Fever, fatigue, loss of appetite, and a yellow color of the sclera and skin, without hemorrhaging or kidney damage, are typically observed with
A) gastroenteritis.
B) dengue fever.
C) hepatitis.
D) rubella.
E) yellow fever.
C
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Paedomorphosis is
A. the formation of limbs from fins in the evolution of land vertebrates. B. the change from radial to bilateral symmetry in the evolution of plants and animals. C. the retention of juvenile traits in an adult organism. D. an earlier development of adult traits in an organism. E. the development of different types of eyes from a simpler form.
Why is Taq polymerase used in a polymerase chain reaction (PCR)?
A. Taq polymerase has proofreading activity and thus makes fewer errors than other DNA polymerases. B. Unlike other DNA polymerases, Taq polymerase is heat stable and survives the 94 degree denaturation step in PCR. C. Unlike other DNA polymerases, Taq polymerase is not inhibited by dideoxy nucleotides. D. Taq polymerase can produce DNA from an RNA template, unlike other DNA polymerases. E. Taq polymerase is more efficient than other DNA polymerases.
What is the role of NADH in glycolysis?
a. NADH phosphorylates pyruvate. b. NADH catalyzes the transformation of dihydroxyacetone-phosphate. c. NADH binds and carries electrons. d. NADH destabilizes fructose.
Distinguish between manipulative experiments and natural experiments
What will be an ideal response?