on the surface of the cells becomes exceptionally dehydrated and viscous.
An answer to which of the following questions would provide the most information about the association between the CFTR mutation and the viscous mucus?
answer choices
Is the mucus also secreted from the cells through the CFTR proteins?
How does the disrupted chloride movement affect the movement of sodium ions and water by the cell?
How does the mutation alter the structure of the CFTR proteins?
What is the change in nucleotide sequence that results in the CFTR mutation?
Answers
The question that would provide more information about the relationship between the CFTR mutation and the viscous mucus, is:
How does the disrupted chloride movement affect the movement of sodium ions and water by the cell?Correct answer: letter B.
This question is the right question to ask because the CFTR mutation disrupts the chloride movement, which in turn affects the movement of sodium ions and water by the cell.
This could be the cause of the abnormally viscous mucus layer, and the answer to this question would provide more information about the association between the CFTR mutation and the viscous mucus.
Regarding the question, Disruption of chloride movement affects the movement of sodium ions and water through the cell because it alters the osmotic balance between the cell and its environment. Normally, the flow of chloride ions out of the cell is coupled to the flow of sodium ions into the cell.
This creates an osmotic gradient that attracts water into the cell. When the flow of chloride ions is interrupted, this gradient is also interrupted, resulting in decreased movement of sodium ions and water into the cell. The result is dehydration and the formation of a viscous layer of mucus on the cell surface.
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PLEASE HELP ME! I HAVE NO BRAIN CELLS.
Some minerals are evenly distributed around the planet, while other minerals are quite rare. Why are some minerals so rare and unevenly distributed?
A. Certain minerals form only under high heat and pressure that develop near volcanoes.
B. Certain minerals form only in Earth's crust, so they are difficult to locate.
C. Certain minerals form only in specific climates, and not all climates, are the same around the world.
D. Certain minerals form only in the extreme heat found at the bottom of lakes and rivers.
Answers
Answer:
C
Explanation:
Minerals, fresh water, and biosphere resources are distributed unevenly around the planet as a result of past geologic processes. ... Mineral, fresh water, ocean, biosphere, and atmosphere resources are limited, and many are not renewable or replaceable over human lifetimes.
The option (C) is correct. Certain minerals form only in specific climates, and not all climates, are the same around the world.
What are minerals?A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. Common minerals include quartz, feldspar, mica, amphibole, olivine, and calcite.
Moreover, the major minerals, which are used and stored in large quantities in the body, are calcium, chloride, magnesium, phosphorus, potassium, sodium, and sulfur. The trace minerals are just as vital to our health as the major minerals, but we don't need large amounts.
Therefore, economic minerals are used in a wide range of applications related to construction, manufacturing, agriculture and energy supply. Economic minerals include: Energy minerals used to produce electricity, fuel for transportation, heating for homes and offices and in the manufacture of plastics.
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Question 3 of 10 As in mitosis, in meiosis the chromosomes first become visible in
A. telophase.
B. anaphase
C. prophase
D. metaphase
Answers
During photosynthesis charged electrons move through a chain of proteins called
Answers
I think it's lights-dependent reaction
Explanation:
Because the light dependent reaction use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier nadph in Plants, the light reaction take place in the thylakoid membranes of organelles has called chloroplast.
Which of the following correctly compares fermentation and cellular respiration?
Question 20 options:
Cellular respiration produces more ATP molecules than fermentation.
Both provide ATP molecules, but only fermentation occurs when oxygen is present.
Both result in substantial ATP molecules and lactic acid production.
Cellular respiration provides ATP molecules at a slower rate than fermentation.
Answers
Answer:
NO SORRY I DONT KNOW
Explanation:
a rectangular room is 10 M long and 7.5 M wide the cost of covering the floor with carpet 1.25 m wide at two Both provide ATP molecules, but only fermentation occurs when oxygen is present.
250 per metre
Which statement best describes the formation and importance of the hydrogen ion gradient during the electron transport chain?a. A hydrogen ion gradient across the membrane establishes a concentration gradient and not an electrical gradient, thus assisting during the electron transport chain.b. A hydrogen ion gradient is established by pumping two hydrogen ions across the membrane from the matrix in the intermembrane space. Its uneven distribution across the membrane establishes both concentration and electrical gradients.c. A hydrogen ion gradient is established by pumping four hydrogen ions across the membrane from the matrix into the intermembrane space and its uneven distribution across the membrane establishes concentration and electrical gradients.d. Hydrogen ions are present in the intermembrane space from the beginning and results in the formation of gradients necessary for the function of ATP synthase.
Answers
A hydrogen ion gradient is established by pumping two hydrogen ions across the membrane from the matrix in the intermembrane space. Thus, option B is the correct answer.
