Based on the chart below, what can be understood about base pairing?

• Since %C and %T are lower in each sample, both cytosine and tyrosine must be a single ring.

• Since %A and %G are simiar in each sample, they must pair up on a molecule of DNA.

• Since %A is the greatest in each sample, the DNA must contain a poly A tail

• Since %C and %G are about the same in each sample, Cytosine and Guanine must pair up on a strand of DNA.

What process is this image showing?

• Transcription

• Translation

• DNA replication

• Alternatice splicing

What process is this image showing?

• Synthesis of mRNA from 5' to 3'

• Turning premRNA into mature mRNA

• Synthesis of a protein

• Turning mRNA into a polypeptide

What is the name of the green strand?

• The antisense strand because it is being used as a template

• The sense strand because it is being used as a template

• the ribosomal strand because it is being used to string along amino acids

• the muture mRNA because it has a G cap and Poly A tail.

When do prokaryotes perform transcription and translation?

• Transcription happens first and is completely finished before translation begins due to the nucleus.

• Translation occurs once the prokaryote has processed the mRNA

• Translation begins first then transcription can happen.

• Transcription and translation happen simultaneously.

What does a ribosome do?

• Transcribe mRNA.

• Synthesize amino acids.

• Synthesize polypeptides

• Translate tRNA

What is a polypeptide?

• A chain of amino acids that will be folded into a protein.

• A fully functional protein

• A long message to be read by the ribosome

• A taxi that carries amino acids.

Tags

NGSS.HS-LS1-6

If a histone is methylated, what happens to the DNA wrapped around it?

• Histone methylation condenses chromatin so the DNA cannot be read.

• Histone methylaton opens up the chromatin so the DNA can be read.

• Histone methylatoin condenses chromatin so the DNA can be read.

• Histone mehtylation opens up the chromatin so the DNA cannot be read.

Occording to this image of the lactose operon, what is the function of the repressor?

• When glucose binds to the repressor, lactose cannot be metabolized.

• When glucose binds to the repressor, lactose can be metabolized.

• When the repressor is bound to the operator, lactose can be metabolized.

• When the repressor is bound to the operator, lactose cannot be metabolized.

Which of the following is true?

• Different genes can be regulated by the same transcription factor.

• Different genes are each regualted by individual, unique transcription factors.

• Transcription factors do not regulate genes.

• Gene X codes for the transcription factor needed for Gene D.

Tags

NGSS.HS-LS1-1