It is a three letter section of bases that are read by ribosomes to stamp amino acids into a protein

They are the codes on the DNA (hence "code-on"

It is a type of mutation that occurs when there has been a substitution, deletion or insertion.

It is a made up word for this quiz. Nice try, Wampler.

What is an anticodon?

a 3 letter section of bases on tRNA

a 3 letter section of bases on mRNA

If an mRNA molecule has introns and exons in it, where is it?

could be in the nucleus or the ribosome

Genes regulate protein synthesis by

specifying which amino acids will be joined together, and in what order.

coding for the arrangement of ribosomes on DNA molecules

regulating the influx of ions like sodium and potassium, which code for proteins.

setting the cell’s biological clock and controlling how and when a cell divides.

Translation is crucial to the process of making proteins. Which statement best describes what takes place during translation?

Information in mRNA is converted into a sequence of amino acids in a protein

A copy of chromosomal DNA is created

A RNA copy of a DNA strand is made.

Instructions from DNA in the nucleus are brought to the cytoplasm

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?

The proteins expressed in each cell are different

The two different cells become mutated

They actually have different DNA in the two types of cells.

The genome of the different cells changes

Why do identical twins begin to look different as they age?

The addition of epigenetic tags result in changes in gene function.

Their environment causes mutations that interfere with gene function.

Mutations accumulate which deactivates histone proteins.

Epigenetics is most concerned with

the expression of a particular gene as influenced by external inputs.

changes in a person’s genotype resulting from environmental influences.

environmental influences on gene expression over experiential influences.

the heritability of genotypes that have been altered over multiple generations.

the complex of DNA wrapped around a nucleosome

How do gene mutations contribute to evolution?

Natural selection favors beneficial mutations, so they survive and are passed on to future generations.

Beneficial mutations are passed on to several members of a generation, quickly taking hold in a population.

Unfavorable mutations have a more significant effect on genes than do favorable mutations, so they are spread through the population.

Beneficial and unfavorable mutations take hold in the population equally over numerous generations.

Unit 5 Exam Review A (Gene Expression & Mutations)

Quiz

•

Biology

•

9th Grade

•

Practice Problem

•

Medium

•

NGSS

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

+3

Standards-aligned

Carol Quach

Used 122+ times

FREE Resource

About this resource

This comprehensive quiz covers gene expression and mutations, core topics in high school biology appropriate for 9th grade students. The questions systematically progress through the central dogma of molecular biology (DNA → RNA → protein), examining base pairing rules, transcription, translation, and the roles of different RNA types. Students must understand nucleotide complementarity, codon-anticodon relationships, and the genetic code to successfully navigate problems involving DNA-to-RNA transcription and mRNA translation into amino acid sequences. The quiz also addresses advanced concepts including epigenetic regulation, cellular differentiation, and various types of mutations (point substitutions, frameshift mutations, and their phenotypic effects). Students need strong foundational knowledge of molecular structures, the ability to apply base-pairing rules across DNA and RNA, mathematical skills to calculate codon requirements, and conceptual understanding of how environmental factors influence gene expression without altering the underlying DNA sequence. Created by Carol Quach, a Biology teacher in the US who teaches grade 9. This quiz serves as an excellent comprehensive review tool for students preparing for a unit exam on gene expression and mutations. Teachers can deploy this assessment for multiple instructional purposes: as a pre-exam review session to identify knowledge gaps, a formative assessment during instruction to gauge student understanding, or homework practice to reinforce complex molecular biology concepts. The quiz effectively supports differentiated instruction by covering both fundamental concepts like base pairing and advanced topics such as epigenetic regulation and evolutionary implications of mutations. This assessment aligns with NGSS standards HS-LS1-1 (constructing explanations for how DNA codes for proteins) and HS-LS3-1 (explaining how gene expression determines organism traits), while also supporting Common Core mathematical practices through codon calculation problems that require students to apply the 3:1 nucleotide-to-amino acid ratio in various contexts.

34 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following best explains the sequence of gene expression?

DNA makes RNA makes protein

RNA makes DNA makes protein

DNA makes protein makes RNA

Protein makes DNA makes RNA

In DNA, Adenine pairs with ___________.

Guanine

Cytosine

Thymine

Uracil

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In RNA, Uracil pairs with ______.

Cytosine

Adenine

Guanine

Thymine

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In eukaryotic cells, DNA and RNA are different because:

DNA uses Uracil while RNA uses Thymine

Dna is double stranded while RNA is triple stranded

DNA is only found in the nucleus while RNA can travel anywhere in the cell

DNA is made of four bases while RNA is made of five bases

The process of making RNA (i.e. mRNA) from DNA is called

Replication

Transcription

Translation

Protein synthesis

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the role of mRNA?

bring the DNA message to the ribosome

bring the tRNA message to the nucleus

bring the DNA message to the mitochondria

take the amino acids to the ribosome

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the role of tRNA?

carry a message that, when translated, forms proteins

form a portion of ribosomes

string together complementary RNA and DNA strands

bring amino acids from the cytoplasm to the ribosomes

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Unit 5 Exam Review A (Gene Expression & Mutations)

34 questions

Which of the following best explains the sequence of gene expression?

In DNA, Adenine pairs with ___________.

In RNA, Uracil pairs with ______.

In eukaryotic cells, DNA and RNA are different because:

The process of making RNA (i.e. mRNA) from DNA is called

What is the role of mRNA?

What is the role of tRNA?

How would this DNA sequence ACAGTG code on mRNA?

How many bases are in one codon?

In mRNA, each codon specifies a particular

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