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Questions and Answers

Gibbs free energy is more likely negative when_________.

entropy increases and enthalpy is low (correct)

entropy decreases and enthalpy is high

entropy and enthalpy are high

entropy and enthalpy are low

What is the function of proteins inside cells?

they can serve as structural support

they can play a role in ligand recognition and signal transduction

they can reduce bacterial loads through forming barriers on cells

All of the above (correct)

The variable region on the surface of an antibody interacts specifically with an antigen through____.

many weak noncovalent interactions, such as van der Waals interactions and hydrogen bonds (correct)

exlusively covalent interactions

many weak covalent interactions

hydrophobic interactions

A protein can interact with water and lipds because__________

it has polar and hydrophobic amino acids. Signup and view all the answers

Which method is most suitable for determining the location of a protein inside the cell?

confocal microscopy Signup and view all the answers

Triacyglycerols are ________.

the most common fat storage molecules in cells Signup and view all the answers

The word "nucleoside" refers to_______.

the nitrogen base and sugar ring Signup and view all the answers

Hydrogen bonding between NH and C=O groups of every 4th amino acid within the polypeptide backbone results in which type of folding pattern?

α helix (D) Signup and view all the answers

Linkage of nucleotides into nucleic acid chains occurs through a , leading to .

condensation reaction; phosphodiester bond formation Signup and view all the answers

How does binding of a signaling molecule to its receptor affect its activity?

All of the above Signup and view all the answers