Gametophytes reproduce ________
A) by producing sperm and eggs
B) by fission
C) by meiosis of special cells in the gametophyte
D) by budding
A
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In producing a strand of DNA the nucleotides combine to form what type of bond?
A. hydrogen B. peptide C. phosphodiester D. purine E. ionic
What is the correct order for the following events in excision repair of DNA? (1) DNA polymerase I adds correct nucleotides by 5?-to-3? replication; (2) damaged nucleotides are recognized; (3) DNA ligase seals the new strand to existing DNA; (4) part of a single strand is excised.
a. 1, 2, 3, 4 b. 2, 1, 3, 4 c. 2, 4, 1, 3 d. 3, 4, 2, 1 e. 4, 2, 3, 1
The human disease filariasis is caused by worms from which phylum?
a. Mollusca b. Cnidaria c. Nematoda d. Platyhelminthes e. Annelida
Enterococcus faecalis has been associated with ________.
A. endocarditis B. sinus infection C. abscesses D. diarrhea