Bacteria that grow in mine drainage at pH 1-2 are probably which of the following?
A. alkaliphiles
B. acidophiles
C. neutrophiles
D. obligate anaerobes
Ans: B. acidophiles
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What are the two main steps that must happen to a protein in order for it to be catabolized and broken
down by the citric acid cycle?
a. The protein must be phophorylated and broken into amino acids. b. The protein must be glycosylated and transported to the liver. c. The protein must be hydrolyzed and the amino group removed. d. The amino group must be removed followed by the carboxyl group. e. The protein is broken into monomers and converted to acetate.
A DNA similarity of 75% between two organisms
A. suggests the organisms are very closely related at the species level. B. suggests the organisms are not related. C. suggests the organisms may or may not be related. D. means the GC content is 45%.
What molecule(s) exhibits self-splicing?
A. rRNA B. tRNA C. mRNA D. rRNA and tRNA E. rRNA and mRNA
What tool do geneticists use to study the
genetics of families through generations?
a. Punnett squares b. pedigrees c. karyotypes d. DNA profiles e. fossil analyses