Biochem Chapter 3

What are some functions of proteins?

• Energy storage

• Catalysis of biochemical reactions

• Genetic information storage

• Photosynthesis

Tags

NGSS.HS-LS1-1

Which amino acid does not have a chiral center?

• Glycine

• Alanine

• Serine

• Valine

Which amino acids are primarily metabolized in muscle?

• Leucine, Isoleucine, and Valine

• Glycine, Alanine, and Serine

• Methionine, Cysteine, and Proline

• Lysine, Arginine, and Histidine

Where are the remaining amino acids primarily metabolized?

• Brain

• Liver

• Kidneys

• Heart

What does it mean for an amino acid to be glucogenic?

• It can be converted into glucose

• It can be converted into ketone bodies

• It can be converted into fatty acids

• It can be converted into nucleic acids

What are some amino acid derivatives?

• Insulin and Glucagon

• Dopamine and Thyroxine

• Hemoglobin and Myoglobin

• Collagen and Elastin

What happens to the pKas of amino acids that are bound in peptide bonds?

• They increase

• They decrease

• They remain unchanged

• They become irrelevant

Where is an amino acid the best buffer?

• At its isoelectric point

• At its pKa values

• At a neutral pH

• At a basic pH

What is a zwitterion?

• A molecule with no charge

• A molecule with both positive and negative charges

• A molecule with only positive charges

• A molecule with only negative charges

Tags

NGSS.HS-PS1-3

Is a zwitterion a good buffer at its isoelectric point?

• Yes

• No