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horrorfan [7]
3 years ago
11

What is the name for the protective structure that forms around an embryo?

Biology
2 answers:
tatuchka [14]3 years ago
7 0
Yesss you’re answer is D
Ket [755]3 years ago
3 0
The name for the protective structure that forms around and embryo is called an placenta
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A scientist studied the effect of exposing DNA to various wavelengths of ultraviolet light and determined the number of copying
Murljashka [212]

Answer:

C. 275 nm

Explanation:

At 275 nm of ultraviolet wavelengths causes mutation in a skin cell because at 275 nm of wavelength, maximum DNA Copying Errors occur in the cells that leads to mutation in the cell. A mutation is a kind of change that occurs in the DNA, due to two reasons, due to mistakes that is occur when the DNA is copied or as the result of environmental factors such as ultraviolet radiations.

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3 years ago
HELP HELP PLEASE!!!!!!!
postnew [5]

Explanation:

Issen Sengeki... Messatsu!

The answer is 2.

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3 years ago
What does the lymph system do?​
ycow [4]
The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body
5 0
3 years ago
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sexual reproduction in animals depends on the production of gametes. which of these processes producesses gametes in animals
siniylev [52]
Meiosis produces gametes in animals.
Hope that helped you.
3 0
3 years ago
Fossil evidence indicates that the first organisms on Earth were single-called prokaryotes. The first eukaryotes are believed to
icang [17]

The study of fossils shows that the eukaryotic cells have been evolved from the prokaryotic cells. The endosymbiotic theory has been used to study the evolution of eukaryotic cells.

The endosymbiotic theory states that:

  • Endosymbiotic theory is also referred to as the theory of symbiogenesis. The theory explains the evolution of eukaryotic cells from prokaryotic cells.

  • The theory explains the presence of chloroplasts and mitochondria, and how these organelles form the eukaryotic cells. The theory explains the origin of mitochondria in animal cells and chloroplasts in plant cells.

Thus, the endosymbiotic theory defines the development of eukaryotic cells from the prokaryotic cells.

To know more about endosymbiotic theory, refer to the following link:

brainly.com/question/2957447

4 0
3 years ago
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