1. Cells contain DNA, which contains the universal genetic code/instructions for all processes in all organisms on Earth. There are multiple structures important to storing this genetic material. Which of the following correctly places these structures in order from smallest to largest?(1 point)

Question

Responses

gene, DNA, chromosome, nucleus, cell
gene, DNA, chromosome, nucleus, cell

gene, nucleus, chromosome, cell, DNA
gene, nucleus, chromosome, cell, DNA

DNA, gene, cell, chromosome, nucleus
DNA, gene, cell, chromosome, nucleus

cell, DNA, chromosome, nucleus, gene
cell, DNA, chromosome, nucleus, gene
Question 2
2. DNA is in the form of double helix, with very speicfic ways in which the nitrogenous bases pair. A (adenine) always pairs with T (thymine) and C (cytosine) always pairs with G (guanine). mRNA however, does not contain thymine. What base on the mRNA matches up with the adenine on the DNA strand? (The video does not say this but shows it!)(1 point)
Responses

C (cytosine)
C (cytosine)

A (adenine)
A (adenine)

U (uracil)
U (uracil)

G (guanine)
G (guanine)
Question 3
3. Transcription results in _______ and takes place in the ______________.(1 point)
Responses

a new DNA strand; nucleus
a new DNA strand; nucleus

an mRNA strand; nucleus
an mRNA strand; nucleus

an mRNA stand; cytoplasm
an mRNA stand; cytoplasm

a tRNA strand; ribosome
a tRNA strand; ribosome
Question 4
4. What is the role of the ribosome in translation?(1 point)
Responses

To match the base pairs from mRNA to the new DNA strand
To match the base pairs from mRNA to the new DNA strand

To carry the mRNA from the nucleus to the cytoplasm
To carry the mRNA from the nucleus to the cytoplasm

To read the code in the mRNA and produce a chain of amino acids
To read the code in the mRNA and produce a chain of amino acids

To unzip the DNA strand for transcription
To unzip the DNA strand for transcription
Question 5
5. What is the effect of a mutation in a DNA sequence prior to transcription?(1 point)
Responses

Only a positive effect on the organism
Only a positive effect on the organism

A mutation would not affect the organism in any way
A mutation would not affect the organism in any way

Only a negative effect on the organism
Only a negative effect on the organism

A mutation could have a helpful, harmful, or no effect

Answer 1

Here are the correct answers for each question:

Question 1: Cells contain DNA, which contains the universal genetic code/instructions for all processes in all organisms on Earth. There are multiple structures important to storing this genetic material. Which of the following correctly places these structures in order from smallest to largest?

• Answer: gene, DNA, chromosome, nucleus, cell

Question 2: DNA is in the form of double helix, with very specific ways in which the nitrogenous bases pair. A (adenine) always pairs with T (thymine) and C (cytosine) always pairs with G (guanine). mRNA however, does not contain thymine. What base on the mRNA matches up with the adenine on the DNA strand?

• Answer: U (uracil)

Question 3: Transcription results in _______ and takes place in the ______________.

• Answer: an mRNA strand; nucleus

Question 4: What is the role of the ribosome in translation?

• Answer: To read the code in the mRNA and produce a chain of amino acids

Question 5: What is the effect of a mutation in a DNA sequence prior to transcription?

• Answer: A mutation could have a helpful, harmful, or no effect

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