A double stranded DNA strand contains 26 pyrimidines. How many purines will the copied strand contain?
A. 13
B. 26
C. 52
D. 0
Answer: B
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Which of the following is NOT TRUE of
cystic fibrosis? a. It produces sticky mucus. b. It leads to increased bacterial lung infections. c. The amino acid affected is phenylalanine. d. It causes insufficient water to leave the cells. e. All of these are true.
In cases where global temperature increase results in increased resource availability,
A) population sizes are shrinking. B) average body sizes are decreasing. C) average body sizes are increasing. D) average limb lengths are decreasing.
The classification/identification system in the text uses this sequence of characteristics to group viruses:
A) host organism, capsid type, envelope presence/absence B) nucleic acid type, envelope presence/absence, double- vs. single-stranded nucleic acid C) nucleic acid type and strandedness, envelope presence/absence, host organism D) viral size, shape of capsid, host organism
Which statement true about telomere characteristics?
A) they allow duplicated chromosomes to become separated into daughter cells during M phase B.) found in all living cells C.) they cap the ends of linear chromosomes and prevent them from being recognized by the cell as broken DNA in need of repair D.) they contain repeated nucleotide sequences that are required to replicate the ends of linear chromosomes E.) all are true about telomere characteristics F.) only B and D are true G.) only statements C and D are true