Which of the following sequences on a DNA molecule would be complementary to GCTTATAT?

A. TAGGCGCG

B. ATCCGCGC

C. CGAATATA

D. TGCCTCTC

Answer Explanation:

Therefore, the Correct Answer is C.

Q #1: The Life Cycle of HIV 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. Receptor proteins located on the surface of the virus

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

C. Reverse transcriptase, an enzyme encoded by the virus

D. The phospholipids found on the envelope of the virus

Answer Explanation

The AIDS virus (HIV virus) is Class VI or Group VI in the Baltimore Classification. Based on the Baltimore Classification, this specifically involves the reverse transcriptase enzyme and it is encoded by the virus.

This is the enzyme that will produce DNA molecules from the viral RNA. This is the mechanism involved where it will use the reverse transcriptase enzyme to insert viral DNA into the genetic material of the host cell.
Q #2: Which of the following vessels carries oxygenated blood?

A. Inferior vena cava

B. Pulmonary vein

C. Pulmonary artery

D. Superior vena cava

Answer Explanation

Pulmonary vein carries oxygenated blood from the lungs to the heart. Pulmonary artery carries deoxygenated blood from the heart to the lungs.
Superior and inferior vena cava bring in deoxygenated blood from all other parts of the body to the heart.
Q #3: Which of the following statements best supports the hypothesis that viruses can cause cancer?

A. Cellular DNA has sequences related to viral sequences

B. Cancerous and normal cells share genetic sequences

C. Genes that regulate cell division are found in some viruses

D. Viruses and cancer cells both replicate rapidly

Answer Explanation

Cancer is a condition caused by unregulated division of abnormal cells in parts of the body. For a virus to survive in an organism, it must enter into the host’s cell and take control of the cell’s most activities in order to be able to reproduce and replicate.

Some of the viruses achieve this by inserting their DNA or RNA to that of the host cell. This has a highly likelihood of affecting the DNA or RNA of a host (living organism) which alters their genes, which may lead to host cells becoming cancerous.

For this reason, viruses can cause cancer because the genes that regulate cell division in host cell are found in some viruses.

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Which of the following sequences on a DNA molecule would be complementary to GCTTATAT?

More Questions on TEAS 7 Science

Q #1: The Life Cycle of HIV 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 #2: Which of the following vessels carries oxygenated blood?

Answer Explanation

Q #3: Which of the following statements best supports the hypothesis that viruses can cause cancer?

Answer Explanation

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