Once the cloning vector was formed, injecting it into the rose cells could be done by
A. enclosing it in a membrane-bound liposome that fuses with the cell membrane.
B. attaching it to a virus that will infect the plant cell.
C. attaching it to a small bead, and shooting it into the cell with a gene gun.
D. All of these options are possible, but depend on the vector and the receiving cell's properties.
E. electrifying the cell membrane to open a temporary hole among the phospholipids.
D. All of these options are possible, but depend on the vector and the receiving cell's properties.
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What cell type would have a high concentration of motor proteins?
A. liver cell B. mammary cell C. hormone-secreting cell D. muscle cell E. nerve cell
You discover a narrow subterranean river in the outback of Australia and estimate that it is at least 50 million years old, traveling through caves undisturbed by humans. You gather a crew of scientists to perform species sampling of the river as well as metagenomics techniques to calculate microbial diversity. The results indicate that although short in length, the river is extremely diverse. You even get to name a new species of shrimp after yourself! During one of your many interviews, you are asked to explain the high diversity of the subterranean river. What hypothesis would you cite?
A. The time hypothesis. B. The area hypothesis. C. The productivity hypothesis. D. The intermediate disturbance hypothesis.
A type of vesicle that ferries molecules, such as cholesterol, to lysosomes is an
A) endosome. B) episome. C) oprahsome. D) ectosome.
Refer to Figure 44-3. The function of the structure labeled 14 is:
a. to stimulate the ventricles to contract.
b. to pump blood to the lungs.
c. to pump blood into the systemic circulation.
d. to receive blood from the systemic circulation.
e. to receive blood from the pulmonary circulation.