A diploid primary spermatocyte divides to produce two haploid secondary spermatocytes
Indicate whether the statement is true or false
TRUE
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Listeria monocytogenes propels itself through mammalian host cells using
A. a modified form of gliding motility. B. fimbriae-based twitching motility. C. periplasmic flagella. D. host cell actin and other cytoskeletal proteins.
Goal(s) of gene cloning may be to produce
A. a protein. B. many copies of the gene to be used as a probe. C. many copies of the gene for sequencing. D. more copies of the host cell. E. a protein, many copies of the gene to be used as a probe, AND many copies of the gene for sequencing.
Which of the following is a true statement about glycogen?
a. Glycogen is made and stored in the liver and muscle. b. Glycogen is a long-term energy storage molecule. c. Glycogen helps cell membranes stay flexible. d. Glycogen is a precursor of steroid hormones.
The kingdoms included in the Linnaeus system of classification are
A) Animalia and Prokaryotae. B) Protista and Plantae. C) Fungi and Protista. D) Animalia and Plantae. E) Prokaryotae and Protista.