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Dmitry_Shevchenko [17]
2 years ago
11

If this particular antigen attempts to re-infect Caleb, it’s in for a bigger fight. By getting activation of adaptive immune cel

ls such as B-cells and T-cells, the body generates an extra layer of protection. What is a critical advantage for Caleb the next time he encounters this antigen?
Biology
1 answer:
FromTheMoon [43]2 years ago
3 0
Caleb’s immune system will have the experience of getting rid of this antigen and know exactly what to do to overcome it efficiently.
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Even though an organism's outside environment may change,conditions inside an organism's body must stay the same in order for th
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Answer:

homeostasis

Explanation:

Homeostasis is a biological phenomenon in which living organisms maintain a stable internal environment irrespective of the changes in their external environment. This process is key to every other activities pertaining to the survival of an organism.

Hence, according to this question, HOMEOSTASIS is the internal process organisms undergo in order to ensure that their internal conditions stay the same even though their outside environment may change. For example, humans maintain a stable internal temperature despite cold weathers.

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2 years ago
Which hormone’s secretion is controlled by a positive feedback mechanism?.
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oxytocin

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The release of oxytocin from the posterior pituitary gland during labor is an example of positive feedback mechanism. Oxytocin stimulates the muscle contractions that push the baby through the birth canal

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Animals store most of their excess energy reserves as _______ because
Yuri [45]
They store it as adipose tissue because it also provide heat, insulation, and protection.
5 0
2 years ago
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: Cytotoxic T cells are rapid killers of infected target cells. Within minutes of the interaction of a cytotoxic T cell with a t
LiRa [457]

Cytotoxic T cells are rapid killers of infected target cells. Within minutes of the interaction of a cytotoxic T cell with a target cell, the program of apoptosis in the target cell is initiated. This rapid activity is a consequence of The extremely rapid production of granzymes and perforin by cytotoxic effector cells upon encountering a target cell.

  • A type of T cell known as a cytotoxic T cell (CD8+ T cell) is in charge of removing things that the immune system recognizes as dangerous.
  • Cytotoxic T cells are essential for controlling bacterial growth and illnesses in the body.
  • By instructing their targets to undergo apoptosis, cytotoxic T lymphocytes kill their prey.
  • Cytotoxic T cells can instruct antigen-specific target cells to die within 5 minutes of coming into contact with them when they are mixed with target cells and quickly brought into contact by centrifugation.
  • The speed with which cytotoxic T cells can induce apoptosis in their targets is due to the release of prepared effector molecules that trigger the target cell's own endogenous apoptotic pathway.

learn more about Cytotoxic T cells here: brainly.com/question/9292555

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8 0
1 year ago
If a sudden outbreak of disease severely reduced the number of coyotes in an ecosystem very rapidly, what might the resulting ch
Nikitich [7]

Answer:

Over population

Explanation:

With the coyotes gone, they're prey will have little to no predators. Without their numbers decreasing as quickly (because of the coyote population drop) they will be able to repopulate quicker and less of them will die. This will lead to over population.

6 0
3 years ago
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