Free Printable Molecular Genetics Test Review

Worksheets

Molecular Genetics Test Review

Total questions: 18

Worksheet time: 9mins

Name

Class

Date

Which of these BEST describes the primary goal of meiosis?

The nucleus is divided without mutation.

A single cell divides into two daughter cells.

All chromosomes are replicated and passed on to the daughter cells.

Four cells are produced with only half the chromosomes of the parent cell.

The central dogma of molecular biology is centered upon the fact that DNA determines an organism’s traits. Which of the following represents the central dogma?

proteins→ RNA → DNA

DNA→ proteins→ RNA

enzymes→ traits→ organisms

DNA→ RNA→ proteins

In nucleotides, the letters A, G, C, T represent:

phosphate groups

deoxyribose sugars

nitrogenous bases

ribose sugars

Which of these is a segment of DNA that contains the information necessary to produce a protein?

a phosphate

a gene

a mutation

an enzyme

A strand of DNA is CGG TCG AGT GAT.

What would be the correct mRNA transcription?

GCC AGC TCA CTA

GCC AGG TGA CTA

GCC UGC TCA CTU

GCC AGC UCA CUA

Which enzyme “unzips” the bonds holding DNA nucleotides together?

ligase

primase

helicase

nitrogenous base

Which statement correctly distinguishes between DNA and RNA?

DNA contains uracil and RNA does not.

DNA contains nitrogenous bases and RNA does not.

RNA contains the sugar ribose and DNA does not.

RNA is arranged in a double helix and DNA is not.

Which process MUST occur before mitosis and meiosis can occur?

DNA transcription

DNA translation

DNA replication

DNA conjugation

A normal human body cell, or somatic cell, contains how many chromosomes?

36 total, 18 pairs

46 total, 23 pairs

23 total, 12.5 pairs

72 total, 36 pairs

10.

A DNA strand is used to make a complementary mRNA strand. This process is called ____.

messaging

replication

transcription

translation

11.

What process is taking place in this image?

DNA replication

transcription

translation

meiosis

12.

Messenger RNA carries a(n) _____ of the DNA’s instructions out of the nucleus to the _____.

exact copy; ribosome

transcript; ribosome

exact copy; mitochondria

transcript; mitochondria

13.

Sample A is DNA from a crime scene. Does the DNA match any of the three suspects (B, C, D)?

No. The DNA (A) is not a match for any of the three suspects.

Yes. The DNA (A) matches suspect B.

Yes. The DNA (A) matches suspect C.

Yes. The DNA (A) matches suspect D.

14.

Changes in the DNA sequence that affect the expression of genetic information are called:

infiltrations

mutations

replications

transformations

15.

A segment of a DNA strand is shown. Which of the strands below is the correct complementary DNA strand for the segment shown? 3’ AGGTCAGGT 5’

5’ AGGTCAGGT 3’

5’ ACCUGAGGU 3’

5’ TGGACTGGA 3’

5’ TCCAGTCCA 3’

16.

In normal humans, sex cells (egg & sperm) contain the ______ number of chromosomes.

diploid

haploid

multiploid

tetraploid

17.

A normal strand of DNA is shown below, followed by the same strand of DNA after a mutation has occurred. Identify the type of mutation.

This mutation is a deletion mutation.

This mutation is an insertion mutation.

This mutation is a substitution mutation.

This is not a mutation.

18.

A gene from an Artic Flounder (fish) is inserted into tomato plant DNA

The tomato plant is now resistant to cold temperatures using _______.

DNA fingerprinting

tissue culture

recombinant DNA

in vitro fertilization

100 %

Molecular Genetics Test Review

Total questions: 18

Worksheet time: 9mins

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