Ch. 13.1/13.2 RNA & Protein Synthesis

RNA contains what sugar?

• ribose

• deoxyribose

• glucose

• lactose

Unlike DNA, RNA contains

• adenine

• uracil

• phosphate groups

• thymine

Which statement is true:

• RNA is usually single-stranded.

• DNA is usually single-stranded.

• DNA contains uracil.

• RNA contains thymine.

Which type of RNA brings the information in the genetic code from the nucleus to other parts of the cell?

• rRNA

• tRNA

• mRNA

• RNA polymerase

True or False: Introns are sequences of DNA that are kept and taken to the ribosome.

• True

• False

From which molecules are mRNA molecules transcribed?

• tRNA

• rRNA

• DNA

• proteins

What is produced during transcription?

• RNA molecules

• DNA molecules

• RNA polymerase

• proteins

How many nucleotides are needed to specify three amino acids?

• 3

• 6

• 9

• 12

What happens during translation?

• Messenger RNA is made from a DNA molecule.

• The cell uses a messenger RNA code to make proteins.

• Transfer RNA is made from a messenger RNA code.

• Copies of DNA molecules are made.

A protein is being assembled when

• DNA is being translated.

• RNA is being transcribed.

• RNA is being translated.

• DNA is being transcribed.