Excess energy is stored in ____ mainly in ____
a. chemical bonds; adipose tissue
b. chemical bonds; carbohydrates
c. carbon atoms; adipose tissue
d. carbon atoms; carbohydrates
e. hydrogen bonds; water
ANSWER: a
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Can a woman with blood type A have a child with blood type O with a man who is AB?
A) Yes, because of codominance between the IA and IB alleles. B) No, because a man with type AB blood could not contribute an i allele. C) Yes, because of epistasis between the I and the H genes. D) No, because the child's genotype must be ii.
The number of individuals of a species that can be sustained by the resources in a given area defines
a. the carrying capacity of the environment. b. exponential growth. c. the doubling time of a population. d. density-independent factors. e. the biotic potential.
Antigens are substances that the immune system does not recognize as self. Which of the following are antigens?
A) strep throat bacteria B) cancer cells in the lung C) HIV D) All of these can act as antigens.
Your throat is dry, and you want the last cough drop in the box to last a long time in your mouth. What should you do?
A) Break the cough drop into little pieces and put them all in your mouth. Since each little piece must be dissolved separately, the drop will last longer. B) Keep the cough drop whole. This maintains the largest surface-to-volume ratio and slows the dissolution of the cough drop. C) Break the cough drop into little pieces and put them all in your mouth. This decreases the surface-to-volume ratio and slows the dissolution of the cough drop. D) It doesn't matter if the cough drop is in one piece or many pieces; the total amount of cough drop is all that matters.