Unit 4 Review

Which statement best describes the relationship that exists among proteins, DNA and cells

• DNA is made up of proteins, which tell a cell how to function.

• Proteins are made up of DNA, which determines the cells that are produced.

• Proteins combine to produce cells, which produce DNA

• Cells contain DNA, which controls the production of proteins.

Which part of the DNA molecule determines an organism's traits?

• hydrogen bonds

• phospholipid group

• sugar-phosphate backbone

• complementary base pairing

What is the relationship between an organism's DNA and protein produced?

• DNA becomes a specific part of the protein structure.

• DNA translates proteins into amino acids.

• DNA determines the amino acid sequence of each protein.

• DNA determines the ribosomal RNA sequence that becomes part of the protein structure.

Which describes the role of mRNA in protein synthesis?

• mRNA brings the amino acids to the ribosome where they are connected to construct a protein

• mRNA forms the peptide bonds connecting amino acids together to construct a protein

• mRNA decodes the sequence of tRNA into the amino acids used to construct a protein

• mRNA brings the code of DNA to the ribosome where it is used to construct a protein

What process is represent at Point 3?

• transcription

• replication

• translation

• mutation

What is the three base sequence attached to tRNA? (It pairs with mRNA using the base-pair rule.)

• codon

• anticodon

• protein

• DNA

Transcription of the sequence TTAAG produces which sequence?

• TTAAG

• UUAAG

• AAUUC

• AATTC