Biology Exam 4

Front 1

If the DNA has a mistake, say a base substitution, what could happen?

Back 1

Nothing
Protein will still work
Protein will not work

Front 2

Can my children inherit my naturally red hair?

Back 2

Yes

Front 3

Can my children inherit my skin cancer?

Back 3

No

Front 4

What enzyme unzips the DNA in preparation for replication?

Back 4

Helicase

Front 5

Which is not part of a nucleotide?

Back 5

Nucleus

Front 6

If the sequence of a section of DNA is 5' CGCAACTAC 3', what is the appropriate sequence for the opposite strand?

Back 6

3' GCGTTGATG 5'

Front 7

What is correct when considering the process of DNA replication?

Back 7

New DNA molecules are composed of one strand from the old molecule and one new strand.

Front 8

The product of transcription of a structural gene is:

Back 8

mRNA

Front 9

During eukaryotic RNA processing, the nontranslated sequences that are removed are called:

Back 9

Introns

Front 10

The _______ is the organelle where translation takes place:

Back 10

Ribosome

Front 11

Which of the following is not considered a level of gene regulation in prokaryotes?

Back 11

RNA processing

Front 12

Transcription factors that bind to DNA and stimulate transcription are:

Back 12

Activators

Front 13

DNA methylation in many eukaryotic organisms seems to relate to:

Back 13

Switching a gene off

Front 14

Some point mutations will lead to an mRNA that produces a much shorter polypeptide. This type of mutation is known as a _______ mutation.

Back 14

Nonsense

Front 15

The type of mutation that alters the entire amino acid sequence from the site of the mutation is known as a _______ mutation.

Back 15

Frameshift

Front 16

Cancer cells are said to be metastatic when they:

Back 16

Migrate to other parts of the body

Front 17

Which of the following about mutations is incorrect?

Back 17

By definition, all mutations exhibit negative consequences on the cell(s) that acquire them.

Front 18

What does DNA stand for?

Back 18

Deoxyribose Nucleic Acid

Front 19

_______ are discrete units that code for specific traits.

Back 19

Genes

Front 20

A phosphate, a sugar, and a nitrogen containing base is called a:

Back 20

Nucleotide

Front 21

A protein being folded more than one way is an example of:

Back 21

Post-translational

Front 22

Lowering the pH to promote transcription is an example of this type of Combinatorial Control

Back 22

Activator and-or repressor needs to be altered

Front 23

This method of Combinatorial Control is often used to permanently cut a gene off:

Back 23

Methylation

Front 24

Where in the cell does replication occur?

Back 24

Nucleus

Front 25

Why is RNA processing needed?

Back 25

There are organelles that will break down uncapped RNA found in the cytoplasm, break down tailless RNA found in the cytoplasm, introns need to be removed to form a properly functioning protein

Front 26

Where in the cell does translation take place?

Back 26

Cytoplasm

Front 27

Is there a positive control involved in the Lac-Operon system?

Back 27

Yes

Front 28

Which is not a form of control of gene expression in prokaryotes?

Back 28

RNA processing

Front 29

Which form of control of gene expression do eukayotes use the most?

Back 29

Transcriptional

Front 30

For a mutation to be passed on to the next generation, where would it have to occur?

Back 30

In germ cells

Front 31

Which of the phrases below does not describe DNA?
Single stranded
Complimentary base paired
Double stranded
Anti-parallel
Helix

Back 31

Single stranded

Front 32

Sickle Cell Anemia is an example of this type of mutation:

Back 32

Missense

Front 33

Which is not part of a gene?

Back 33

Transcribed region