Which statement about the binding of enzymes and substrates is correct?
a. substrate molecules bind to the active site of the enzyme only by weak bonds, such as hydrogen bonds or hydrophobic attraction.
b. substrate molecules fit into the active site of an enzyme like a key fits into a lock.
c. when substrate molecules bind to the active site of the enzyme, the enzyme undergoes a slight change in shape.

Answers a. and c. should be correct.

Explanation:

Enzymes help increase the rate in which a chemical reaction occurs. The interactions between the enzyme and the substrate induced conformational changes in the enzyme that facilitate and strengthen the binding with its substrate. That is called the induced fit model. Before this model, scientists explain the binding of enzyme and substrate as a “lock-and-key”. There are four type of weak interactions by which enzymes and substrates bind each other: 1) hydrogen bonds, 2) electrostatic interactions, 3) hydrophobic interactions and 4) van der Waals interactions. The strong binding between the enzyme and its substrate is the addition of several weak interactions working together.

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).