Prætest SAU 10

Question 1

—- is a short RNA synthesized on the lagging strand during DNA replication and subsequently removed

Answer 1

RNA primer

Question 2

—- is an enzyme that joins two adjacent DNA strands together

Answer 2

DNA ligase

Question 3

—- is a DNA repair process that replaces incorrect nucleotides inserted during DNA replication

Answer 3

Mismatch repair

Question 4

—- is an enzyme that opens the DNA helix by separating the single strands

Answer 4

DNA helicase

Question 5

—- is one of the newly made strands of DNA found at a replication fork. It is made by continuous synthesis in the 5’- to -3’ direction

Answer 5

Leading strand

Question 6

—- is a protein complex that encircles the DNA double helix and binds to DNA polymerase, keeping it firmly bound to the DNA while it is moving

Answer 6

Sliding clamp

Question 7

—- is an enzyme that binds to DNA and reversibly breaks a phosphodiester bond in one or both strands, allowing the DNA to rotate at that point

Answer 7

DNa topoisomerase

Question 8

—-is a Y-shaped region of a replicating DNA molecule at which the two daughter strands are formed

Answer 8

Replication fork

Question 9

—- is one of the two newly made strands of DNA found at a replication fork. It is made in a discontinuous segments that are later joined covalently.

Answer 9

Lagging strand