Its uneven distribution across the membrane establishes both concentration and electrical gradients. The best statement that describes the formation and importance of the hydrogen ion gradient during the electron transport chain is B. Hydrogen ions (protons) are pumped across the inner mitochondrial membrane by protein complexes I, III, and IV, creating a gradient. This gradient is made up of both electrical and concentration components, which are used to generate ATP from ADP and Pi.
This gradient is utilized by ATP synthase, which is a rotary molecular machine that makes ATP in the matrix. The movement of protons through the F0 subunit of ATP synthase drives the rotation of the F1 subunit, which catalyzes ATP synthesis in response to the proton gradient. The energy derived from electron transport is used to pump H+ ions across the inner mitochondrial membrane, producing a proton gradient. The F1F0-ATP synthase complex uses this proton gradient to synthesize ATP. As protons flow down their gradient via F0, their energy is captured and used by the F1 portion of ATP synthase to power ATP synthesis.
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which of the following would be considered a healthy pattern of weight gain in a pregnant woman?
Answers
Answer:
Underweight women should gain 28 to 40 pounds. And overweight women may need to gain only 15 to 25 pounds during pregnancy. In general, you should gain about 2 to 4 pounds during the first three months you're pregnant and 1 pound a week during the rest of your pregnancy.
What is the sentence of pluripotent?
Answers
HELP!
Which compound do
plants use for structural support?
o
A. cellulose
O B. glucose
O C. glycogen
0 D. starch
Answers
Answer:
A. Cellulose
Explanation:
Biomass Energy is mainly used for what activities?
Answers
Answer:
Some examples of biomass fuels are wood, crops, manure, and some garbage. When burned, the chemical energy in biomass is released as heat.
Explanation:
how does a melanocyte’s shape relate to its function?
Answers
Answer:
Explanation:
During the embryonic stage of life, melanocytes move from the neural crest to the basal layer of the epidermis. Melanocytes are branch-shaped, which allows them to transfer melanin to other skin cells, like keratinocytes. Keratinocytes are the most common skin cells that strengthen the hair, nails, and skin.
The shape of a melanocyte is directly related to its function in producing and distributing the pigment melanin.
Melanocytes are specialized cells found in the epidermis, the outermost layer of the skin, as well as in other parts of the body such as the eyes, hair follicles, and inner ear.
Their primary function is to produce and release melanin, the pigment responsible for the color of the skin, hair, and eyes.
The shape of a melanocyte is characterized by long, branching extensions called dendrites.
Thus, these dendrites allow the melanocytes to interact with and transfer melanin to neighboring cells, particularly the epidermal cells known as keratinocytes.
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Robert Hooke was the first scientist who coined the term ‘cell’. Which cell did he observe under the microscope? a.Fiber
b.Cork
c.Root
d.Leaf
Answers
Answer: B.Cork
Robert Hooke coined the term 'cell' after observing thin slices of cork under a microscope. Hence, cork cells were observed by Robert Hooke under the microscope.
Explanation: Hope this helps!! :))
How confident are you in your ability to describe how the weather that happens is related to the movement of air masses?PLEASEEEEEEEEEEEEEEEEE HELPPPPPPPPPPPPPPP MEEEEEEEEEEE PLEASEEEEEEEEEEE
Answers
how confident are you in answering the question, if you are not confident than say you aren’t and try to explain it to the best of your ability.
1. Explain the difference between intentional injuries and unintentional injuries and give examples of each.
Answers
what's the summary of Carbon in the global Ecosystem
Answers
Carbon is found in the atmosphere, lithosphere and the hydrosphere via the carbon cycle.
What is the place of carbon?
We know that carbon is one of the elements that is very important in the global ecosystem. This is because the cycling of the carbon affacts the temperature of the universe which goes a long way to affect the nature of life on the planet as we know it.
Carbon is transferred along the food chain. Eventually, through respiration, decomposition, and other processes, carbon is released back into the atmosphere.
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Which tatement BEST decribe the relationhip between adenoine diphophate (ADP and adenoine triphophate (ATP)?
©
A. With an input of energy, ADP rearrange to become ATP. B. Without any energy change, ADP rearrange to become ATP. • C. With an input of energy, ADP combine with a phophate group to become ATP. O D. With a releae of energy, ADP combine with a phophate group to become ATP
Answers
The link between adenosine diphosphate (ADP) and adenosine triphosphate (ATP) is best explained by the fact that when energy is added, ADP interacts with a phosphate group to form ATP. The right Option is (c).
