1
Biology 100
Truesdale
Spring 2008
PRACTICE EXAM 1 KEY
Correct answers are in BOLD.
1. The chemical conversion of food molecules into useable energy and building materials is referred to as
______.
a. homeostasis
b. metabolism
c. adaptation
d. phosphorylation
e. none of these
2. In proteins, amino acids are linked together by a type of chemical bond called a ________ bond.
3. Plant cells have pigment-containing organelles called ______________.
4. In cells, polysaccharides can be broken down into monosaccharides which, in turn, can be broken down into
carbon dioxide, water and energy. This is an example of a _________pathway
.
5. Atoms that have lost or gained electrons are called “______________.”
a. compounds
b. molecules
c. ions
d. peptides
e. nucleotides
6. The process by which water molecules move from an area of high concentration through a membrane to an
area of low concentration is called ________________.
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- Homeostasis, a. homeostasis b., d. phosphorylation e., a. ionic b.
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