This enzyme cleaves both strands of DNA, swivels the ends of the broken strands to relieve the torsional stress, and then rejoins the strands.
A. gyrase
B. ligase
C. ribonuclease
D. catalase
E. helicase
Ans: A. gyrase
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In a mutualistic relationship with a fungus, the plant can receive
a. minerals. b. protection. c. water. d. all of these
Sexual reproduction involves ____
a. one diploid cell fertilizing a haploid cell b. the union of two somatic cells c. the union of male and female gametes d. a single mitotic division of the parent cell to produce a daughter cell e. the union of two gametes to produce a haploid zygote
Which of the following is a common protist-caused sexually transmitted disease?
a. trichomonisasis b. yeast infection c. chlamydia
The fungal group that is most closely related to ancestral fungi are the
A. Blastocladiomycota. B. Neocallimastigomycota. C. Zygomycota. D. Microsporidia. E. Chytridomycota.