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krok68 [10]
3 years ago
15

Which of these statements about trophoblast is false?

Biology
1 answer:
lukranit [14]3 years ago
7 0

Answer:

The statement C that says ''is derived from the inner cell mass'' is false.

Explanation:

The trophoblast is a structure composed of a set of cells (cytotrophoblast and syncytiotrophoblast), which are shaping the outer layer surrounding a blastocyst, during the earliest stages of embryonic development that mammals pass.

The trophoblast provides nutritive molecules to the developing embryo and facilitates its implantation to the uterine wall due to its ability to erode the tissues of the uterus, that is, it is responsible for making it possible for the embryo to be implanted in the uterine endometrium. Thus, the blast can join the cavity formed by the uterine wall, where it will absorb nutrients from the fluid from the mother.

During the third week, embryonic development includes the development of the trophoblast. At the beginning, the primary villi are formed by the internal cytotrophoblast which is surrounded by the outer layer of syncytiotrophoblast. Then, the cells found in the embryonic mesoderm are directed to the primary villous in the third week of gestation and when it ends, the mesodermal cells begin to be singled out to form blood vessel cells.

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Karen is a forensic scientist whose purpose is to identify and evaluate physical evidence. Which of the following tasks does she
Gwar [14]

Answer: A. reporting results of scientific analysis.

A physical evidence, also called real evidence. It is a tangiable evidence, which can be touched, picked and collected from the scene of crime or any other place. It can be used to prove a crime has occurred. Physical evidences includes fingerprints, footprints, fibers, paint and building materials.

A specimen sample is taken from the suspects or victims and compared with suspected samples obtained from the scene of crime. The comparitive analysis of physical evidences can be used as a scientific evidence against criminal.

Therefore, reporting results of the scientific analysis is the task she should perform.

3 0
3 years ago
The diagram below compares the amounts of common elements found in the
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Answer:

C. Oxygen & Hydrogen.

Explanation:

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3 0
3 years ago
Which two statements are true for the leading strand in DNA?
Nitella [24]
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Hope This Helps
5 0
3 years ago
Read 2 more answers
Choose one of the bubbles state whether you think we should develop this technology, and explain your reasoning
Mila [183]

Answer:

The green buble

Explanation:

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Because all uses of antimicrobial drugs, animals contribute to the development of antimicrobial resistance, it is important to use these drugs only when medically necessary.

the production (e.g. growth enhancement) purposes as well as for the treatment, control or prevention of animal diseases. Even today, it is not entirely understood how these drugs make animals grow faster. The drugs are primarily added to feed, although they are sometimes added to the animals’ drinking water.

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What does classify mean in scientific terms
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