What is the value of Delta A?
a. 0.01
b. 0.02
c. 0.03
d. 0.04
Ans: c. 0.03
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One unique feature of fertilization in flowering plants compared with animals is that _____
A) only plant sperm are motile B) fertilization in flowering plants involves double fertilization C) fertilization in flowering plants does not involve nuclear fusion D) in flowering plants the gametes are diploid, not haploid as they are in animals
Which of the following types of microscopy can be used with live cells?
A) phase-contrast microscopy B) transmission electron microscopy C) bright-field microscopy D) scanning electron microscopy
Which of the following have body fluids with the same overall salt concentration as that of their environment?
a. oysters and sea stars b. whales and sea lions c. freshwater fish d. freshwater amphibians e. cats and dogs
AIDS, warts, and measles are caused by
A. bacteria. B. viruses. C. protozoa. D. fungi.