How does a scientist get the corrected version of a gene into the cells of a gene therapy patient?
A. It is attached to a food molecule, such as glucose and is then ingested by the individual.
B. It is directly injected with a microscopic hypodermic needle.
C. It is attached to the surface of microscopic beads and is then shot into the individual (i.e., shotgun method).
D. It is delivered with a modified virus.
Answer: D
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A cell that allows the complete replication cycle of a virus to take place is said to be a
A) permissive host. B) viral cell. C) dead cell. D) lytic cell.
The following is a list of events involved in the activation of a cell by a steroid hormone. Which one of the following answers best represents the order in which the steps occur?
1. cellular response to the hormone 2. activation of a gene 3. formation of a hormone-receptor complex 4. diffusion of the hormone through a target cell membrane 5. production of a protein A) 4, 3, 2, 5, 1 B) 2, 5, 4, 3, 1 C) 5, 3, 4, 1, 2 D) 2, 5, 1, 3, 4 E) 4, 3, 2, 1, 5
Meroblastic cleavage occurs in _____
A) sea urchins, but not in humans or birds B) humans, but not in sea urchins or birds C) birds, but not in sea urchins or humans D) both sea urchins and birds, but not in humans
The catabolism of glucose begins with one or more of the glycolytic pathways that yield pyruvate.
Answer the following statement true (T) or false (F)