Which of the following is a mass within the ovary that secretes hormones to maintain the uterine lining during pregnancy?

A. Oviduct

B. Corpus luteum

C. Oocyte

D. Umbilical cord

Answer Explanation:

Corpus luteum. The corpus luteum is a temporary structure that forms from the ruptured follicle after ovulation. It produces progesterone, which is a hormone that prepares the endometrium (the inner lining of the uterus) for implantation of a fertilized egg. If pregnancy occurs, the corpus luteum continues to secrete progesterone until the placenta takes over.

Corpus Luteum (Cleveland Clinic)

Therefore, the Correct Answer is B.

Q #1: The pleura is a connective tissue sheath that covers which of the following organs?

A. Lung

B. Heart

C. Spleen

D. Liver

Answer Explanation

The pleura is a thin membrane that surrounds the lungs and lines the chest cavity. It protects the lungs from friction and infection, and helps them expand and contract during breathing. The other organs listed are not covered by the pleura, but by other types of connective tissue sheaths, such as the pericardium for the heart, the peritoneum for the spleen and liver, and the mesentery for the intestines.
Q #2: Which of the following allows the AIDS virus, which contains RNA, to insert viral DNA into the DNA of a host T-cell after the AIDS virus enters the cell?

A. Reverse transcriptase, an enzyme encoded by the virus.

B. Receptor proteins located on the surface of the virus.

C. The phospholipids found on the envelope of the virus.

D. The protein that makes up the capsid of the virus.

Answer Explanation

Reverse transcriptase, an enzyme encoded by the virus. This enzyme can convert the viral RNA into DNA, which can then integrate into the host cell's genome and hijack its machinery to produce more viruses. The other options are not relevant to this process. Receptor proteins are involved in binding the virus to the cell membrane, but they do not insert viral DNA into the cell. The phospholipids and the protein capsid are structural components of the virus, but they do not have any enzymatic activity.
Q #3: Which of the following reasons explains why it is important for new scientific findings to be published?

A. Publishing findings will help scientists become more biased.

B. This prevents other scientists from performing similar tests.

C. Scientists will get paid if their findings are published.

D. Other scientists can validate or disprove the findings.

Answer Explanation

One of the essential aspects of scientific inquiry is the communication of results to peers and the public. Publishing new scientific findings allows other scientists to review, replicate, or challenge the methods and conclusions of a study. This way, science can advance by building on previous knowledge and correcting any errors or inconsistencies.

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Which of the following is a mass within the ovary that secretes hormones to maintain the uterine lining during pregnancy?

More Questions on TEAS 7 Science

Q #1: The pleura is a connective tissue sheath that covers which of the following organs?

Answer Explanation

Q #2: Which of the following allows the AIDS virus, which contains RNA, to insert viral DNA into the DNA of a host T-cell after the AIDS virus enters the cell?

Answer Explanation

Q #3: Which of the following reasons explains why it is important for new scientific findings to be published?

Answer Explanation

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