BIOL 221 L14

BIOL 221 L14

University

35 Qs

quiz-placeholder

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BIOL 221 L14

BIOL 221 L14

Assessment

Quiz

Science

University

Medium

NGSS
HS-LS3-2, HS-PS1-4, HS-LS1-1

Standards-aligned

Created by

Riya Verma

Used 14+ times

FREE Resource

35 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why must the lagging strand at a replication fork be replicated in short fragments?

DNA is always replicated in short fragments.

The slower replication requires DNA polymerase to start at several different places.

It is being replicated 3’ to 5’, which is backwards and slower than 5’ to 3’.

It is replicated toward the origin, but the fork is opening away from the origin.

There are several DNA polymerase molecules on the lagging strand.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which enzyme relieves the tension in DNA caused by unwinding the helix to replicate it?

DNA polymerase

DNA gyrase

DNA ligase

DNA transcriptase

Okazaki enzyme

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is needed to replicate DNA, but is NOT needed to make RNA from DNA?

nucleoside triphosphates

a primer

a template

an enzyme

a free 5’ OH

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does a prokaryotic RNA polymerase recognize a promoter?

It binds to a Shine-Dalgarno sequence

It binds to the 5’ end of the DNA

It recognizes a “start” codon

It binds to a sequence called an “origin of replication”

Its sigma subunit binds to consensus sequences at -10 and -35

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The following segment of double stranded DNA is transcribed using the sigma factor σ70, which recognizes as a consensus “TTGACA” at +35 and “TATAAT” at -10. Which strand is the template, and in which direction is it read?

Top strand, read to the right.

Bottom strand, read to the right.

Top strand, read to the left.

Bottom strand, read to the left.

Either strand could be the template, read to the right.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

DNA polymerase CANNOT do which of the following?

Synthesize Okazaki fragments.

Move on the leading strand in the same direction as helicase.

Move 3’ to 5’ on the template strand for more than one base.

Synthesize the lagging strand continuously.

Hydrolyze a phosphodiester bond.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a part of the updated (modern) “Central Dogma” of Biology?

DNA makes RNA

DNA makes DNA

RNA makes DNA

RNA makes protein

Protein makes RNA

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