Which of the following is not a polymer of numerous monomer units?
A) a phospholipid
B) a polypeptide
C) an RNA molecule
D) cellulose
E) starch
Answer: A
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______ cells contain one set of chromosomes.
A. Germ-line B. Somatic C. Diploid D. Haploid
Which of the following statements is true regarding subduction?
A. It adds new crust to Earth's surface via volcanic activity. B. It is unrelated to Earth's plate tectonics. C. It permanently removes carbon from Earth's surface. D. It permanently adds carbon to Earth's atmosphere. E. The carbon it removes is eventually returned to the atmosphere by volcanism.
What is the initiator triplet in both prokaryotes and eukaryotes? Which amino acid does this triplet recruit?
A) AUG; methionine B) UAA; no amino acid called in C) UAA or UGA; arginine D) UAA; methionine E) AUG; arginine
Which of these best describes Type II survivorship?
A) There is high survivorship for the very young. B) Most individuals survive to older age intervals. C) Survivorship is constant over the lifespan. D) Survivorship is high for the few individuals that survive to a certain age.