1. The molecular "machines" (those components that do things) of the cell are the:
a. proteins.
b. carbohydrates
c. DNA
d. energy
e. homeostasis
2. Phosphorous, look it up in the Periodic table and answer the following questions:
a) What is its chemical symbol?
b) How many neutrons does it have?
c) How many protons?
d) How many electrons in its second shell?
3. A mutation is a change in:
a. homeostasis.
b. the developmental pattern in an organism.
c. metabolism.
d. DNA.
e. the life cycle of an organism.
4. _________ is the main molecule providing energy for intracellular (within a cell) processes.
5. The chemical processes in the living cell are collectively called
a. adaptation.
b. homeostasis.
c. evolution.
d. respiration.
e. metabolism.