Q: In the body, what essential substance is pumped from the heart into arteries and then eventually into capillaries? Choices: - spinal fluid - water - lymphatic Fluid - blood A:
blood

Q: Where do most biochemical reactions take place? Choices: - stomach - upper atmosphere - outside of cells - within cells A:
within cells

Q: Q: Getting the same result when an experiment is repeated is called what? Choices: - mutation - initiation - repetition - replication A:
A: replication

Question: Q: Reducing the number of molecules in a rigid container causes what to decrease? Choices: - velocity - demand - energy - pressure A:
Answer: pressure

*Question*
Q: A biofilm is a colony of prokaryotes that is stuck to what? Choices: - the middle - the bottom - skin - surface A:
**Answer**
surface

(Q).
Q: What is the complex network of nervous tissue that carries electrical messages throughout the body? Choices: - respiratory system - circulatory system - lymphatic system - nervous system A:
(A).
nervous system