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Cells 2
Test Description: More regents practice on cells and their organelles.
Instructions: Answer all questions to get your test result.
1) Which organism is considered an exception to the cell theory because it has a noncellular structure?
A
alga
B
virus
C
bacterium
D
moss
2) An organelle that releases energy for metabolic activity in a nerve cell is the
A
chloroplast
B
vacuole
C
mitochondrion
D
ribosome
3) the respiratory system includes a layer of cells in the air passages that clean the air before it gets to the lungs. This layer of cells is classified as
A
an organ
B
an organelle
C
a tissue
D
an organ system
4) every living cell contains molecules of
A
protein
B
chlorophyll
C
hemoglobin
D
cellulose
5) Cell organelles may be separated according to their densities by the use of
A
a microdissection instrument
B
a compound light microscope
C
an electron microscope
D
an ultracentrfiuge
6) All enzymes are examples of organic molecules known as
A
nucleic acids
B
proteins
C
carbohydrates
D
lipids
7) The shape, size, and internal structure of the mitochondrion have been revealed by
A
detailed studies of chromosomes
B
studies of the chemical activity of enzymes
C
the development of wet mount techniques
D
electron-microscope studies
8) Most of the herditary information that determines the traits of an organism is located in
A
the numerous ribosomes in certain cells
B
only the cells of an individual produced by meiosis
C
the nuclei of body cells of an individual
D
certain genes in the vacuoles of body cells
9) In a cell, information that controls the production of proteins must pass from the nucleus to the
A
mitochondria
B
cell membrane
C
chloroplasts
D
ribosomes
10) Homeostasis in unicellular organisms depends on the proper functioning of
A
guard cells
B
organelles
C
antibodies
D
insulin
*select an answer for all questions
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