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zhuklara [117]
3 years ago
12

The first cell type likely to respond to invasion by a pathogenic microbe is

Biology
1 answer:
miv72 [106K]3 years ago
8 0
Hello, and good afternoon. Great question. Moreover, the only immunization cell type responders are the white blood cells that usually release pathogenic eradicators called antibodies.
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The folds in the brain that store memories are called the__________________
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Which of these is NOT something found in the fossil record that has been used by scientists to understand human evolutionary pat
Makovka662 [10]

Answer:

The correct answer is option (d)-"All of these are found in the fossil record and have been used by scientists to understand human evolution".

Explanation:

There is plenty of evidence that supports the proposal of how humans has evolved during past times. The fossil records that scientists has used understand human evolutionary patterns include the following. Ardipithecus ramidus bones  that revealed advances in upright walking, even tough they had a small brain that measured between 300 and 350 cm3. Australopithecus lack of an opposable big toe suggest that they lived on the ground instead of in trees. Homo erectus was the first species to use and control fire, as suggested by evidence of microscopic traces of wood ash.

6 0
3 years ago
During aerobic respiration, electrons travel downhill in which sequence?
iris [78.8K]

Answer:

The correct answer will be option-B.

Explanation:

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The process proceeds in four steps: glycolysis, link reaction, Krebs cycle and electron transport chain.

The energy molecules are produced when a high energy electron gets reduced and the released energy is stored in the form of energy molecules which could be ATP or energy equivalents like NADH and FADH₂.

These reducing equivalents donate its electrons during electron transport chain where the electrons flow to the last electron acceptor called oxygen.

Thus, Option-B is the correct answer.

3 0
3 years ago
What do the amplitude and frequency of a sound wave determine?
pychu [463]

Answer:

The larger the amplitude of the waves, the louder the sound. The faster the vibrations, the higher the pitch (frequency) of the sound.

Explanation:

6 0
2 years ago
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