RNA Notes

Multiple Choice

What is the main difference between DNA and RNA based on their nitrogen bases?

• DNA contains thymine while RNA contains uracil.

• DNA contains uracil while RNA contains thymine.

• Both DNA and RNA contain thymine.

• Both DNA and RNA contain uracil.

Multiple Choice

Which of the following are types of RNA and their correct functions?

• mRNA carries genetic info, tRNA matches amino acids, rRNA makes up ribosomes

• mRNA makes up ribosomes, tRNA carries genetic info, rRNA matches amino acids

• mRNA matches amino acids, tRNA makes up ribosomes, rRNA carries genetic info

• mRNA carries amino acids, tRNA makes up ribosomes, rRNA carries genetic info

Multiple Choice

What is the role of a ribosome in RNA?

• Ribosomes transport nutrients within the cell.
• Ribosomes store genetic information.
• Ribosomes are responsible for DNA replication.
• Ribosomes synthesize proteins by translating mRNA.

Fill in the Blank

A set of three nitrogen bases on mRNA that forms the code for one amino acid is called a ___.

Multiple Select

Which of the following statements about amino acids are correct?

• They are the building blocks of proteins

• There are about 20 different kinds

• They all have the same shape

• They fit together like Legos to form proteins

Multiple Choice

What is a mutation?

• A change in the nucleotide sequence of a gene

• A process of protein synthesis

• A type of living cell

• A method of DNA replication

Multiple Select

Which of the following are types of mutations described in the image?

• Deletion mutation

• Insertion mutation

• Duplication mutation

• Substitution mutation

Multiple Choice

Which of the following statements about genetic mutations is correct?

• All mutations cause genetic disorders or diseases.

• Some mutations do not affect traits because they do not change proteins.

• Every mutation is harmful to the organism.

• Mutations only occur in animals, not plants.