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kodGreya [7K]
3 years ago
8

Help I’m being timed

Biology
1 answer:
sasho [114]3 years ago
5 0
I believe it’s the third answer but I’m not 100% sure.
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Antibodies that act against a particular foreign substance are released by ________. antibodies that act against a particular fo
MissTica
The correct answer is "plasma cells". 

Plasma cells are differentiated or mature B cells capable of producing antibodies against a particular foreign substance. B cells are stimulated to differentiate into plasma cells when it binds to two receptors of helper T cell; having the T cells "help" the B cells to differentiate to plasma cells. These T cells have the antigenic information passed to them by antigen presenting cells such as dendritic cells and these will be passed to the B cells and plasma cells will produce antibodies against this specific antigen.
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3 years ago
The movement of water across a membrane moving with the concentration gradient is called
Likurg_2 [28]

Answer: B

Explanation: Osmosis is the movement of water through a semipermeable membrane according to the concentration gradient of water across the membrane, which is inversely proportional to the concentration of solutes.

7 0
2 years ago
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Describe the process in which trees communicate with one another
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Trees share water and nutrients through the networks, and also use them to communicate. They send distress signals about drought and disease, for example, or insect attacks, and other trees alter their behavior when they receive these messages.

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2 years ago
What happens in the ovlduct?<br> Implantation<br> Cleavage<br> Ovulation<br> Fertilization
Eduardwww [97]

Answer:

Hello! Your answer would be, D)Fertilization

Explanation:

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75%

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