If before treating barley seeds with GA, the seed coat and aleurone layers were physically removed, then what would you expect:
A) An enhancement of the breakdown of starch by GA, as GA would longer need to penetrate the aleurone layer.
B) A reduction in starch breakdown.
C) An increase in the release of amylase.
D) The release of more glucose that is needed by the embryo for germination.
Ans: B) A reduction in starch breakdown.
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Charles Darwin noted that the human lineage probably arose out of Africa. Which of the following was most likely the reason behind his hypothesis?
A. Africa has warmer temperatures, which allows for greater diversity. B. Gorillas and chimpanzees, which are the primates most closely related to humans, only live in Africa. C. Africa was the first land mass that was suitable for life. D. This was before the advent of molecular analysis, so Charles Darwin was incorrect. E. None of the answer options are correct.
Which one of the following is TRUE regarding the spleen?
A) It is located in the lower portion of the thoracic cavity. B) Red pulp of the spleen stores excess blood. C) White pulp of the spleen contains macrophages that kill microorganisms circulating in the lymph. D) Red pulp of the spleen contains primarily lymphocytes. E) The spleen has the same functions as the tonsils.
Color-blindness is inherited as an X-linked recessive trait. A male who is color-blind marries a heterozygous woman. What percent of their total children will be color-blind?
a) 0% b) 100% c) 25% d) 50% e) 75%
If you get seasick, the rotational equilibrium pathway is confused.
Answer the following statement true (T) or false (F)