Genetics Quiz

Imagine you are analyzing the components of a DNA molecule in a laboratory. Which of the following molecules would you expect to find in the nucleotides of the DNA?

• Phosphate group

• Protein

• Sugar

• lipid

• Nitrogenous base

Which molecules make up the "backbone" of DNA and RNA?

• Sugar

• Phosphate group

• Nucleotide base

What are the four nitrogenous bases found in DNA?

• Adenine

• Thymine

• Glucose

• Guanine

• Cytosine

After DNA replication in a cell, each new DNA molecule consists of ​ (a)   new strand(s) and ​ (b)   old strand(s).

• one

• two

• zero

In the process of protein synthesis, tRNA carries an anticodon on one side and a/an __________ on the other side to ensure the correct amino acid is added to the growing protein chain.

• amino acid

• nucleic acid

• protein

• mRNA codon

Imagine a factory where the blueprint for a product needs to be transported from the design department to the manufacturing floor. What is the role of mRNA in this analogy?

• Carry the raw materials to the assembly line

• Copy the blueprint from the design department and carry it to the manufacturing floor

• Make up the machines on the manufacturing floor

During a genetics lab session, a student is asked to determine the mRNA sequence that corresponds to a specific DNA strand given by the instructor. The DNA strand is:

TAC GTA

• GCT AGC

• ATG CAT

• AUG CAU

If a portion of a messenger RNA molecule contains the base sequence A-A-U, then the corresponding anti-codon on the tRNA base sequence is:

• A-A-U

• G-G-T

• T-T-A

• U-U-A

Transcribe the following DNA strand into mRNA. Then translate the mRNA into a protein. TAC GGT CAT ACT

Tags

NGSS.HS-LS1-1

DNA molecule segment is: TTACGCAAG.  The mutated DNA segment is TTCGCAAG. This is an example of ___________ mutation.

• Substitution

• Insertion

• Deletion

• Inversion

Tags

NGSS.HS-LS3-2