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bonufazy [111]
3 years ago
11

Which nutrient is required for nearly every chemical reaction in every cell in your body?

Biology
1 answer:
Marysya12 [62]3 years ago
5 0
<span>The complete question includes these choices: a. vitamin B6 b. calcium c. water d. protein The correct answer is c. water. Water has a peculiar chemical structure, with special and unique properties that are crucial for chemical reactions (eg good dissolving properties, resistance to pressure and fluidity throughout changes of state).</span>
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Which of these genes is not a part of the lac operon?
Svetlanka [38]

The lac operon contains an operator, promoter, and structural genes that are transcribed together and are under the control of the catabolite activator protein (CAP) or repressor.The lac operon encodes for the genes needed to utilize lactose as an energy source. Answer is C
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3 years ago
Many of the extracellular signal molecules that regulate inflammation are released locally at the site of infection. What form o
r-ruslan [8.4K]

Answer: Paracrine

Explanation:

Paracrine signaling is a form of cell signaling in which a cell produces a signal that induces changes in nearby cells, altering the behavior or differentiation of those cells. Molecules known as paracrine factors diffuse over relatively short distances (local action), unlike endocrine factors (hormones that travel considerable distances over the circulatory system), juxtacrine interactions, and autocrine signaling.

<u>Cells that produce paracrine factors secrete them into their immediate extracellular environment. </u>These factors then travel to nearby cells where the gradient of the factor received determines the outcome. However, the exact distance a paracrine factor can travel is not known with certainty. Paracrine signaling is a form of cell signaling in which a cell produces a signal that induces changes in nearby cells, altering the behavior or differentiation of those cells. <u>Molecules known as paracrine factors diffuse over relatively short distances</u>, unlike endocrine factors (hormones that travel considerable distances over the circulatory system), juxtacrine interactions, and autocrine signaling.

Cells that produce paracrine factors secrete them into their immediate extracellular environment. These factors then travel to nearby cells where the gradient of the factor received determines the outcome. However, the exact distance a paracrine factor can travel is not known with certainty.

In the case of infection, cells of the innate immune system secrete different cytokines into their immediate extracellular environment that attract other immune system cells such as neutrophils and lymphocytes, to fight the infection.

6 0
3 years ago
Assume for a moment that ambulances carry blood for purposes of transfusion. what blood type would you expect to be in greatest
lara31 [8.8K]

Assuming that ambulances carry blood for purposes of transfusion, the blood type that I would expect to be in greatest supply in an ambulance would be Blood Type O. Blood Type O is dubbed the universal donor (or General donor) because they have there are neither A nor B antigens.

3 0
4 years ago
As a fertilized egg divides , the cells differentiate because they?
Alenkinab [10]

Answer: The fertilized egg divides and the cells differentiate to become all of the different cell types of a human, the DNA molecules of the fertilized egg must be duplicated over and over, so that each of our trillions of cells contains an exact copy of the DNA contained in the fertilized egg.

6 0
3 years ago
Which of the following examples illustrates osmosis?
Ber [7]
An example of osmosis is when the water leaves the tubules of the kidney in response to the hypertonic fluid surrounding the tubules. Osmosis in the kidneys is a filtration. Osmosis will filter the water molecules and solutes in the kidneys from the plasma to the tubule. The other choices given are not an example of osmosis. The correct answer to this question is A. 
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3 years ago
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