Which of the following processes is one of sexual reproduction?
a. fission
b. fertilization
c. budding
d. fragmentation
Ans: b. fertilization
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When a DNA molecule is replicated, the daughter molecules contain one strand of parental DNA and one strand of newly synthesized DNA; this is called ________ replication.
A. semiconservative B. dispersive C. hemiconservative D. conservative
The only triploid stage in the life cycle of a flowering plant is the:
A. zygote B. embryo C. endosperm D. egg E. stigma tissue
Typically, female rotifers are larger than males, sometimes up to ten times larger. Thus,
females have a __________ surface-to-volume ratio.
a. larger b. smaller
During an action potential, the membrane potential ____
a. becomes more negative as sodium enters the cell b. becomes more negative as potassium leaves the cell c. becomes more positive as sodium enters the cell d. becomes more positive as sodium leaves the cell e. remains at -70 mV until threshold is reached