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Alik [6]
3 years ago
15

When a hormone is present in excessive levels, the number of target-cell receptors my decrease. This is called ____. A. Receptor

recognition B. Paracrine regulation C. Sensory adaptation D. Up-regulation E. Down-regulation
Biology
1 answer:
Ainat [17]3 years ago
4 0

Answer:E. Down-regulation

Explanation:Cells typically up or down  regulate  depending on  the concentration of a hormone levels. When  there is a excessive  concentration of a hormone in the blood stream, the cell decreases the number of receptors reducing  the interaction  with that hormone, Also, when there is excessive  hormone reduction, the  target cells activate to increase their number of receptors.

Down  regulation occurs by the the deactivating or degrading of target cells to reduce the number of  receptors due to their sensitivity to a particular excess hormone.

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Which of the following statements is FALSE regarding water intake and output by the body?
REY [17]

Answer:

The correct option is this: AN INCREASE IN FLUID TAKEN BY MOUTH WOULD REDUCE THE AMOUNT PRODUCED BY METABOLISM.

Explanation:

Generally, the amount of water consumed by a person normally leads to increase in the amount of urine that the person will excrete, that is, the higher the quantity of water consumed, the higher the quantity of the urine that will be excreted under normal circumstances. Thus, the statement given in option B is false. The statements given in Option C and D are right; during exercise the quantity of sweat produce and lost by the body is higher than the one that is produced when one is not exercising. Also, diarrhea usually lead to loss of water from the body.  

3 0
3 years ago
is the study of effects of sunlight on the color of construction paper an experiment in quantitative data?
Misha Larkins [42]
No, studying the effects of sunlight on the color of paper would be an experiment in qualitative data. Quantitative data is based on numbers, a change in appearance is qualitative data. 
4 0
2 years ago
Consider the diagram. mc002-1.jpg Which process is represented? nondisjunction translocation inversion insertion
sladkih [1.3K]

If this is the picture you are talking about, the right answer is non-disjunction

Non-disjunction is the non-separation of homologous chromosomes at the time of cell division which results in the formation of ova or spermatozoa leading to an abnormality in the number of chromosomes of the egg thus fertilized by the spermatozoa.

The fertilized egg consists of either a single chromosome, what is called monosomy, or, conversely, three chromosomes, this is called trisomy. While naturally, the fertilized egg has a single pair of chromosomes.

7 0
3 years ago
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How many letters in a codon?<br> Select one:<br> O 5<br> o 6<br> O 3<br> o 4
lesya692 [45]
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6 0
3 years ago
Xavier drew a diagram to compare the roles of oxygen and hydrogen in photosynthesis.
Elan Coil [88]

Answer:

Is released into the air through stomata

Explanation:

Oxygen and hydrogen both exists as gaseous molecules in the atmosphere. However, one of them (oxygen) is a product of photosynthesis while the other (hydrogen) is one of the constituents of the molecule that starts the process of photosynthesis.

According to this question, the X used in the attached diagram is the role of oxygen in photosynthesis. Oxygen is released as a product of photosynthesis and goes out of the plant into the air via the STOMATA. Hence, the gas released into the air via stomata is OXYGEN.

4 0
3 years ago
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