Enzymes that catalyze endergonic reactions are likely to bind
a. to atp.
b. to phosphate.
c. to each other.
d. to adp.

Enzymes that catalyze endergonic reactions are likely to bind to ATP.

Option A

Explanation:

Endergonic reactions are mostly exothermic reactions in which the products are in a higher energy state than that of the reactants, such reactions requires an extra supply of energy  Thereby the enzymes that catalyse the reaction bind to ATP for energy .

In body's metabolism these endergonic reactions are considered to be anabolic. The metabolic reactions of the body are divided into anabolic and catabolic reactions, that is the building up and breaking down reactions.

it would be c. xylem.

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.