Question

cumulative review #2
matching

1. monomer of dna
2. monomer of lipids
3. one certain enzyme fits one certain substrate exactly
4. balance in a living system
5. cell with a nucleus and many organelles
6. energy needed to start a reaction
7. molecule that has both carbon and hydrogen
8. monomer of a protein
9. these are on the left of a reaction, the things needed
10. to destroy
11. cell with no nucleus and no organelles
12. protein that speeds up a reaction
13. in plant cells in order for cells to maintain shape
14. responsible for photosynthesis in plants
15. packages and sorts proteins in the cell
16. only one in plant cells but several small in animal cells

a. prokaryote
b. amino acid
c. cell wall
d. denature
e. reactants
f. fatty acid
g. golgi
h. lock and key theory
i. organic
j. eukaryote
k. nucleotide
l. vacuole
m. chloroplast
n. enzyme
o. homeostasis
p. activation energy

Explanation:

1. DNA is made up of nucleotides.
2. Lipids are composed of fatty acids (and glycerol).
3. The lock and key theory states that one enzyme fits one substrate exactly.
4. Homeostasis is the balance in a living system.
5. Eukaryotes have a nucleus and many organelles.
6. Activation energy is the energy needed to start a reaction.
7. Organic molecules contain both carbon and hydrogen.
8. Proteins are made of amino acids.
9. Reactants are on the left side of a reaction.
10. Denature means to destroy (the structure of a protein, for example).
11. Prokaryotes have no nucleus and no membrane - bound organelles.
12. Enzymes are proteins that speed up reactions.
13. The cell wall helps plant cells maintain shape.
14. Chloroplasts are responsible for photosynthesis in plants.
15. The Golgi apparatus packages and sorts proteins.
16. Plant cells usually have one large vacuole, while animal cells have several small ones.

Answer:

1. K. Nucleotide
2. F. Fatty Acid
3. H. Lock and Key Theory
4. O. Homeostasis
5. J. Eukaryote
6. P. Activation energy
7. I. Organic
8. B. Amino Acid
9. E. Reactants
10. D. Denature
11. A. Prokaryote
12. N. Enzyme
13. C. Cell Wall
14. M. chloroplast
15. G. Golgi
16. L. Vacuole