Unit 6: Gene Expression & Regulation
Biology · Unit 6 · Paper 2

Gene Expression & Regulation unit test

A test on this unit alone, marked as a percentage and a letter grade — for the test your class is actually sitting, rather than for May. Answer everything, then submit once: seeing the answer to question 3 before attempting question 4 makes the final percentage meaningless.

Paper 1Paper 2Paper 3
Each paper is built from this unit’s 40 terms and is the same for everyone, so a teacher can assign “Unit 6, Paper 2” and every student sits the identical test. Multiple choice is marked objectively; the written sections you mark yourself against the model answer and rubric.
Suggested time 31 min 28 points0/17 attempted
1

Ribosome A, P and E sites

2

Introns and exons

3

Universality of the genetic code

4

Gel electrophoresis

5

Leading vs lagging strand

6

Mismatch repair and proofreading

7

Enhancers and silencers

8

PCR

9

Transcription factors

10

Start and stop codons

11

CRISPR

12

Frameshift mutation

Short answer 1. Define or explain: Lab: BLAST and DNA sequence comparison

3 pts

Short answer 2. Define or explain: Translation

3 pts

Short answer 3. Define or explain: lac operon

3 pts

Short answer 4. Define or explain: Homeotic genes

3 pts

Free response

4 pts

The human gene for the muscle protein troponin T produces at least ten different proteins in different tissues, all transcribed from the same DNA sequence.

(a) Identify the process that allows one gene to produce multiple different proteins.

(b) Describe how the process identified in (a) works at the molecular level.

(c) Explain one advantage this process provides to a eukaryotic organism.

(d) Explain why this process does not occur in bacteria.