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Ɛhia

1

How does transcription and translation result in the expression of genes?

Translation reads the DNA to make RNA. Transcription uses the RNA to make proteins which expresses the gene.

Transcription makes DNA. Translation uses the DNA to make proteins which expresses the gene.

Translation makes DNA. Transcription uses the DNA to make proteins which expresses the gene.

Transcription reads the DNA to make the RNA. Translation uses the RNA to make proteins which expresses the gene.

Ɛhia

1

E. coli has three gene that each code for different enzymes that break down lactose. Scientists conducted investigations about the production of these enzymes using samples of E. coli. Their results are shown in the table.
Which conclusion about the production of enzymes can be determined by analyzing the scientists results

The genes for the enzymes were expressed in equal amounts during both experiments

Gene expression for the enzymes was controlled by the temperature of lactose.

The genes for the enzymes were mutated before being expressed by the presence of lactose

Gene expression for the enzymes was controlled by the presence of lactose

B.C.6D

Ɛhia

1

Snowshoe hares can be found living in the Rocky Mountains of New Mexico. During the summer months, when there is no snow on the ground, the snowshoe hare’s coat color is typically brown.
During the winter months, when the mountains are covered in snow, the snowshoe hare’s coat is typically white. Which statement describes the genetic basis for the seasonal changes in coat color?

The snow causes mutations in the genes that regulate coat color so that snowshoe hares are adapted to their environment during the winter months.

The genes that control coat color in snowshoe hares are deleted from the genome during the summer months.

Sunlight causes cancer cells to develop in the bodies of snowshoe hares, resulting in an apparent brown-colored coat as a result of hair loss.

The genes that control coat color are regulated by hormone signals that are altered by changes in environmental factors.

B.C.6D

Ɛhia

1

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.
How can scientists use this technique to control gene expression?

By calculating the number of genes different organisms produce

By activating or deactivating specific genes

By identifying how closely related one individual is to another

By determining the number of chromosomes in an organism

B.C.6D

Ɛhia

1

The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year.
What causes this change in fur color?

Gene expression for fur color is regulated by temperature.

The alleles for fur color change as the arctic fox grows older.

Gene expression for fur color is regulated by latitude.

The arctic fox has two traits for fur color that are determined at birth.

B.C.6D

Ɛhia

1

Environmental factors, such as temperature, diet, or light, can cause cells to activate different genes at different times. For example, flamingos have pink feathers whenever they eat shrimp because they produce proteins called carotenoids. However, they turn pale white if they do not eat enough shrimp.
Which of these best explains the effect of environmental factors on gene expression?

Environmental factors cause cells to replicate at different rates.

Environmental factors cause cells to use specific sections of DNA to express specific proteins.

Environmental factors cause cells mutate as a survival response.

Environmental factors do not impact the expression of genes for an organism.

Ɛhia

1

Lactose intolerance is a condition common in adults that makes it more difficult to digest lactose, the sugar found in dairy products. The data table below shows the amount of lactose digested at various age groups.
Based on the information in the table, why is lactose intolerance more common in adults than infants?

Adults consume more dairy products, so they make more of the lactase enzyme.

Lactose digested is the same in infants and adults, so they make the same amount of lactase enzyme.

Adults have less intake of lactose, so they stop making a lot of the lactase enzyme.

People can no longer make lactase once they become teens and young adults.

Ɛhia

1

pGLO is a gene found in jellyfish that codes for green fluorescent protein (GFP). When GFP is produced, jellyfish will glow under UV light.
Scientists observed a colony of E. coli (bacteria) under UV light and noticed they do not glow. However, once the pGLO gene was introduced to the bacteria, they started to glow.
Which of these best explains why E. coli did not glow before, but started to glow once the pGLO gene was inserted into their DNA?

The bacteria expressed the pGLO gene and produced a protein that allowed the bacteria to glow under UV light.

The pGLO gene made the bacteria resistant to UV light, causing them to glow as a defense mechanism.

The pGLO gene corrected a mutation in the bacteria's DNA, allowing them to glow under UV light.

The pGLO gene made the bacteria unable to grow in the presence of UV light, so they glowed as a result of stress.

Ɛhia

2

Major Histocompatibility Complex (MHC) genes are expressed in immune cells when the cells are exposed to specific pathogens, allowing the body to recognize infected cells. Approximately 24 hours after exposure to the pathogen, MHC gene expression is at its peak.
The table below shows the levels of MHC genes expressed each hour after exposure.
Student 1: Expression of MHC genes increases after exposure to the pathogen.
Student 2: Expression of MHC genes is consistent.
One student has made a correct claim. Identify which student has made the correct claim AND explain why their claim is best supported by the evidence from the table.

Ɛhia

0

Copy of Copy of Wednesday (11/13) - Gene Expression Quiz 2024 (10/9/2025) (5/2/2026)

Copy of Copy of Wednesday (11/13) - Gene Expression Quiz 2024 (10/9/2025) (5/2/2026)

How does transcription and translation result in the expression of genes?

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.
How can scientists use this technique to control gene expression?

The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year.
What causes this change in fur color?

Was there anything else you should've added to your index card?
Any questions you were unsure about and wished you had added notes on?

How does transcription and translation result in the expression of genes?

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.
How can scientists use this technique to control gene expression?

The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year.
What causes this change in fur color?

Was there anything else you should've added to your index card?
Any questions you were unsure about and wished you had added notes on?

Copy of Copy of Wednesday (11/13) - Gene Expression Quiz 2024 (10/9/2025) (5/2/2026)

Copy of Copy of Wednesday (11/13) - Gene Expression Quiz 2024 (10/9/2025) (5/2/2026)

How does transcription and translation result in the expression of genes?

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.How can scientists use this technique to control gene expression?

The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year.What causes this change in fur color?

Was there anything else you should've added to your index card? Any questions you were unsure about and wished you had added notes on?

How does transcription and translation result in the expression of genes?

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.How can scientists use this technique to control gene expression?

The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year.What causes this change in fur color?

Was there anything else you should've added to your index card? Any questions you were unsure about and wished you had added notes on?

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.
How can scientists use this technique to control gene expression?

The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year.
What causes this change in fur color?

Was there anything else you should've added to your index card?
Any questions you were unsure about and wished you had added notes on?

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.
How can scientists use this technique to control gene expression?

The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year.
What causes this change in fur color?

Was there anything else you should've added to your index card?
Any questions you were unsure about and wished you had added notes on?