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