Which of the following help(s) to hold the DNA strands apart while they are being replicated?
A) primase
B) ligase
C) DNA polymerase
D) single-strand DNA binding proteins
E) nuclease
Answer: D
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The energy in chemical bonds is a type of ___________________ energy
Fill in the blank(s) with correct word
Carbon has an atomic number of 6. This means it has 6 protons and 6 electrons. How many valence electrons does carbon have?
a. 2 b. 6 c. 4 d. 3
The metabolic rate of an endotherm _____ at low environmental temperatures while the metabolic rate
of an ectotherm _____ at low environmental temperatures
a. falls; rises b. falls; falls c. rises; falls d. rises; rises e. it depends on the particular endotherm or ectotherm, so all of these are possible
The genotype is fixed at the moment of ____________________ and, barring mutation, is unchangingFill in the blank(s) with the appropriate word(s)