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Advocard [28]
3 years ago
12

Which of the following is thought to be engulfed by prokaryotes eventually leading to the development of plant cells?

Biology
1 answer:
Airida [17]3 years ago
3 0

Answer:

Cyanobacteria

Explanation:

Cyanobacteria contributes to the origin of plants.

Scientists speculate that prokaryote engulfed a photosynthetic cyanobacterium that evolved into modern-day chloroplasts.

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The term Southern Oscillation most nearly refers to which of the following?
Yuki888 [10]

The term Southern Oscillation most nearly refers to a reversal of wind direction

Answer: Option D

<u>Explanation: </u>

Southern Oscillation, a component of the atmosphere in one large-scale interaction called El Niño / ENSO. The equatorial cycle fluctuates after irregular periods of about many years in response to alter in atmospheric pressure in the tropical Indo-Pacific.

With the weakening of the east-west wind during the southern oscillation phase, warm water may slide back west, increasing the flow of the equator up. Surface water temperatures and sea levels fall west and rise east, which is why this event is called El Niño.

6 0
3 years ago
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What is on a transplanted organ that causes the transplant recipient's body to reject it?
Delvig [45]

Answer:

Major histocompatibility complex (MHC) antigens

Explanation:

The process in which recipient body rejects the transplanted organ is called a allograft rejection or transplantation rejection.

A transplanted organ contains Major histocompatibility complex (MHC) antigens which are required to be accepted by the recipient's body to function properly but T cells in recipient's body become alloreactive and recognize MHC antigens (donor-derived antigens) as foreign and starts making antibodies against it. Which means the recipient's body is rejecting the  transplanted organ.

Hence, the correct answer is "Major histocompatibility complex (MHC) antigens".

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What substance acts to prevent sudden pH changes in bodliy fluids?
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