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Course: Cambridge AS & A Level Biology 9700 ...
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Cambridge AS & A Level Biology 9700 — Revision Notes

1 · Cell Structure

0/26

2 · Biological Molecules

0/51

3 · Enzymes

0/29

4 · Cell Membranes and Transport

0/41

7 · Transport in Plants

0/28

8 · Transport in Mammals

0/39

10-11 · Infectious Disease and Immunity

0/43

12 · Energy and Respiration

0/37

13 · Photosynthesis

0/23

14-15 · Homeostasis and Control

0/57

16 · Inherited Change

0/33

17-18 · Selection, Evolution, Classification and Conservation

0/70

19 · Genetic Technology

0/44
Quiz

16.3.3 Gene Control- Transcription Factors – Exam questions

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1.

In eukaryotes, gibberellin increases transcription of the amylase gene by

binding to the promoter
destroying mRNA
causing the breakdown of DELLA protein repressors
blocking the ribosome
2.

Transcription factors are

enzymes that copy DNA
proteins that bind to DNA and control the rate of transcription
types of RNA
ribosomes
3.
Eukaryotic genes are usually controlled by many transcription factors acting together. True or false?
True
False
False, by operons only
True only in yeast
4.
Which pairing of organism type and gene control is correct?
Eukaryotes — operons only
Bacteria — slow permanent switches
Eukaryotes — no transcription factors
Bacteria — operons with repressors
5.
Base-pair sequence that signals the start site for gene transcription.
Base-pair sequence that signals the start site for gene transcription.
Enhancer
Repressor
Operator
Promoter
6.
All the following are players involved in the control of gene expression except
All the following are players involved in the control of gene expression except
episomes.
repressors.
operons.
methylation.
hormones.
7.
Every body cell retains the complete genome, even though it uses only part of it. True or false?
True
False
False, genes are deleted
True only in stem cells
8.
Transcription-affecting DNA region that may be located thousands of base pairs away from the promoter.
Transcription-affecting DNA region that may be located thousands of base pairs away from the promoter.
Enhancer
Repressor
Operator
Promoter
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