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natka813 [3]
3 years ago
7

Which of the following statements best describes a function of adaptive immunity?

Biology
2 answers:
Semenov [28]3 years ago
6 0
It is (D) it is useful only when an antigen invades a body for the second time
Feliz [49]3 years ago
6 0

Answer: D. It is useful only when an antigen invades a body for the second time.

Explanation: Adaptive immunity, also referred to as acquired immunity, comes into play when innate immunity is breached. Adaptive immunity isn't very helpful in protecting your body when specific bacteria, virus, or any other microorganism enter your body for the first time. Its components function by learning the pathogen and then developing immunity against it. **(The adaptive immune system develops antibodies against the invaded pathogen after the first entry)**. If the same or similar pathogen enters the bloodstream again, your body will have a full-blown defense ready to destroy the pathogen. The mechanism of adaptive immunity is essentially concerned with your body's capability to recognize and destroy substances which it interprets as foreign and harmful... PF.

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trapecia [35]

Answer:

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7 0
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Answer:

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Explanation:

So the answer is B. Hoped i help

8 0
3 years ago
Who is studying animals in the wild considered to be somewhat experimentally out of control
KIM [24]

Studying animals in the wild is considered somewhat experimentally out of control because of several reasons.  

<u>Explanation:</u>

Study of wild animals can be done using several methods but none will be as effective as studying captivated animals. Using stationary cameras is a method to observe animals in the wild. The stationary nature of the camera makes it necessary for the animals to appear within the field of the camera.

This is difficult in places of low animal density. In addition to that placing camera at a longer distance to watch a larger area decreases the resolution of the images. When it comes to shallow water systems, the field imagery used to track the aquatic species frequently gets affected by issues like sun flicker.  

Unmanned aerial vehicles can also be used to track and study animals in the wild. This is good alternative but filming through dense canopies or turbid water is a limitation. Bio loggers can also be used for animal tracking but it is limited by weight since it has to be carried by animals.  

5 0
3 years ago
Meiosis guarantees that in a sexual life cycle, offspring will inherit one complete set of chromosomes (and their associated gen
insens350 [35]

Answer:

HEREDITY ONLY:

none

GENETIC VARIATION ONLY:

none

BOTH:

all

Explanation:

In all the organism that reproduce sexually, produced offspring are genetically varied. As this genetic variation continues, it also leads to hereditary evolution of organism through gene flow from one generation to other. Therefore, the processes of DNA replication, crossing over, chromosome separation and alignment etc. ensure flow of genes from one generation to the next. This does not happen in organisms reproducing asexually.  

6 0
3 years ago
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4 0
3 years ago
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