Which of the following do airborne microorganisms and microorganisms on light-exposed surfaces use to protect themselves from photooxidation?
A. Catalase enzymes
B. Superoxide dismutase
C. Carotenoid pigments
D. Peroxidase enzymes
Answer: C
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What best explains why some organisms
‘breed true” for certain traits?
a. they have identical alleles for these traits b. their parents had the same phenotype c. both alleles for the trait are on the same chromosome d. their genotypes match their phenotypes e. they are heterozygous for these traits
The mitochondrion
a. has its own DNA. b. DNA has few noncoding regions between genes.. c. resembles bacteria in size.. d. resembles bacteria in structure.. e. is all of these.
Which of the following are the closest ancestors of humans (genus Homo)?
A. prosimians B. gibbons C. australopithecines D. chimpanzees
Which of the following is not studied in the field of proteomics?
A. which genes give rise to which proteins B. protein concentration in a cell C. chemical modifications of proteins D. cellular location of particular proteins E. protein-protein interactions