The theory illustrated by Figure 21-1 is used to explain the origin of:
a. anaerobes.
b. prokaryotes.
c. eukaryotes.
d. vascular plants.
e. protobionts
C
You might also like to view...
Which of the following is not true of the second step of translational elongation in bacteria?
A. The carboxyl group oxygen of the A-site amino acid is the nucleophile in peptide bond formation. B. A peptide bond is formed between the two amino acids bound by the tRNAs in the A and Psites. C. The growing polypeptide chain is transferred to the tRNA in the A site. D. The ?-amino group of the A-site amino acid attacks the carbonyl carbon of the P-site amino acid.
In eukaryotes, glycolysis occurs in the:a
mitochondrial inner membrane. b. lysosomes. c. Golgi complex. d. cytosol. e. mitochondrial matrix.
When light hits a pigment, how many electrons are excited by a single photon?
a. one b. two c. three d. four
In which plants is the gametophyte larger and longer-lived?
A. Sporophyte B. Lycophyte C. Bryophyte D. Anthocerotophyta E. Monilophyte