AP Biology Unit 6 Quiz: Gene Expression

What are the key players involved in translation?

• Nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus

• DNA, lipids, carbohydrates, proteins

• mRNA, ribosomes, tRNA, amino acids

• Enzymes, hormones, vitamins, minerals

Discuss the role of tRNA in gene expression.

• tRNA is responsible for DNA replication.

• tRNA is involved in the packaging of DNA into chromosomes.

• tRNA helps in the transcription of mRNA.

• tRNA carries specific amino acids to the ribosome for protein synthesis.

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NGSS.HS-LS1-1

NGSS.HS-LS1-6

Explain the concept of codons and anticodons in gene expression.

• Codons code for DNA, while anticodons complement codons during translation.

• Codons code for proteins, while anticodons complement codons during replication.

• Codons code for lipids, while anticodons complement codons during transcription.

• Codons code for amino acids, while anticodons complement codons during translation.

What is the significance of gene expression in protein synthesis?

• It only affects RNA synthesis

• It is only important for DNA replication

• It has no impact on protein synthesis

• It is essential for the synthesis of proteins.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Discuss the regulation of gene expression in prokaryotes and eukaryotes.

• Regulation involves operons and transcription factors in prokaryotes, and chromatin remodeling, transcription factors, and post-transcriptional modifications in eukaryotes.

• Regulation is controlled by the same mechanisms in prokaryotes and eukaryotes.

• Regulation is not necessary in prokaryotes and eukaryotes.

• Regulation involves only DNA replication in prokaryotes and eukaryotes.

What role do operons play in prokaryotes?

• Produce ATP
• Control cell division
• Regulate gene expression
• Synthesize lipids

Explain the concept of post-transcriptional modifications in eukaryotes.

• It involves the addition of a 5' cap and a poly-A tail to the mRNA.

• It involves the replication of DNA.

• It involves the breakdown of mRNA into tRNA.

• It involves the synthesis of proteins from mRNA.

What is the function of the promoter region in gene expression?

• The promoter region is responsible for the breakdown of DNA.

• The promoter region is where RNA polymerase binds to initiate transcription.

• The promoter region is responsible for the translation of mRNA into proteins.

• The promoter region is where tRNA binds to the mRNA during translation.

• How do the base pairing rules of DNA and RNA ensure the accuracy of genetic information?

• Complementary base pairing during replication and transcription
• Mismatched base pairing during replication and transcription
• No base pairing during replication and transcription
• Random base pairing during replication and transcription

What are constitutive genes?

• Genes that are constantly expressed in all cells
• Genes that are only expressed in some cells
• Genes that are only expressed in response to specific stimuli
• Genes that are not expressed at all