Unit 5 5.12 Unit Test

What is the name of the process in which tRNA

is involved in making proteins?

• transcription

• translation

• replication

• duplication

Which pathway is correct?

• DNA to proteins to RNA

• RNA to DNA to proteins

• proteins to RNA to DNA

• DNA to RNA to proteins

Tags

NGSS.HS-LS1-1

Molecule 1 has the following sequences of bases: TCAAGT.

Which set of bases in Molecule 2 will bond to this sequence in a complementary way?

• UCAAGU

• AGTACA

• AGUUCA

• UCAATA

Which statement describes a step in DNA

replication?

• New bases are built by the original strands.

• The paired bases release many types of proteins.

• The DNA is cut into pieces using polymerase enzymes.

• The double helix unwinds, and each side is a template for a new strand.

According to the base-pairing rules for DNA, which statement is not true?

• A always pairs with T

• C always pairs with G

• T always pairs with G

The diagram shows the process of transcription, which takes place in the nucleus of a cell. What is occurring?

• DNA is being used as a template to make a molecule of mRNA.

• DNA is being used as a template to make a chromosome.

• RNA is being used as a template to make a molecule of tRNA.

What happens to mRNA

after it completes transcription?

• It remains in the nucleus.

• It becomes part of the nucleolus.

• It enters the cytoplasm and moves toward ribosomes.

• It leaves the cytoplasm through the cell membrane.

This diagram shows the process of translation. Which statement is correct?

• The amino acid chain is brought in at the beginning of the process.

• The molecule of tRNA is taking away amino acids one at a time.

• The molecule of tRNA bonds with mRNA before it bonds to an amino acid.

• The mRNA code determines which tRNA molecules are used.

Which structure is missing from the diagram, but helps mRNA and tRNA bind together?

• DNA

• mitochondria

• ribosome

• nucleus

Where does protein-building begin?

• cytoplasm

• nucleus

• mitochondria

• ribosome