A compound that consists mainly of carbon and hydrogen is known as (a) _____________.
A. polymer
B. hydrocarbon
C. hydrolyte
D. glucose
E. organic
Answer: E
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It is believed that the coelacanths and lungfish represent a crucial link between other fishes and tetrapods. What is the major feature in these fish in support of this hypothesis?
A) Like amphibians, they are tied to the water for reproduction. B) Their fins have skeletal and muscular structures similar to amphibian limbs. C) They have highly evolved nervous and circulatory systems. D) They have lungs and are able to breathe air when water is scarce. E) They enter a hibernative stage when food is scarce, as many tetrapods do.
Deciduousness is an adaptation of plants to dry environments
Indicate whether the statement is true or false
A cell with a diploid number of 24 fails to undergo cytokinesis while performing mitosis, so the daughter cells do not form. How many chromosomes will be in the resulting cell?
A) 96 B) 48 C) 24 D) 12
At equilibrium, the gas molecules that dissolve in solution and those that remain in the gaseous phase are, by definition, at the same
A) concentration. B) temperature. C) volume. D) humidity. E) partial pressure.