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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
bacterium
B
virus
C
moss
D
alga
2) An organelle that releases energy for metabolic activity in a nerve cell is the
A
vacuole
B
ribosome
C
chloroplast
D
mitochondrion
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 organelle
B
an organ
C
a tissue
D
an organ system
4) every living cell contains molecules of
A
chlorophyll
B
hemoglobin
C
cellulose
D
protein
5) Cell organelles may be separated according to their densities by the use of
A
a compound light microscope
B
an ultracentrfiuge
C
an electron microscope
D
a microdissection instrument
6) All enzymes are examples of organic molecules known as
A
proteins
B
lipids
C
nucleic acids
D
carbohydrates
7) The shape, size, and internal structure of the mitochondrion have been revealed by
A
the development of wet mount techniques
B
electron-microscope studies
C
studies of the chemical activity of enzymes
D
detailed studies of chromosomes
8) Most of the herditary information that determines the traits of an organism is located in
A
certain genes in the vacuoles of body cells
B
the nuclei of body cells of an individual
C
the numerous ribosomes in certain cells
D
only the cells of an individual produced by meiosis
9) In a cell, information that controls the production of proteins must pass from the nucleus to the
A
cell membrane
B
mitochondria
C
chloroplasts
D
ribosomes
10) Homeostasis in unicellular organisms depends on the proper functioning of
A
organelles
B
guard cells
C
insulin
D
antibodies
*select an answer for all questions
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