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Andru [333]
3 years ago
15

Which of the following statements regarding nonspecific immune responses is correct? A. A nonspecific immune response is the bod

y's first line of defense against invaders. B. The influenza vaccine provides immunity by triggering nonspecific immune responses. C. Nonspecific immune responses involve the use of B and T lymphocytes. D. all of these
Biology
2 answers:
Deffense [45]3 years ago
5 0
Option A is correct answer
aivan3 [116]3 years ago
4 0

The correct answer is option A.

The immune system safeguards the body against the probable harmful materials by reacting and determining the antigens. Antigens are the components situated on the surface of viruses, cells, bacteria, or fungi. The immune system destructs and determines, or attempts to destroy the components, which comprise antigens.

Nonspecific or innate immunity is the defense system with which an individual is born. It safeguards the person against all the antigens. Innate immunity includes barriers, which keep the harmful substances from getting inside the body. These barriers make the first line of defense in the immune reaction.


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Which of the following is NOT an important source of resistance to blood flow? Which of the following is NOT an important source
Luba_88 [7]

Answer:

total blood volume

Explanation:

Resistance to blood flow or vascular resistance refers to the slow down of the blood flow due to friction between the flowing blood and the walls of the blood vessels.

The resistance to blood flow is regulated by the viscosity of blood, total length, and diameter of the blood vessels. Higher blood viscosity imparts more resistance to the blood flow. The reduced diameter of blood vessels also restricts the blood flow through the blood vessels. Similarly, the resistance to the blood flow is directly proportional to the total length of the blood vessels.

However, total blood volume present in the body of the organisms does not affect vascular resistance. The total blood volume affects the blood pressure which in turn would affect the systemic vascular resistance.

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oksian1 [2.3K]
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solong [7]

Answer:

e. is mostly asexual, with sexual as a second option.

Explanation:

Protist are unicelluar eukaryotic  microorganims. Example include:

<u><em>Amoeba</em></u> <u><em>proteus</em></u>

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Budding occurs when a new organism grows from the body of the parent organism. The new organism may separate from the parent or remain attached, forming colonies.

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Sexual reproduction by conjugation requires two parent organisms contributing to the genetic material of the offspring. The essence of conjugation is to produce a new offspring with a wider genetic variability i.e the offspring being genetically different from the parent organisms.

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