Q: What consists of a nitrogen atom bonded to some combination of carbons and hydrogens? Choices: - an alkali - a metalloid - a chloride - an amine A:
an amine

(Question)
Q: What chemical element is required for a combustion reaction ? Choices: - carbon - helium - nitrogen - oxygen A:
(Answer)
oxygen

Ques: Q: Which hormone helps cells absorb sugar from the blood? Choices: - estrogen - cortisol - adrenaline - insulin A:
Ans: insulin

(Q).
Q: The angle at which light bends when it enters a different medium is known as what? Choices: - bounce - frequency - resonance - refraction A:
(A).
refraction

Ques:Q: What disease refers to the dangerous buildup of fatty materials in blood vessels? Choices: - gout - fibrosis - arthritis - atherosclerosis A:

Ans:atherosclerosis

Q: What is something that all machines must overcome? Choices: - stress - work - temperature - friction A:
friction