DNA is replicated during
a. the G1 stage.
b. the S stage.
c. the G2 stage.
d. prophase.
e. more than one of these
B
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Recall that the age structure histogram (for humans) of India is shaped like a pyramid (Figure 46.8). What does this tell you about India's population?
A. It is shrinking. B. It is growing. C. It is relatively constant. D. It is currently shrinking, but will increase over the next few years. E. It is currently growing, but will decrease over the next few years.
The carcinogenic compound ____, which damages kidneys and the nervous system, is produced by some strains of Aspergillus flavus.
Fill in the blank(s) with the appropriate word(s).
Some companies that produce paper will also produce a by-product that is sold as a binder (something that binds, or holds, things together). From which part of trees does this by-product come?
A) leaves B) mycorrhizae C) lignin D) stomata
Higher intakes of all of the following except ______ are associated with increased bone mass.
a. calcium. b. vitamin D. c. vitamin C. d. sodium.