How many HLA haplotypes does each human have?
A. 1 D. 4
B. 2 E. 5
C. 3
B
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Archaea are resistant to damage by harsh conditions because their membrane lipids, unlike those of Bacteria and Eukaryota, have:
A. ether linkages B. proton pumps C. sulfhydryl linkages D. transferases E. cytoskeletons
Knowledge of the cell cycle has led to improved means of treating cancer. The drug 5-fluorouracil blocks the synthesis of thymine. This drugs inhibits the cell cycle at the end of
a. G1. b. G2. c. S. d. prophase. e. metaphase.
The organelle that is the equivalent of a cellular garbage disposal system is the
A) nucleus. B) lysosome. C) mitochondrion. D) glucosome.
Random movement from a region with higher concentration to a region with lower concentration in the cell is called ________
Fill in the blank(s) with correct word