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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
biological catalysts present
C
kind of sugar found on each chromosome
D
number of chromosomes in the cell
2) Which group of organic compounds includes the enzymes?
A
proteins
B
nucleic acids
C
carbohydrates
D
starches
3) Experiments revealed the following information. It can be broken down into amino acids. This molecule is most likely a(n)
A
enzyme
B
monosaccharide
C
inorganic molecule
D
hormone
4) Which cell organelle synthesizes enzymes?
A
nucleus
B
cell membrane
C
vacuole
D
ribosomes
5) In order to survive, all organisms must carry out
A
heterotrophhic nutrition
B
enzyme controlled reactions
C
the process of reproduction
D
autotrophic nutrition
6) Only small amounts of enzymes are required fo reactions within cells because enzymes are
A
reused
B
small molecules
C
fragile
D
constantly synthesized
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
contains starch
D
is chemically specific
8) Why might heating an enzyme slow the rate at which the rate occurs?
A
it changes its shape
B
it kills the enzyme
C
it changes the substrate
D
the enzyme is specific
9) Enzymes influence chemical reactions in living systems by
A
affecting the rate at which reactions occur
B
becoming apart of the product after the after the reactions occur
C
combining with atomospheric gases
D
absorbing water during synthesis and digestion
10) All of these affect the rate of enzyme reaction expect
A
light
B
temperature
C
pH
D
enzyme concentration
*select an answer for all questions
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