Unit 4 Test: Gene Expression

Match the nucleic acid with its role in protein synthesis:

• tRNA

• Provides the original genetic code for the protein

• mRNA

• Carries the genetic code out of the nucleus to the ribosome

• DNA

• Transfers amino acids to the ribosome

• rRNA

• Ribosomes are made out of this

Match the term with its correct definition:

• nucleus

• The location where transcription occurs

• codon

• A set of three nucleotides on a mRNA strand

• ribosome

• The location where translation occurs

• RNA polymerase

• The enzyme that adds complementary bases to DNA creating mRNA

One difference between DNA and RNA is that DNA has ________ sugar, and RNA has ________ sugar

• deoxyribose; ribose

• ribose; deoxyribose

• single-stranded; double-stranded

• Uracil; Thymine

One difference between, regarding their shape, is that DNA is ________ , and RNA is ________

• deoxyribose; ribose

• double-stranded; single-stranded

• single-stranded; double-stranded

• Uracil; Thymine

One difference between, regarding their nitrogenous bases, is that DNA uses ________ , and RNA uses ________

• deoxyribose; ribose

• double-stranded; single-stranded

• Thymine; Uracil

• Uracil; Thymine

Why are proteins important in the human body?

• They provide the body with energy used for running.

• They do most of the work inside the cell and are used for structure and function of the body's organs.

• They are used for insulation.

• They are the genetic material inherited from both parents.

What are the monomers or building blocks of proteins?

• Lipids

• Amino acids

• Monosaccharides

• Nucleotides

Tags

NGSS.HS-LS1-6

Which of the following statements correctly describes events that occur during transcription?

• DNA is replicated in order to prepare for cell division.

• rRNA molecules carry amino acids to the nucleus.

• RNA polymerase builds a strand of mRNA using DNA as a template.

• All of the above

Which of the following statements correctly describes events that occur during translation?

• Amino acids join together in the ribosome, forming an amino acid chain (protein).

• tRNA molecules carry amino acids to the ribosome.

• The anticodon of the tRNA complementary base pairs with the codon on the mRNA strand.

• All of the above

The diagram to the right shows a typical animal cell. Drag each nucleic acid to the box within the cell that represents where it is most commonly found.

a

b

c

mRNA

DNA

tRNA

Tags

NGSS.MS-LS1-2