Module 7 Biology

What is the main difference between DNA and RNA?

• DNA is single-stranded, and RNA is double-stranded.

• DNA contains ribose sugar, and RNA contains deoxyribose sugar.

• DNA contains thymine, while RNA contains uracil.

• RNA is involved in protein synthesis, while DNA is not.

Which of the following is a function of proteins?

• Storage of genetic information

• Carrying out cellular functions, including enzymatic reactions

• Transcribing DNA into RNA

• Replicating DNA

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What is the main function of RNA in a cell?

• To store genetic information

• To carry genetic information from DNA to the ribosome

• To replicate DNA

• To maintain the cell’s structural integrity

Where is DNA located in a eukaryotic cell?

• Nucleus

• Mitochondria

• Cytoplasm

• Ribosome

Where is mRNA found in a cell?

• Nucleus

• Mitochondria

• Cytoplasm

• Both nucleus and cytoplasm

Where is rRNA primarily located in a cell?

• Nucleus

• Ribosomes

• Cytoplasm

• Nucleolus

Which of the following is true about the relationship between DNA, genes, and proteins?

• A gene is a segment of DNA that codes for a specific protein.

• Proteins are directly encoded by RNA.

• Genes are made up of amino acids.

• DNA codes for ribosomal RNA only.

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How do nucleotides in DNA relate to amino acids in proteins?

• Three nucleotides (a codon) in DNA correspond to a specific amino acid.

• Each nucleotide codes for a different amino acid.

• Amino acids determine the structure of nucleotides.

• Nucleotides and amino acids are unrelated.

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Which of the following is NOT a part of a gene?

• Promoter

• Exon

• Intron

• Ribosome

What is the function of an exon in a gene?

• It is the non-coding region that is removed during mRNA processing.

• It is the coding region that remains in the mRNA and is translated into protein.

• It helps to promote gene expression.

• It acts as a template for RNA replication.