For how long were prokaryotes the only kind of life on Earth?
A) 100 million years
B) 500 million years
C) 1 billion years
D) 1.5 billion years
D
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Which of the following describes the second step in a DNA polymerase reaction?
A. The 3'-OH attacks the ? phosphorus of the incoming dNTP. B. Pol I translocates, positioning the newly added nucleotide in the postinsertion site. C. Incoming dNTP enters the insertion site. D. PPi is hydrolyzed by pyrophosphatase to prevent the back reaction. E. After translocation, the insertion site is now available for entry of the next dNTP.
One double-stranded DNA molecule combined with proteins form ____________________, which is visible as clumps or threads in the cell nucleus
Fill in the blank(s) with correct word
Four of the five answers listed below are anthropoids. Select the exception
a. tarsier b. Old World monkey c. human d. ape e. gorilla
Occassionally, Staphylococcus epidermidis may be isolated from the eye.
Answer the following statement true (T) or false (F)