How does a scientist get the corrected version of a gene into the cells of a gene therapy patient?
A) It is delivered with a modified virus.
B) It is directly injected with a microscopic hypodermic needle.
C) It is attached to a food molecule, such as glucose and is then ingested by the individual.
D) It is attached to the surface of microscopic beads and is then shot into the individual (i.e., shotgun method).
A
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The border across which genes can flow between two populations is called the
a. contact zone. b. parapatric zone. c. zone of speciation. d. demilitarized zone. e. zone of polyploidy.
The composition of lipids in the outer and inner monolayers of cell membrane lipid bilayers is
A) asymmetrical; i.e., different in each monolayer. B) identical in each monolayer. C) twice as concentrated in the inner monolayer as in the outer monolayer. D) highly random for each monolayer. E) the same for all cell plasma membranes but different from the composition in mitochondrial and chloroplast membranes.
Select all of the accessory organs of the human digestive system.
A) esophagus B) stomach C) gallbladder D) small intestines E) liver
Motility may involve
A) movement of a cell/organism through its environment. B) movement of the environment past a cell. C) movement of components within a cell. D) shortening of a cell. E) All of the above are correct.