Biochem

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

• They increase

• They decrease

• They remain unchanged

• They become irrelevant

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

Is a zwitterion a good buffer at its isoelectric point?

• Yes

• No

What does protonated mean?

• Gaining a proton

• Losing a proton

• Gaining an electron

• Losing an electron

What is the difference between a peptide and a protein?

• Peptides are longer chains of amino acids than proteins

• Proteins are longer chains of amino acids than peptides

• Peptides are made of nucleotides

• Proteins are made of nucleotides

Which pKs are the best at buffering in a polypeptide?

• The pKs of the terminal amino and carboxyl groups

• The pKs of the side chains

• The pKs of the peptide bonds

• The pKs of the entire polypeptide

What are some examples of prosthetic groups?

• Heme and Biotin

• Glucose and Fructose

• ATP and GTP

• DNA and RNA

What is being released at "A" in the diagram?

• Oxygen

• Glucose

• Water

• Carbon Dioxide

Tags

NGSS.HS-LS1-5