Q: What substances are involved in most of the chemical reactions that take place in organisms, including digestion? Choices: - proteins - hormones - vitamins - enzymes A:
enzymes

(Question)
Q: What part of the body do ants use to detect chemicals? Choices: - thorax - fins - eyes - antennae A:
(Answer)
antennae

Ques: Q: The pull of gravity is expressed as a force of what? Choices: - joule - pascal - volt - newtons A:
Ans: newtons

(Q).
Q: With a shape that specially suits its function of sending nerve signals to other cells, the human nerve cell is an example of what? Choices: - adaptation - maturation - evolution - specialization A:
(A).
specialization

Ques:Q: By allowing blood levels of a hormone to be regulated within a narrow range, feedback loops contribute to maintaining what state? Choices: - hypothesis - hibernation - consciousness - homeostasis A:

Ans:homeostasis

Q: What do many scientists think are the oldest eukaryotes? Choices: - prokaryotes - plants - arthropods - protists A:
protists