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Andrei [34K]
2 years ago
11

Differentiate Humoral immunity vs cell mediated immunity

Biology
1 answer:
trapecia [35]2 years ago
4 0

Answer:

Cell-mediated immunity develops through a network of interactions that results in defense against microorganisms that survive within phagocytes or other cells. The response is initiated by the recognition of intracellular microorganism antigen by T cells through the histocompatibility complex. In the CD8 response, only the target cell carrying the class I associated antigen can be lysed or induced to apoptosis. In another mechanism of the cellular response, CD4 + Th1 T cells activate, for example, cytokine-infected macrophages such as IFN. When a pathogen resists the effects of activated macrophages, chronic infection may develop.

The hormonal immunity response leads to the destruction of extracellular microorganisms and prevents or decreases the spread of intracellular cells by neutralizing, opsonizing and activating the complement system.

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2 years ago
Distinguish between the terms evaporate and precipitate
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Answer:

When solid water is exposed to enough heat, it will melt and return to a liquid. As that liquid water is further heated, it evaporates and becomes a gas—water vapor. ... When it is cool enough, the water vapor condenses and returns to liquid water. These water droplets eventually gather to form clouds and precipitation

Explanation:

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2 years ago
What is the size of an organism most likely determined by?
ss7ja [257]
(C) it's genes and it's environment.
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3 years ago
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egoroff_w [7]

Sexual reproduction produces genetically different offsprings which do possess variations, hence better chance to survive in the environment.

Option C

<h3><u>Explanation:</u></h3>

Sexual reproduction is the process of reproduction where there's a fusion of gametes from a male and female of the same species, resulting in a zygote and eventually an offspring. Sexual reproduction is very advanced type of reproduction which is very expensive for an organism. Much of the energy of the organism is spent to produce gametes and other necessary processes for reproduction.

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Scientific study of the population cycles of the snowshoe hare and its predator, the lynx, has revealed that
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This scientific study revealed that predation is the dominant factor affecting prey population on cycling. Population cycles is the feature where populations rise and fall over a predictable period of time. For example there are some species where population numbers have reasonably predictable patterns of change. From the study depicted in the question; when snowshoe hares are scarce, many lynx leave their home range in search of food. An increased predation of the hare due to high populations of lynx and other predators increases the decline in the hare population.
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