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frozen [14]
3 years ago
13

1.Compare and contrast communication by molecular signal with communication by enzyme-linked receptor.

Biology
2 answers:
irakobra [83]3 years ago
7 0
They are different because they use different frequency
Alchen [17]3 years ago
6 0

they are different because they use different frequency

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Which one of the following statements is true? A. Voluntary hyperventilation results in acidosis. B. Emphysema directly impairs
AlekseyPX

Answer:

The correct answer is option E.

Explanation:

Voluntary hyperventilation results in alkalosis, not in acidosis. Alkalosis takes place when the body possesses too many bases. It can take place due to decreased levels of carbon dioxide or due to enhanced level of bicarbonates in the blood, that is, a base.  

Emphysema directly impairs exhalation more than it directly impairs inhalation. Emphysema refers to a lung disorder, which leads to shortness of breath. In the individuals suffering from the condition, the air sacs in the lungs, that is, alveoli get damaged.  

The hemoglobin-oxygen dissociation curve shifts to the right at the time of metabolic acidosis. The low partial pressure of oxygen within the lungs results in the constriction of pulmonary arterioles. Thus, all the mentioned statements are false.  

8 0
2 years ago
Which of the following is NOT a function of the hypothalamus? Which of the following is NOT a function of the hypothalamus? regu
lesya692 [45]

Answer: regulate the thalamus

Explanation:

The hypothalamus does not regulate the function of the thalamus, rather it is found below the thalamus where it helps control appetite or feeding; body temperature; the amount of water in the blood (known as osmo-regulation); and sleep rhythms.

Thus, the hypothalamus does not regulate the thalamus.

4 0
3 years ago
Propose a question that a scientist might ask about the variety of organisms found around deep-sea vents.
olga_2 [115]
- How do the organisms get energy from the deep-sea vents?
- How are the organisms able to live under the water pressure?
- Are the organisms mostly producers or consumers?
6 0
3 years ago
Compare the shapes of the organisms that have cell walls with those that do not have cell walls.
inna [77]
The best answer is A. The purpose of the cell wall is to hold the cell in a specific shape, usually rectangular or square. For example, a plant cell's wall keeps it rigid so that the plant can stand up. 

If the cell does not have a wall, it can easily change shape to accommodate for things coming in and out of the cell. 

Hope this helps!
5 0
3 years ago
Which amino acids are the primary nitrogen donors for biosynthetic reactions in the cell?
prohojiy [21]
Glutamine and glutamate are the primary nitrogen donors for biosynthetic reactions in the cell.  Glutamine is an α-amino acid that is used in the biosynthesis of proteins. Its side chain is similar to that of glutamic acid, except the carboxylic acid group is replaced by an amide. It is classified as a charge-neutral, polar amino acid. It is non-essential and conditionally essential in humans, meaning the body can usually synthesize sufficient amounts of it, but in some instances of stress, the body's demand for glutamine increases, and glutamine must be obtained from the diet. Glutamate is generally acknowledged to be the most important transmitter for normal brain function. Nearly all excitatory neurons in the central nervous system<span> are glutamatergic, and it is estimated that over half of all brain synapses release this agent. Glutamate plays an especially important role in clinical neurology because elevated concentrations of extracellular glutamate, released as a result of neural injury, are toxic to neurons</span>
5 0
3 years ago
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