What is the result of the insertion or deletion of a single base in the coding sequence?
a. frameshift
b. an unidentified reading frame
c. a new open reading frame
d. a silent mutation
e. a neutral mutation
Ans: a
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Which of the following may be used by prokaryotes, under anaerobic conditions, as terminal electron acceptors?
A. nitrate B. nitrite C. sulfate D. carbon dioxide E. All of the choices are correct.
Skeletal muscles are connected to bones by cords of connective tissue called
a. muscle fibers. b. sarcomeres. c. tendons. d. ligaments. e. myofibrils.
The E horizon of soils is characterized by the maximum amount of
A) biological activity. B) decomposition. C) leaching of mineral particles. D) accumulation of leached mineral particles.
What enzyme is released by the stomach to digest protein?
What will be an ideal response?