Review: Biochemistry

A section of DNA has these bases:

TAG CAG TAC

Which mRNA sequence is produced from this DNA section?

• ATC GTC ATG

• AUC GUC AUG

• AUG CUG AUC

• UTC GTC UTG

Waxes create a waterproof layer on the outside of some living organisms. To which group of organic molecules do waxes belong?

• carbohydrates

• lipids

• nucleic acids

• proteins

Which best summarizes the role of DNA in the production of proteins?

• DNA moves to the cytoplasm to build proteins

• DNA transports amino acids to the ribosomes to make proteins

• DNA contains the instructions used to make proteins

• DNA breaks hydrogen bonds between amino acids

Tags

NGSS.HS-LS1-1

What carries the instructions for making amino acids in a protein?

• the nitrogen base on the tRNA

• the hydrogen bonding between nitrogen bases

• the sequence of nitrogen bases on the mRNA

• the nitrogen base bonding on the DNA molecule

Tags

NGSS.HS-LS1-1

Which effect could a mutation in mRNA have on the production of proteins?

• the protein produced will have a different identity

• the protein produced will have a coiled shape

• the protein produced will have a coiled shape

• the protein produced will produce excess water

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Salivary amylase is an enzyme in humans that breaks down starches. What substance would humans have difficulty digesting without this enzyme?

• lipids

• nucleic acids

• proteins

• carbohydrates

Which best explains why the rate of a biochemical reaction decreases at high temperatures?

• the activation energy increases

• the shape of the enzyme changes

• the enzyme-substrate complex forms

• the bonds between substrates are broken

During translation, what does the tRNA deliver to the ribosomes?

• amino acids

• DNA

• mRNA

• proteins

Which molecules are joined together to make proteins?

• fatty acids

• nucleic acids

• amino acids

• acetic acids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

What function is shared by both lipids and carbohydrates

• Energy storage

• Membrane transport

• structure

• storage of genetic information