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3 years ago

Which of these engulf bacteria and break them down?

Biology

2 answers:

Kamila [148]3 years ago

7 0

Answer:

B. phagocytes

Explanation:

Phagocytosis is a process wherein a cell binds to the item it wants to engulf on the cell surface and draws the item inward while engulfing around it. The process of phagocytosis often happens when the cell is trying to destroy something, like a virus or an infected cell, and is often used by immune system cells.

daser333 [38]3 years ago

4 0

Answer:

B. phagocytes

Explanation:

took the test

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Why do the components of maternal cytoplasm influence early development?

Vladimir [108]

I think the answer is letter A. I hope this helps and i would have someone check this to make sure it's the correct answer for sure.

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3 years ago

Why does DNA flow toward the positive electrode of the gel chamber?

Digiron [165]

Answer:

DNA molecules have negative charges, and so when placed in an electric field they migrate toward the positive pole.

Explanation:

Electrophoresis is a technique that uses differences in electrical charge to separate the molecules in a mixture. DNA molecules have negative charges, and so when placed in an electric field they migrate toward the positive pole. The rate of migration of a molecule depends on two factors, its shape, and its charge-to-mass ratio.

A gel, which is usually made of agarose, polyacrylamide, or a mixture of the two comprises a complex network of pores, through which the DNA molecules must travel to reach the positive electrode. The smaller the DNA molecule, the faster it can migrate through the gel. Gel electrophoresis, therefore, separates DNA molecules according to their size.

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3 years ago

A bird catches and tries to eat a caterpillar. The caterpillar has a bad taste, so the bird lets the caterpillar go. The next ti

NNADVOKAT [17]

Answer:

The correct option is trial and error learned behavior

Explanation:

A trial and error learned behavior is a type of behavior in which an organism attempts to or tries something new which makes it (the organism) accept the reality of that thing or situation. This means that if the attempt is successful or pleasurable, the organism will attempt it again and if it's not, the organism will avoid that thing.

This is what was described in the question with the bird trying to eat the caterpillar but found it unpleasurable which made it to start avoiding it afterwards.

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3 years ago

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Genrish500 [490]

Basically because your skin has several layers to it (see link, below), and the layer that has the blood vessels capable of bleeding in it is further down than a superficial scrape would affect.

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4 years ago

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nika2105 [10]

Answer:

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Explanation:

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3 years ago