Which is not true of viruses?
A. They replicate only inside host cells.
B. They are acellular.
C. They infect animal and plant cells only.
D. They can exist in an intracellular or extracellular phase.
E. They can be observed with an electron microscope.
Answer: C
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To reproduce, many plants produce seeds-structures containing embryonic offspring along with nutrients inside a tough case. These offspring develop after being released by the parent plant
To which animal reproductive strategy is seed production most comparable? A) oviparous reproduction B) ovoviviparous reproduction C) viviparous reproduction
Mutualism is a relationship
A) that sometimes provides benefits for both members such that one or both parties cannot live without the other. B) where only one member derives benefit from the other. C) where one member of the relationship may kill the other. D) where one member of the relationship benefits without hurting the other. E) where it is difficult to prove the benefits or disadvantages one member of the relationship may provide for the other.
When generating a cDNA library, one may get different sequences returned if samples are taken at different times. Why is this the case?
What will be an ideal response?
In the absence of oxygen, can cells utilize the electron transport chain?
A. Yes, all cells can make use of the electron transport chain in the absence of oxygen via fermentation. B. No, oxygen is a required cofactor for the complexes in the electron transport chain. C. Yes, in the case that a cell can use a terminal electron acceptor other than oxygen, it can make use of the electron transport chain. D. No, oxygen is the primary electron acceptor in electron transport chains in all cell types.