At the start of mitosis, how many centromeres are present in a human cell?
A. 12
B. 23
C. 46
D. 92
C
Biology & Microbiology
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Recognition sites of restriction enzymes are ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
What is the partial pressure of oxygen in air at sea level?
A) 160 mm Hg B) 210 mm Hg C) 400 mm Hg D) 60 mm Hg E) 600 mm Hg
Biology & Microbiology
The opening in the eye through which light passes is known as the ____
a. sclera b. pupil c. iris d. lens e. cornea
Biology & Microbiology
A student is studying and someone turns on a stereo in the background; this breaks the student's concentration. However, as the stereo continues to play, the student begins to study successfully without broken concentration. The student is demonstrating
A) habituation. B) imprinting. C) associative learning. D) conditioning.
Biology & Microbiology