The process of fertilization joins male and female gametes ____
a. randomly
b. that contain a greater number of paternal chromosomes
c. that contain a greater number of maternal chromosomes
d. with the fewest mutations
e. with the best adaptive traits
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In terms of number of species, the most successful terrestrial vertebrates that invaded the air are
A. insects. B. pterosaurs. C. birds. D. bats. E. flying monkeys.
E. coli contains about _______ different tRNAs that code for _______ different amino acids.
a. 62; 40 b. 62; 20 c. 50; 20 d. 40; 20
Which of the following DOES NOT MATCH?
A. Endospore===dormant form of life that resist elements B. Pili===helps bacteria attach to host surface C. they all match D. Plasmid===helps transfer genetic material between bacteria E. Capsule===helps bacteria resist phagocytosis
Which of the following statements about viruses is false?
a. Viruses do not contain a nucleic acid. b. Viruses take over a cell’s machinery to reproduce. c. Viruses can be used to destroy cancer cells. d. Viruses can cause cancer.