Question

1.

Which is NOT a function of chloride?

assists in regulating the body's fluid balance

in the form of hydrochloric acid, helps prepare food for digestion

assists in the transmission of nerve impulses

used in public water supplies to kill harmful bacteria

2.Antioxidants work by __________ free radicals.

destroying

reversing

copying

stabilizing

Answer 1

Question 1: NOT a function of chloride: assists in the transmission of nerve impulses

Explanation:
(a) assists in regulating the body's fluid balance:
Chloride is one of the most important electrolytes in the body. It has an important function in controlling the body's osmotic pressure gradient between the intracellular fluid (ICF) and extra-cellular fluid (ECF) and maintains hydration. It also helps maintain proper blood volume, blood pressure and pH of the bodily fluids.

(b) in the form of hydrochloric acid, helps prepare food for digestion:
Hydrochloride acid (HCl) is formed in the stomach by combining hydrogen and chloride, an ion of chlorine. HCl is predominantly utilized in the early stages of digestion. It helps by breaking down proteins for digestion and kills any unwanted bacteria present in the stomach.

(d) used in public water supplies to kill harmful bacteria:
Chlorine is also used as a disinfectant, to kill disease-causing pathogens, such as bacteria, viruses, and protozoans, when added to public water supplies. Chlorine attacks the pathogenic cell wall and destroys it thus killing the microbes present in water.

Transmission of nerve impulses occurs by changes in electrical potential across the membrane of a nerve by maintaining the concentration of Sodium (Na+) and Potassium (K+) ions. It has nothing to do with Chlorine.

Question 2: stabilizing

Explanation:
An antioxidant is a molecule that helps to stabilize or neutralize a free radical by donating an electron to it, without becoming destabilized themselves, thus stopping the free radical chain reaction. This process keeps free radicals in check and prevents it from causing any damage to the body.