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son4ous [18]
3 years ago
13

Which of the following instruments produces highly magnified images of a cell’s internal structure but cannot be used to examine

living cells?
Biology
1 answer:
Llana [10]3 years ago
8 0

Answer:

Transmission electron Microscope

Explanation:

It produces thin slices of photography and extremely tiny things. The disadvantages are that its expensive, and you cannot test living things with it, its also massive

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Which is a factor that affects the outcome of an experiment
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The answer: a variable
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Which of the following levels is the least inclusive, smallest, and most specific of the choices? A. Kingdom B. Order C. Family
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<span>The correct answer is C. Family. That is because the only things smaller than family are genus and species and they are not mentioned here. Life and domain are larger than kingdom and kingdom is larger than phylum. Class and order are smaller than phylum but are larger than family. That's why your correct answer is family.</span>
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Answer:

1. Support

2. Protection

3. Movement

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Explanation:

1. Support :  It provides a framework to support the organs and tissues of the body.  

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3. Movement:  It provides a framework for muscles to attach.  Then when the muscles contract they pull on the bones of the skeleton, which act like levers to create movement.

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4 0
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This is the unequal distribution of ions across a cell membrane.
Nady [450]

Answer:

Concentration gradient

Explanation:

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Concentration gradient means that there is unequal distribution of the ions on different sides of membrane. For example, the concentration of K ions is much higher within the cell then out of the cell. Opposite is with the Na ions. When ions move from the area of their higher concentration to the are with the lower concentration, we say they move down the gradient or diffuse (no energy required). On the other hand, movement of ions against their gradient means that this process requires energy and involves protein pumps.

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