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