The mitochondria of cells are thought of as the powerhouse since ATP is produced there. As seen in the reaction below, ATP is produced when ADP reacts with an inorganic phosphate and an energy source to generate ADP;
Pi + energy + ATP + H2O = ADP + inorganic phosphate
One adenine, one sugar, and two phosphates make up the biological molecule known as adenosine diphosphate (ADP). Its most crucial function is the creation of ATP, the most vital energy molecule in living cells, when it is coupled with a phosphate molecule. An enzyme called ATP synthase produces ATP during oxidative phosphorylation. Specifically, protons travel through the protein and cause a conformational change once a proton gradient is established. ADP and inorganic phosphate are then combined by ATP synthase to form an ATP molecule.
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Correct Question:
Which statement BEST describes the relationship between adenosine diphosphate (ADP) and adenosine triphosphate (ATP)?
A. With an input of energy, ADP rearranges to become ATP.
B. Without any energy change, ADP rearranges to become ATP.
C. With an input of energy, ADP combines with a phosphate group to become ATP.
D. With a release of energy, ADP combines with a phosphate group to become ATP.
Which of the following is NOT true of anaerobic metabolism? a It is relied upon for high-intensity, short-duration activities like sprinting. b It occurs in the cytosol of cells. c Its primary fuel is fat. d It doesn't require oxygen.
Answers
Answer: The option that is NOT true is:
C. Its primary fuel is fat.
Explanation:
Anaerobic metabolism does not primarily rely on fat as its fuel source.
The correct answer is Option (c)
Option (c) Its primary fuel is fat, which is NOT true of anaerobic metabolism.
Let's delve into the topic by breaking down the words anaerobic, which gives us an-aerobic.
Aerobic refers to anything, which involves the presence of air, or more specifically oxygen. Thus any aerobic activity would involve the presence and usage of oxygen for its necessary functions.
Anaerobic would thus mean any activity which doesn't require the presence of oxygen.
Anaerobic metabolism defines the process by which cells, without the presence of oxygen, produce energy for their work. When the supply of oxygen is limited, cells opt for this alternative pathway to produce energy to keep themselves running.
Here, the breakdown of glucose occurs even in limited oxygen to give us ATPs (Adenosine Triphosphate), the energy currency of the cell.
Coming back to the question, we go through the options one by one.
During high-intensity activities like sprinting or heavy exercise, your lungs don't work fast enough to provide the body with enough air. Thus the glucose gets decomposed without the presence of oxygen to give the body the energy it needs through anaerobic respiration.
Thus, option A is correct.
Anaerobic respiration or metabolism occurs in the fluid part of the cell known as the cytosol, due to the availability of a suitable environment for chemical reactions.
Thus option B is correct.
Anaerobic metabolism doesn't require oxygen, as discussed before.
Thus option D is correct.
But, the primary source of fuel for running anaerobic chemical reactions is not fat, but glucose which breaks down to give ATP.
Thus, option C is incorrect.
Thus, the answer to the question is option C.
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Draw a diagram of your circulatory model. Use the terms Left Side of the Heart, Right Side of the Heart, Lungs, and Body. Reference the lab Introduction to label your drawing. Use arrows to label your drawing to show the direction of water flow.
Answers
Diagram: Lungs --> Right Side of the Heart --> Body --> Left Side of the Heart --> Lungs. It is composed of the heart, blood vessels, and blood. The heart is divided into two sides
The circulatory system is responsible for transporting oxygen and nutrients throughout the body. It is composed of the heart, blood vessels, and blood. The heart is divided into two sides, the right side and the left side. The right side of the heart receives oxygen-poor blood from the body and pumps it to the lungs, where it picks up oxygen and releases carbon dioxide. The oxygen-rich blood then flows back to the left side of the heart, which pumps it to the rest of the body. This cycle is continuous and ensures that all organs and tissues receive the necessary oxygen and nutrients to function properly.
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Place the reactions of the B-oxidation pathway in the proper sequence, starting with acyl-CoA entering the mitochondrion. Acyl-CoA enters the mitochondrion Acetyl-CoA enters the citric acid cycle Answer Bank Acyl-CoA dehydrogenase oxidizes acyl-CoA using FAD. B-Hydroxyacyl-CoA dehydrogenase oxidizes the C-3 hydroxyl group to a ketone. Enoyl-CoA hydratase hydrates the double bond between C-2 and C-3. Cleavage generates acyl-CoA and a two-carbon thiol.
Answers
With the aid of FAD, acyl-CoA dehydrogenase oxidises acyl-CoA, hydrating the double bond and oxidising the C-3 hydroxyl group. A two-carbon thiol and acyl-CoA are produced during cleavage. The citric acid cycle is entered by acetyl-CoA.
How does acyl-CoA dehydrogenase function?A class of enzymes known as acyl-CoA dehydrogenases (ACADs) is responsible for catalysing the first phase of each cycle of fatty acid -oxidation in cellular mitochondria. The acyl-CoA thioester substrate's C2 and C3 are joined by a trans double-bond as a result of their action.
