The binding of a compound to an enzyme is observed to slow down or stop the rate of the reaction catalyzed by the enzyme. increasing the substrate concentration reduces the inhibitory effects of this compound. which of the following could account for this observation?

a)the compound reduces disulfide bonds, causing the enzyme molecules to partially unfold.
b)the compound causes a cofactor to be lost from the enzyme.
c)the compound forms a covalent bond with one of the amino acid residues needed for enzyme activity.
d)the compound is a negative allosteric regulator.
e)the compound is a competitive inhibitor.

The correct answer is option e) "The compound is a competitive inhibitor".

Explanation:

A competitive inhibitor is a compound that resembles the normal substrate of an enzyme, resulting in the enzyme binding to the inhibitor and preventing that the enzyme catalyzes the reaction. The effect of the inhibitor is to slow down or stop the rate of the reaction catalyzed by the enzyme. Usually the action of this type of inhibitor is reduced by an increase in the substrate's concentration. Therefore, the compound described in the question belongs to a competitive inhibitor.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

cellular respiration oxidizes food into energy in the form of atps.

glycolysis (6 c hexose) > 2x atps are used > 6c hexose biphosphate > 2 x 3c triphosphate >

2 x 3c pyruvate (2x nadh produced from nad) and (4x atp produced)

pyruvate actively pumped mitochondrial matrix.