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Cells 1.5 #1
Test Description: Enzymes
Instructions: Answer all questions to get your test result.
1) In the body of a human, the types of chemical activities occuring within cells are most dependent on the
A
size of the cell
B
number of chromosomes in the cell
C
kind of sugar found on each chromosome
D
biological catalysts present
2) Which group of organic compounds includes the enzymes?
A
proteins
B
starches
C
nucleic acids
D
carbohydrates
3) Experiments revealed the following information. It can be broken down into amino acids. This molecule is most likely a(n)
A
hormone
B
inorganic molecule
C
monosaccharide
D
enzyme
4) Which cell organelle synthesizes enzymes?
A
vacuole
B
ribosomes
C
nucleus
D
cell membrane
5) In order to survive, all organisms must carry out
A
the process of reproduction
B
heterotrophhic nutrition
C
enzyme controlled reactions
D
autotrophic nutrition
6) Only small amounts of enzymes are required fo reactions within cells because enzymes are
A
constantly synthesized
B
fragile
C
small molecules
D
reused
7) The enzyme salivary amylase will act on starch but not on protein. This action illustrates that salivary amylase
A
is chemically specific
B
lacks protein
C
is not reusable
D
contains starch
8) Why might heating an enzyme slow the rate at which the rate occurs?
A
the enzyme is specific
B
it changes the substrate
C
it kills the enzyme
D
it changes its shape
9) Enzymes influence chemical reactions in living systems by
A
becoming apart of the product after the after the reactions occur
B
combining with atomospheric gases
C
absorbing water during synthesis and digestion
D
affecting the rate at which reactions occur
10) All of these affect the rate of enzyme reaction expect
A
light
B
temperature
C
enzyme concentration
D
pH
*select an answer for all questions
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