Which of the following is most often used as a starter culture for the production of cheese?
A. Rennet
B. Saccharomyces species
C. Aspergillus species
D. Lactobacillus species
Answer: D
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Following digestion of a microorganism by phagocytes, the debris is excreted by
A. ingestion. B. exocytosis. C. extrusion. D. budding
The female gamete just before it is fertilized is termed
A) a secondary oocyte. B) an oogonium. C) a zygote. D) a reprocyte.
Accumulations of cells that divide uncontrollably are called ______
a. oncogenes b. proto-oncogenes c. neoplasms d. checkpoints e. descendant tumors
Probes for cloned genes use ____
a. complementary nucleotide sequences tagged with a detectable label b. specific antibodies that kill all the cells
c. specific enzymes that lyse all the cells d. certain bacteria that glow when they take up the genes e. DNA ligase