In aerobic respiration, what is the ultimate fate
of the electrons released from the breakdown
of glucose?
a. they are combined with NAD+
b. they are combined with ATP
c. they become hydrogen ions
d. they are moved through the electron
transport chain
e. they are combined with oxygen gas
E
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Changes that have occurred in living organisms over the past four billion years are due primarily to
A. extinction of species. B. continental drift. C. changes in geological periods. D. interaction of genetic and environmental changes. E. the change in the orbit of the moon, causing mass extinction due to volcanic activity.
You discover a new species of lily that has 10 chromosomes (2n=10). Genetic testing reveals that it arose from the interbreeding of two other species of lilies, one of which has 12 chromosomes, and one of which has 8 chromosomes. What is the correct term for the new lily species?
A. autopolyploid B. allopolyploid C. allodiploid D. allotetrapoloid
Which of the following choices is an important function of lipids?
a. energy storage b. insulation c. all of the choices d. cell membrane construction
How do birth control pills prevent fertilization?
A. They prevent follicle development and ovulation. B. They prevent implantation. C. They alter the uterine environment so that sperm cannot survive. D. They inhibit menstruation. E. The provide hCG, indicating that fertilization has already occurred.