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34kurt
3 years ago
12

A white blood cell engulfing a bacterium is an example of _____.

Biology
1 answer:
bagirrra123 [75]3 years ago
3 0

Answer: Phagocytosis

Explanation:

Phagocytosis is the ingestion of cells or particles as a defence mechanism when white blood cells (macrophages) engulf foreign matter such as bacteria and viruses or as part of a digestion process in free-living cells such as amoeba.

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Which of these definitions have been paired with the correct type of cell?
patriot [66]

Answer:

B. Neurons are cells that conduct electrical impulses.

Explanation:

Red blood cells carry oxygen throughout the body. White blood cells protect against pathogens and aid in blood clotting after injury. Blood cells cannot contract.

Neurons generate and conduct electrical impulses. So this one is correct.

Epithelial cells line the cavities and surfaces of blood vessels and organs, protect underlying tissue, regulate the exchange of chemicals, and secrete various substances. They do not react to stimuli, however neurons do.

Smooth muscles helps the skeleton move, smooth muscle is found in blood vessels and some organs, and cardiac muscle helps the heart beat and pump blood. They are however, not components of blood.

3 0
3 years ago
Hamilton’s rule states that:
Papessa [141]

Answer:

The correct answer is option D.

Explanation:

Hamilton rules state that any trait that helps in benefiting others, B, is multiplied by genetic relatedness, R, which is greater than cot to self, C, it is favored by the process of natural selection.

As indicated by Hamilton's rule, the kin selection makes qualities increment in recurrence when the hereditary relatedness of a beneficiary to an actor multiplied by the advantage to the beneficiary is more noteworthy than the regenerative expense to the actor.

Thus, the correct answer is option D.

8 0
3 years ago
The nurse assesses a patient with a heart rate of 42 and a blood pressure of 70/46. what type of hypoxia does the nurse determin
nlexa [21]
<span>The nurse determines this patient is displaying Circulatory hypoxia.Sickle cell anemia can lead to circulatory hypoxia as the cells sickle in the blood vessels and block them. It also produces an anemic hypoxia as the sickled blood cells are removed from circulation.</span>
3 0
3 years ago
Why would it be pointless for reptiles to sit on their eggs to incubate them as birds do? (2 points) Reptiles have teeth with wh
Alika [10]
The correct answer is: 'Reptiles are ectotherms and cannot raise their body temperature above that of the environment'. Birds sit on their eggs to incubate the eggs as the body temperature of the adult bird warms up the eggs. Birds are <span>endothermic homeotherms, and maintain a constant body temperature. In contrast </span>reptiles <span>are ectothermic poikilotherms, and their body temperature depends on the temperature of the outside environment.</span>
6 0
3 years ago
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What is an organic process?​
Elanso [62]

Answer:

Organic Process: a natural process occurring in living organisms

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3 years ago
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