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Natalka [10]
2 years ago
15

How does phase contrast microscopy help scientists to visualize difficult specimens?

Biology
2 answers:
fredd [130]2 years ago
8 0

Answer:

The asnwer is Allows observation and study of living cells.

Explanation:

The phase contrast microscope allows observation of uncolored cells, which is very useful for the study of living cells. This type of procedure helps scientists study difficult samples, because most living organisms cannot be dyed or colored, since the dyes used could damage their cell structure and even cause them to die.

Oksanka [162]2 years ago
4 0
The phase contrast microscope uses out-of-phase and in-phase light rays that produce contrast areas allowing scientists to detect even a minute number of protein molecules and focus on the minute internal structures of a particle.  
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tatiyna

Answer:

The correct answers are A and D

Explanation:

8 0
3 years ago
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Question 4
JulsSmile [24]
Traits favorable for survival
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2 years ago
In humans, having wet earwax is a dominant trait. Having dry earwax is recessive.
antiseptic1488 [7]
His phenotype should be wet earwax
5 0
2 years ago
Differentiate between the lithosphere and asthenosphere
allsm [11]

Answer:

Lithosphere made the earth outermost layer, crust and upper portion of mantle.

Asthenosphere made the middle layer of earth.

Explanation:

Lithosphere:

Lithosphere made the earth outermost layer, crust and upper portion of mantle.

It is made up of tectonic plates.

Lithosphere present over the asthenosphere.

Lithosphere have low temperature as compared to asthenosphere.

Its rocks are rigid.

It is less viscous and dense

Asthenosphere:

Asthenosphere made the middle layer of earth.

When material present in asthenosphere solidify it becomes the part of lithosphere.

Asthenosphere have high temperature as compared to the lithosphere.

Its rocks are plastic and have tendency to flow.

It is more viscous and dense.

3 0
3 years ago
Which of the following statements is NOT true of the endocrine system? Most of its components are anatomically connected, like m
katen-ka-za [31]

Answer:

Most of its components are anatomically connected, like most other systems of the body.

Explanation:

The endocrine system takes care of the bodily processes that take place slowly. The nervous system and the endocrine system are independent systems, although they usually work together to help the body function properly.

The endocrine system is made up of glands that make hormones.

The main glands that make up the human endocrine system are the hypothalamus, pituitary, thyroid gland, parathyroid glands, adrenal glands, pineal gland, and reproductive glands, including the ovaries and testes. The pancreas is also part of this system and they are distributed throughout the body, connecting only through the circulatory system.

3 0
3 years ago
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