Which portion of mRNA protects the strand and serves as a ribosome attachment site?
a. promoter
b. nucleotide cap
c. codon
d. transcript
e. polymerase
ANSWER: b
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Which of the following drugs is (are) effective against cold sores?
A. Protease inhibitors such as ritonavir B. AZT and ddC C. Valcyclovir and acyclovir D. Amantadine
During aerobic respiration in eukaryotic cells, glycolysis occurs in the ______ and the Krebs cycle occurs in the _____
1.cytoplasm, chloroplast 2.mitochondrion, chloroplast 3.cytoplasm, mitochondrion 4.mitochondrion, ribosome
Which of the following are pressure reservoirs with low resistance to flow?
a. arteries b. arterioles c. capillaries d. venules e. veins
All of the following are abiotic factors within an ecosystem except ________
A) energy B) fire C) nutrients D) All of the above are abiotic factors.