Gene Expression Review Lesson

Multiple Choice

The Himalayan rabbit's habitat has cold, snowy winters and mild summers. The body is typically covered in white fur except for the nose, feet, tail, and ears, which are covered in black fur.

A scientist shaved an area of white fur on the back of a Himalayan rabbit and placed an ice pack over the shaved area . The shaved area grew black fur.

Which of these best explains why the hair that grew back where the Ice pack was placed was black and not white?

• The white hair mutated to black hair as the rabbit's body temperature decreased.

• The coat color changed from white to black with the age of the rabbit.

• The genes for black hair were activated by specific temperatures.

• White hair only grows during certain times of the year.

Multiple Choice

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, protein

Multiple Choice

What are the main differences between DNA and RNA in terms of structure and/or function?

• DNA is single-stranded

• RNA contains thymine

• DNA is double-stranded

• DNA and RNA store genetic information

Multiple Choice

The following picture must be

• DNA because it's double stranded
• RNA because it's single stranded
• DNA because it's single stranded
• RNA because it's double stranded

Multiple Choice

What process is happening in the diagram?

• transcription

• translation

• dna replication

• mitosis

Multiple Choice

How would the DNA sequence GCTATA be transcribed to mRNA?

• GCUAUA
• CGATAT
• CGAUAU
• GCUTUT

Multiple Choice

Which RNA carries the message?

• mRNA

• rRNA

• tRNA

Multiple Choice

What part of a nucleotide accounts for the genetic variation between individuals?

• phosphate
• nitrogenous base
• deoxyribose
• sugar

Multiple Choice

The initial steps in gene expression are modeled. Double-stranded DNA first unwinds into two strands. Which process and product are represented in the diagrams?

• Process: transcription; product: mRNA

• Process: translation; product: protein

• Process: replication; product: tRNA

• Process: recombination; product: polymerase

Multiple Choice

What is the order for Protein Synthesis?

• Transcription -> Translation -> Protein

• Translation - > Transcription -> Protein

• Protein -> Transcription -> Translation

• Translation -> Protein -> Transcription

Multiple Choice

What best explains the interaction between tRNA and mRNA during translation?

• anticodons on the mRNA line up with complementary codons on the tRNA

• anticodons on the tRNA line up with complementary codons on the mRNA

• tRNA attach amino acids to the complementary mRNA sequence

• mRNA attach amino acids to the complementary tRNA sequence

Multiple Choice

The process to go from mRNA to a protein is called ____

• transcription
• rRNA
• replication
• translation

Multiple Choice

Translation is the process where

• mRNA is created in the Nucleus
• mRNA is decoded to form a protein 
• glucose molecules are made
• is where lipids are synthesised

Multiple Choice

If you are using the codon chart, what process are you doing?

• replication

• transcription

• translation

• mitosis

Multiple Choice

Determine the correct order of the amino acid sequence to be produced from the DNA template:

3' CCG TCT AAG GTG ACC CTT 5'

• Valine - Threonine - Lysine - Serine - Proline - Glutamic Acid

• Glycine - Valine - Lysine - Serine - Proline - Alanine

• Proline - Serine - Lysine - Threonine - Valine - Stop

• Glycine - Arginine - Phenylalanine - Histidine - Tryptophan - Glutamic Acid

Multiple Choice

What is the purpose of a codon chart in decoding mRNA?

• To show the structure of DNA

• To decode mRNA into amino acids

• To represent the genetic code

• To illustrate protein synthesis

Multiple Choice

Which of the following statements about the genetic code is true?

• A codon can specify more than one amino acid
• Every codon specifies a different amino acid
• Some codons specify the same amino acid
• Some codons have no function at all

Open Ended

Big picture, how do the three different RNA molecules work together?