In sickle cell disease, malformation of red blood cells is caused by only one mistake for one amino acid in the genetic code for hemoglobin.
a. true
b. false
Ans: a. true
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During which stage of cellular respiration is the majority of the ATP produced?
A. Electron transport chain B. Fermentation C. Citric acid cycle D. Glycolysis
A cell in which viral reproduction occurs is called a:
A. host cell. B. daughter cell. C. sex cell. D. somatic cell. E. None of the answer options is correct.
51. The three major components in a nucleotide are
A. a carboxyl group, an R group, and an amino group. B. glucose, a nitrogen base, and a phosphate group. C. a nitrogen base, a six-carbon sugar, and a phosphate group. D. a nitrogen base, a five-carbon sugar, and a phosphate group. E. glucose, a fatty acid, and glycerol.
Which hemoglobin genotype has the highest fitness in an area of low malaria infection?
a. HbAA b. HbAS c. HbSS d. All are equal