Until Europeans began worldwide colonial activities about 500 years ago, humans had not introduced exotic species anywhere.
a. true
b. false
Ans: b. false
Biology & Microbiology
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Which of the following statements describes a eukaryotic chromosome?
A) a single strand of DNA B) a series of nucleosomes wrapped around two DNA molecules C) a chromosome with different numbers of genes in different cell types of an organism D) a single linear molecule of double-stranded DNA plus proteins
Biology & Microbiology
Cadherins are associated with ________ junctions.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Figure 53-6 represents the age structure diagram of:
a. the transition stage. b. the preindustrial state. c. a moderately developed country. d. a developing country. e. a highly developed country
Biology & Microbiology
Half of the body's magnesium is stored in the:
A) bones. B) kidneys. C) skeletal muscle. D) extracellular fluid.
Biology & Microbiology