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igor_vitrenko [27]
2 years ago
13

Who can help me with this please

Biology
1 answer:
alisha [4.7K]2 years ago
8 0
The system of lenses close to the slide is known as the objective and the one on top of the microscope is known as the eyepiece. Answer is eyepiece.
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Genetic diversity is ultimately/mainly the result of _______________
RUDIKE [14]

Answer:

A. meiosis.

Explanation:

Meiosis is one of the two major types of cell divisions in living organisms. Meiosis is the process by which four daughter cells that are genetically different from the parent cell are produced. Meiotic process is carried out solely during sexual reproduction to yield gametes or sex cells.

The gametes have their chromosomal number reduced by half during the process. However, one immense importance of meiosis is that it PROMOTES GENETIC DIVERSITY. A process called crossing over, which is the exchange of chromosomal segment between non sister chromatids, makes this possible.

7 0
2 years ago
Does anyone have a Chegg account?
algol13
No I don’t have it
What is it
5 0
3 years ago
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Which vitamin can be synthesized in significant amounts by humans and, therefore, may NOT be essential
Nadya [2.5K]

Answer:

The correct ansqwer is- Vitamin D

Explanation:

Vitamin D is the vitamin that can be synthesized by the human body itself therefore it is not an essential vitamin for human beings. Human skin is the part that helps in making this vitamin in humans.

The natural form of vitamin D is vitamin D3 which is formed by the sunlight exposure on the skin. When we expose our skin in the sunlight the UV radiation penetrated our skin and converts provitamin D3 into pre-vitamin D3 then this previtamin can be isomerized into the natural form of vitamin D Which is vitamin D3. So the right answer is vitamin D.

5 0
3 years ago
Please answer only if you know this is a final 
Sliva [168]

Answer:

ecosystem

Explanation:

5 0
3 years ago
WHAT ARE THE CHARACTERISTICS OF EUKARYOTIC CELLS?
Shalnov [3]

Answer:

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes. However, unlike prokaryotic cells, eukaryotic cells have: a membrane-bound nucleus. numerous membrane-bound organelles

Explanation:

6 0
3 years ago
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