Quiz on Protein Structure and Function

How do R groups affect protein structure?

• They determine the sequence of nucleotides

• They influence how a polypeptide folds

• They form the backbone of DNA

• They create peptide bonds

What is the quaternary structure of a protein?

• The sequence of amino acids

• The interaction of multiple polypeptides

• The folding of a single polypeptide

• The formation of hydrogen bonds

What is the primary structure of a protein?

• The sequence of nucleotides

• The sequence of amino acids

• The folding pattern

• The interaction of polypeptides

What is the function of hydrophobic side chains in proteins?

• They attract water molecules

• They keep proteins away from water

• They form hydrogen bonds

• They increase protein solubility

What is the sequence of the given nucleotide sequence translated into amino acids?

• Phe-Gly-Phe-Gly-Phe-Gly

• Gly-Phe-Gly-Phe-Gly-Phe

• Phe-Phe-Gly-Gly-Phe-Gly

• Gly-Gly-Phe-Phe-Gly-Phe

Tags

NGSS.HS-LS1-1

What happens to energy during a transformation according to the second law of thermodynamics?

• It becomes more organized.

• It remains constant.

• It increases in amount.

• It decreases in availability to do work.

Tags

NGSS.HS-PS3-4

What is the main source of energy for cells?

• Water.

• Sunlight.

• Food.

• Oxygen.

Tags

NGSS.HS-LS1-7

What is ATP and its role in the cell?

• A protein that speeds up reactions

• A lipid that stores energy

• A chemical energy carrier

• A nucleic acid that stores genetic information

Tags

NGSS.HS-LS1-7

What is the significance of the net ΔG being negative in coupled reactions?

• It indicates the reaction is at equilibrium

• It means the reaction requires energy input

• It shows the reaction is spontaneous

• It suggests the reaction is endergonic

What is the main difference between exergonic and endergonic reactions?

• Exergonic reactions require energy input, endergonic do not

• Exergonic reactions release energy, endergonic require energy

• Exergonic reactions are slower than endergonic

• Exergonic reactions are reversible, endergonic are not

Tags

NGSS.HS-PS1-4