Which of the following helminths is paired with correct characteristics of its pathogenesis?
A) Ascaris lumbricoides - life and transmission cycle B
B) Necator americanus - life and transmission cycle A
C) Trichuris trichuria - life and transmission cycle B
D) Strongyloides stercoralis - life and transmission cycle B
E) Taenia solium - life and transmission cycle A
Ans: D) Strongyloides stercoralis - life and transmission cycle B
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The two strands of a DNA double helix are held to each other by ____ bonds between nitrogenous bases
a. phosphodiester b. disulfide c. glycosidic d. hydrogen e. peptide
In DNA, most satellite sequences are found in
A) chromosome arms. B) telomeres. C) centromeres. D) spaces around the dark bands.
The Michaelis constant
A) can be determined using the Lineweaver–Burk plot. B) is equal to twice the Vmax. C) is equal to the substrate concentration at Vmax/2. D) can be determined using the Lineweaver–Burk plot and is equal to the substrate concentration at Vmax/2. E) can be determined using the Lineweaver–Burk plot and is equal to twice the Vmax.
The total number of different three-base combinations of the four nucleic acid bases is:
a. 12. b. 16. c. 20. d. 64. e. 256.