Q: Which organisms get their energy source and carbon source from organic sources? Choices: - herbivores - ectomorphs - sporozoans - chemoheterotrophs A:
chemoheterotrophs

(Question)
Q: Natural selection cannot create new variations in organisms - these new variations must be created by what, which are usually associated with some sort of abnormality? Choices: - radiation - infection - pollution - mutation A:
(Answer)
mutation

Ques: Q: The burning of charcoal is what type of reaction? Choices: - condensation - physical - evaporation - combustion A:
Ans: combustion

(Q).
Q: What is the double-membrane structure that constitutes the outermost portion of the nucleus? Choices: - energy fold - nuclear fold - energy envelope - nuclear envelope A:
(A).
nuclear envelope

Ques:Q: What are the two components of a mixture called? Choices: - nutrients and a solvent - acid and base - concentration and a solvent - solute and a solvent A:

Ans:solute and a solvent

Q: The simplest class of organic compounds is the what? Choices: - particles - Phenols - gas - hydrocarbons A:
hydrocarbons