Ques:Q: What substances, which serve as catalysts, are involved in most of the chemical reactions that take place in organisms? Choices: - proteins - vitamins - carbohydrates - enzymes A:

Ans:enzymes
-----
Ques:Q: What are most protist diseases in humans caused by? Choices: - eukaryots - lice - ticks - protozoa A:

Ans:protozoa
-----
Ques:Q: Ebola is an example of a disease spread by what kind of infectious agent? Choices: - bacteria - colds - flus - virus A:

Ans:virus
-----
Ques:Q: Which process or force pulls rocks apart? Choices: - tactile stress - friction stress - composition stress - tension stress A:

Ans:
tension stress
-----