Which of the following structures in the female reproductive system secretes hormones to maintain the uterine lining during pregnancy?

Umbilical cord.

Corpus luteum.

Oviduct.

Oocyte.

Answer and Explanation

The Correct Answer is B

The corpus luteum is a structure that develops in the ovary after an egg has been released.

It secretes the hormone progesterone, which prepares the uterus for a fertilized egg to implant and helps maintain the uterine lining during pregnancy.

Choice A. Umbilical cord is not correct because it is a structure that connects the developing fetus to the placenta and provides nutrients and oxygen to the fetus, but does not secrete hormones.

Choice C. Oviduct is not correct because it is a tube that transports eggs from the ovary to the uterus, but does not secrete hormones.

Choice D. Oocyte is not correct because it is an immature egg cell, but does not secrete hormones.

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Correct Answer is A

Explanation

Urea is a substance that is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia.

When proteins are broken down, they produce ammonia, which is a highly toxic compound for the body.

Ammonia is then converted into urea and released out of the body through sweat glands.

Choice B. Sebum is not correct because it is an oily substance secreted by sebaceous glands to lubricate and protect the skin, but it is not related to the breakdown of proteins or the formation of ammonia.

Choice C. Water is not correct because while it is a component of sweat, it is not specifically related to the breakdown of proteins or the formation of ammonia.

Choice D. Lysozymes are not correct because they are enzymes found in tears, saliva and other body fluids that have antibacterial properties, but they are not related to the breakdown of proteins or the formation of ammonia.

A. Cancerous and normal cells share genetic sequences. B. Cellular DNA has sequences related to viral sequences. C. Viruses and cancer cells both replicate rapidly. D. Genes that regulate cell division are found in some viruses.

Correct Answer is D

Explanation

When viruses cause an infection, they spread their DNA, affecting healthy cells’ genetic makeup and potentially causing them to turn into cancer.

For instance, HPV infections cause the virus’ DNA to combine with the host’s DNA, disrupting the normal function of cells.

Choice A is not correct because cancerous and normal cells sharing genetic sequences do not support the hypothesis that viruses can cause cancer.

Choice B is not correct because cellular DNA having sequences related to viral sequences does not support the hypothesis that viruses can cause cancer.

Choice C is not correct because viruses and cancer cells both replicating rapidly do not support the hypothesis that viruses can cause cancer.

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Which of the following structures in the female reproductive system secretes hormones to maintain the uterine lining during pregnancy?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?

Correct Answer is A

Explanation

Which of the following statements best supports the hypothesis that viruses can cause cancer?

Correct Answer is D

Explanation

Parasitic worm infestation is hypothesized to be damaging to the host. However, scientists have recently discovered that worm infestation can relieve the effects of certain autoimmune disorders. In which of the following ways should the hypothesis be modified, given the new findings?

Which of the following microorganisms lack their own metabolic pathways and can only reproduce inside a host cell?

In a phase diagram, which of the following is the term used for a substance held at a temperature and pressure where the solid, liquid, and gaseous states of a substance exist simultaneously?

To separate genomic DNA fragments by size, which of these laboratory methods is most useful?

Which of the following is the process in which an ovarian follicle matures and releases a reproductive egg?

Which of the following allows the AIDS virus, which contains RNA, to insert viral DNA into the DNA of a host cell after the AIDS virus enters the cell?

Which of the following is a group that can be measured against the experimental group?

Which of the following is used to determine a person's DNA sequence?