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TiliK225 [7]
3 years ago
14

What use one reason the air in cities is often polluted

Biology
1 answer:
lana66690 [7]3 years ago
7 0

cars are generally older

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Which of the following is true? Group of answer choices In the brain, neurons are more abundant than neuroglia. An action potent
mr_godi [17]

Answer:

The true statements are:

An action potential never occurs in dendrites.

Norepinephrine is a monoamine.

Explanation:

In the following question only two statements are true that are; an action potential never occurs in dendrites as it occurs in nerves to send signals from cell body and axon and transmit it.

The second correct statement is Norepinephrine is a monoamine as these are particular neurotransmitters dopamine, serotonin, also known as catecholamines sometimes.

Thus, the correct answer is :

An action potential never occurs in dendrites.

Norepinephrine is a monoamine.

6 0
3 years ago
How enzymes inhibitions studies in the formulation and development of drugs​
lesya [120]

Answer:

Enzyme inhibitors may alter the elimination rate of a particular drug or inhibit detoxication pathways

Explanation:

An enzyme inhibitor is a chemical compound capable of binding to an enzyme in order to reduce its activity. An enzyme inhibitor may bind to an active site and thus decreases the rate of reaction (direct inhibition). Enzyme inhibitors may act 1-to Inhibit detoxification enzymes and 2-reduce the elimination rate of enzyme drugs, thereby having dose-dependent toxicity effects. For example, many medicines are based on the inhibition of Cytochromes P450 (CYPs) proteins, which are a superfamily of enzymes required for drug metabolism.

7 0
3 years ago
A woman has two recessive alleles. What is her phenotype? (1 point)
Serjik [45]

Answer:

XX

Explanation:

A women's phenotype will always stay the same as XX.

7 0
3 years ago
Female gametophytes in angiosperms are hidden, and protected. Where are they found, and what are they also called?.
Scorpion4ik [409]

Answer:

They are usually found in the center and they are called embyro sacs.

Explanation:

3 0
2 years ago
How are humans immune to infectious diseases after they have already contracted the disease previously? and How do vaccinations
Varvara68 [4.7K]

Answer:

Explanation:

Immunity to a disease is achieved through the presence of antibodies to that disease in a person's system. Antibodies are proteins produced by the body to neutralize or destroy toxins or disease-carrying organisms. Antibodies are disease-specific. Viruses make us sick by killing cells or disrupting cell function. Our bodies often respond with fever (heat inactivates many viruses), the secretion of a chemical called interferon (which blocks viruses from reproducing), or by marshaling the immune system's antibodies and other cells to target the invader. A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria.  

6 0
3 years ago
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