Comparisons of protein similarity between species can reveal the degree of genetic kinship because
a. the number of protein variations is limited.
b. specific amino acids are dictated by known nucleotide sequences in DNA.
c. gel electrophoresis converts proteins to nucleotides.
d. protein can be hybridized with DNA.
e. DNA is made by directions stored in proteins.
B
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Scientists estimate that carbon dioxide in the atmosphere has increased by 35% in the last 150 years
Indicate whether the statement is true or false.
An anabolic reaction usually
A) yields energy. B) requires energy. C) involves no change in energy. D) is degradative, regardless of energy change. E) decreases molecular order.
A carbon atom is most likely to form what kind of bond(s) with other atoms?
A) ionic B) hydrogen C) covalent D) ionic bonds, covalent bonds, and hydrogen bonds
The classification of prokaryotes in Bergey's Manual of Systematic Bacteriology is largely based on
A) Gram stain reaction. B) habitat. C) type of electron receptor used in cellular respiration. D) rRNA sequences. E) cellular morphology.