Abiologist adds a vitamin solution, which acts as a co-factor, to an enzyme/substrate solution. what affect will this have on the enzymes in the solution?
a. it will increase the reactivity with the substrate.
b. it will decrease the reactivity with the substrate.
c. it will inhibit bonding between the enzyme and vitamins.
d. it will stimulate bonding between the enzyme and vitamins.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix. b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds. c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?