By what mechanism is the acyl-CoA transported to the mitochondria?Thus, this occurs as a result of the unique carnitine transport mechanism. It takes place in 4 steps: By the CAT-1 enzyme, which is located on the inner mitochondrial membrane's outer surface, the acyl group of acyl-CoA is converted to carnitine.
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What are the 3 common microscopic techniques in microbiology?
Answers
The three common microscopic techniques in microbiology are dark field microscopy, bright field microscopy, and phase contrast microscopy, and all these have different types of samples.
What is the light microscope?The light microscope uses light to visualize microbes, and while many microbes can be seen through it, especially when stained, the detailed structures, such as genetic materials and other organelles, cannot be seen due to its low magnification power, but it is helpful for the overall structure observation.
Hence, the three common microscopic techniques in microbiology are dark field microscopy, bright field microscopy, and phase contrast microscopy, and all these have different types of samples.
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How is grazing food chain different from detritus food chain? Explain with examples.
Answers
How do galaxies probably form?A. collapse theoryB. collide theoryC. some combination of collapse and collide theory
Answers
There are two theorys for the formation of galaxies, the theory of accretion that blobs of stars came together to form galaxies, and the collapse theory that says that galaxies are formed by the collapse of an enormous gas cloud. While collide theory says that large galaxies absorbs smaller galaxies, being more ralated to galaxies destruction than creation. Therefore, the alternative A. collapse theory is the correct one as a definition of galaxies formation.
25 POINTS PLEASE HELP. Check the correct column(s) for each description *
Prokaryotes
Eukaryotes
Contains cytoplasm
Do NOT have membrane-
bound organelles
Cells do NOT have a nucleus
Can be unicellular or
multicellular
Have ribosomes
Have cell membranes
Have genetic material
(DNA/RNA)
Plants and animals
Answers
Answer:
1. Both
2. Prokaryotes
3. Prokaryotes
4. Eukaryotes
5. Both
6. Both
7. Both
8. Eukaryotes
Genes are passed down from parents to offspring. Tor F
Answers
Answer:
True
Explanation:
Which is the end result of cytokinesis from a cell undergoing mitosis?
a. one cell that has two identical copies of DNA
b. one cell that has two different copies of DNA
c. two cells that have two identical copies of DNA
d. two cells that have two different copies of DNA
Answers
Answer: C two cells that have two identical copies of DNA
Explanation: Took the test!
Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identifies a difference in the structure of proteins and polysaccharides? *
A. forming a variety of gametes that will pass on hereditary information
B. disrupting meiosis and the synthesis of amino acids into a sequence
C. producing the inorganic molecules needed for normal cell growth
D. directing the synthesis of proteins necessary for proper cell function
Answers
D. directing the synthesis of proteins necessary for proper cell function
I hope this helps a little.
8. Most importantly, adaptations must improve a
species' ability to:
a. Eat
b. Escape threats
c. Get oxygen and water
d. Reproduce
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Answers
how do organisms in an ecosystem depend on detritivores
Answers
Answer:
A detritivore is a heterotrophic organism, which obtains its nutrition by feeding on detritus. Detritus is the organic matter made up of dead plant and animal material. Detritivores may also obtain nutrition by coprophagy, which is a feeding strategy involving the consumption of feces.
Cells have many small objects called (4) _____ that perform specific functions for the cell. Some are found in plant cells, but not animal cells. One example is the (5)_____, which provides support and forms an extra barrier outside of the cell membrane. The (6)_____ contains chlorophyll, which is necessary for a plant cell to produce energy through (7)_____. Plant cells also include a large central (8)_____, which store food, water, and waste. Word bank: organelle, photosynthesis, chloroplast, cell wall, vacuole.
Answers
Answer:
(4) Organelle
(5) Cell Wall
(6) Chloroplast
(7) Photosynthesis
(8) Vacuole
Explanation:
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John and Joshua used a light microscope to observe a plant cell. They indicated the magnification as x1000. Given the eye piece lens magnification x10. Work out the objective lens magnification.
Answers
Answer:
Objective Lens Magnification = ×100
Explanation:
In a microscope, the ocular (eyepiece) lenses are usually to a magnification of ×10, meaning that it magnifies the image 10 times. While the standard objective lenses have magnifications of ×4, ×10, ×40, and ×100.
In order to work out the total magnification, the individual magnifications of the ocular and objective lenses have to be known, after which a simple multiplication of both magnifications will give the total magnification used.
Total Magnification = (eyepiece lens magnification) × (objective lens magnification)
1000 = 10 × obejcetive lens magnification
Dividing both sides by 10
Objective lens magnification = 1000 ÷ 10 = 10
∴ Objective lens magnification = ×100