In all cases, freezing kills microbes.

a. true
b. false


Ans: b. false

Biology & Microbiology

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George Beadle and Edward Tatum created a collection of mutants to study the following pathway

A mutant shows no growth on minimal media; however it shows growth if citrulline is provided. These results indicate the mutation would most likely be in the gene for: A. Enzyme I. B. Enzyme II. C. Enzyme III D. either Enzyme I or Enzyme II. E. either Enzyme II or Enzyme III.

Biology & Microbiology

These genes encode proteins that generally regulate the cell cycle in normal cells

a. tumor suppressor genes b. proto-oncogenes c. oncogenes d. tumor suppressor genes and proto-oncogenes e. tumor suppressor genes, proto-oncogenes, and oncogenes

Biology & Microbiology

Low intensity, long duration exercise results in ____

a. decreased capillary growth b. decreased number of mitochondria c. increased white fibers d. increased amounts of myoglobin e. no change in muscles

Biology & Microbiology

Groups of three consecutive bases along the DNA of a gene have the code for one

A. nucleotide. B. protein. C. purine. D. amino acid.

Biology & Microbiology