LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In replication, DNA ____ reads the strand and attaches a complementary base pair to the DNA
A
helicase
B
phages
C
polymerase
D
bonds
Explanation: 

Detailed explanation-1: -Complementary bases attach to one another (A-T and C-G). The primary enzyme involved in this is DNA polymerase which joins nucleotides to synthesize the new complementary strand. DNA polymerase also proofreads each new DNA strand to make sure that there are no errors.

Detailed explanation-2: -During DNA replication, each of the two strands that make up the double helix serves as a template from which new strands are copied. The new strand will be complementary to the parental or “old” strand. Each new double strand consists of one parental strand and one new daughter strand.

Detailed explanation-3: -Once the RNA primer is in place, DNA polymerase “extends” it, adding nucleotides one by one to make a new DNA strand that’s complementary to the template strand.

Detailed explanation-4: -These enzymes are essential to DNA replication and usually work in pairs to create two identical DNA strands from one original DNA molecule. During this process, DNA polymerase “reads” the existing DNA strands to create two new strands that match the existing ones.

There is 1 question to complete.