Which molecule is responsible for separating double-stranded DNA into single strands?
A. DNA primase.
B. DNA helicase.
C. topoisomerase.
D. DNA ligase.
E. single-stranded binding proteins.
B. DNA helicase.
Biology & Microbiology
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The lowermost and outermost whorl on a floral shoot consists of petals
____________________ Indicate whether the statement is true or false.
Biology & Microbiology
Which of the following do carrier proteins often transport?
a. proteins b. steroid hormones c. H2O d. glucose and amino acids
Biology & Microbiology
The light reactions use sunlight as the energy source.
a. true b. false
Biology & Microbiology
Microorganisms assimilate large amounts of all of the following atoms into organic molecules, except ________ .
A. sulfur B. sodium C. phosphorus D. nitrogen
Biology & Microbiology