If one reproductive strategy of a eukaryotic organism is gamete fusion, what can be concluded about that organism?
A. The organism participates in horizontal gene transfer.
B. Progeny organisms are identical to each other.
C. The organism participates in vertical gene transfer.
D. The organism reproduces asexually.
Answer: C
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Which of the following groups include organisms that are a key source of food in all aquatic environments and whose fossilized forms are used as a filter and as a grinding and polishing agent?
A) diatoms B) brown algae C) amoebas D) dinoflagellates
Why does the citric acid cycle only operate in the presence of oxygen?
A) Oxygen must combine with carbon to form carbon dioxide. B) Oxygen allows the electron transport chain to receive electrons from NADH and FADH2, and recycle NAD+ and FAD back to the citric acid cycle. C) Oxygen accepts the ATP from glycolysis so that it can be recycled. D) Oxygen is added in the form of water to the citric acid cycle. E) Oxygen allows the electron transport chain to receive electrons from NAD+ and FAD, and recycle NADH and FADH2 back to the citric acid cycle.
How does the reproduction of HIV and lambda phage differ?
A. HIV contains reverse transcriptase enzyme, while lambda phage does not. B. Immediately after HIV enters the cell, reverse transcriptase RNA is transcribed into DS DNA. Lambda phage reverse transcriptase DNA is integrated immediately into the host genome. C. HIV contains integrase, while lambda phage does not. D. HIV attaches to specific proteins on the cell surface, while lambda phage does not. E. Lambda phage attaches to specific proteins on the cell surface, while HIV does not.
Early failures of gene therapy included two children who developed ____________________ after receiving gene therapy for X-linked SCID
Fill in the blank(s) with correct word