Download Cells

Name: ___________________________________ Date: ____________
7thGrade Science
Mr. Vorstadt
Section TEST B
_____ 1. Which of the following terms means the tiny structures found within?
many cells that each has a specific function?
A) Tissues
B) Organs
C) Organelles
D) Organ Systems
_____ 2. Which theory states that all living organisms are made of cells, that all
cells come from pre-existing cells, and that cells are the smallest living unit of
life?
A) Cell Theory
B) Gravitational Theory
C) Atomic Theory
D) Evolutionary Theory
_____ 3. What does the term multicellular mean?
A) An organism that is made of only one cell.
B) An organism that is made of only two cells.
C) An organism that is made of dozens of cells.
D) An organism that is made of many cells.
_____ 4. What does the term unicellular mean?
A) An organism that is made of only one cell.
B) An organism that is made of only two cells.
C) An organism that is made of dozens of cells.
D) An organism that is made of many cells.
_____ 5. Which of the following terms identifies the smallest living part of living
organisms?
A) Molecules B) Atoms
C) Organs D) Cells
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6. What is the name of the cell organelle shown below?
A) Cytoplasm
B) Nucleus
C) Mitochondria
D) Ribosome
___________________ 7. Is this cell an example of a
plant or animal cell?
_____ 8. Which of the following terms means that a membrane allows most
materials to pass through it?
A) Equilibrium
B) Impermeable C) Permeable
_____ 9. What does the term osmosis mean?
A) Movement of fleas from low to high concentration.
B) Movement of mice from high to low concentration.
C) Movement of water from low to high concentration.
D) Movement of water from high to low concentration.
_____ 10. What does the term passive transport or diffusion mean?
A) That energy is needed to move molecules.
B) That molecules move from low to high concentration.
C) That no energy is needed to move molecules.
D) That molecules move from high to low concentration.
_____ 11. Generally, how do particles move by diffusion from one area to another.
A) From high concentration to low concentration.
B) From low concentration to high concentration.
C) From high temperature to low temperature.
D) From low temperature to high temperature.
_____ 12. Which type of microscope uses light passing through a lens to view small
objects?
A) Electron Microscope B) Compound Light Microscope
C) Nuclear Fusion Microscope
_____ 13. Which of the following statements are true of active transport?
A) Energy is needed to move molecules across the membrane.
B) Molecules move from low to high concentration.
C) Energy is not needed to move molecules across the membrane.
D) Molecules move from high to low concentration
_____ 14. A migrating bird needs a large amount of energy. Which life process
directly provides this energy?
A) synthesis B) respiration
C) excretion
D) regulation
_____ 15. All organisms have structures that remove wastes such as CO 2 and
excess H2O. This life process is
A) nutrition
B) regulation C) respiration D) excretion
_____ 16. A life process that is not necessary to the survival of the individual
organism is
A) excretion
B) reproduction
C) respiration
D) nutrition
_____ 17. Which structures are found in a cell from a dog?
A) cytoplasm, nucleus, chloroplast
B) cytoplasm, nucleus, cell wall
C) cytoplasm, nucleus, cell membrane
D) cytoplasm, cell membrane, cell wall
_____ 18. Which cell structure controls most cell activities?
A) cytoplasm B) nucleus C) cell membrane
D) Chloroplast
_____ 19. The movement of material into and out of the cell is controlled by the
A) cytoplasm B) nucleus C) cell membrane D) Chloroplast
_____ 20. A signal to which an organism reacts is called a (an)
A) stimulus B) response C) action D) environment
_____ 21. All organisms directly or indirectly obtain energy from
A) excretion B) plants C) animals D) the sun
_____ 22. The process by which food is broken down into simpler substances is
called ?
A) ingestion B) digestion C) respiration D) excretion.
_____ 23. The diagram below shows a simple microscope. Four parts of the
microscope are labeled A, B, C, and D.
Which part of the microscope is used to bring the image
of the object on the slide into focus?
A) A
B) B
C) C
D) D
_____ 24. In which process is oxygen used to release the energy stored in food?
A) photosynthesis B) respiration C) digestion D) reproduction
_____ 25. Which statement describes a method of sexual reproduction that occurs
in plants?
A) stem cuttings are placed in water and grow roots.
B) Seeds are produced from the flower of the plant.
C) Underground stems from a plant grow into new plants.
D) A leaf falls to the soil, develops roots, and grows.
_____ 27. Which focus knob provides a sharper image?
A) coarse B) fine C) stage D) base
_____ 28. Which focusing knob/adjustment do you first use when you begin looking
at a slide?
A) fine B) coarse C) ocular D) body tube
_____ 29. What is another name for the eyepiece?
A) ocular B) body tube C) arm D) fine adjustment
_____ 30. How much are you magnifying something when you are using 10X
oculars and the
10X objectives?
A)
1,000 times B)
10 times
C)
100 times
D)
10,000 times
Base your
diagram below
knowledge of
answers on the
and on your
science. The
diagram shows a cell with some basic cell structures labeled.
Identify two structures labeled in the diagram, other than the large vacuole, that
indicate this cell is a plant cell.
31) ______________________________________
32) ______________________________________
_____ 33. What do you grasp when moving the microscope?
A) ocular and light
B) arm and base
C) fine and coarse adjustment
D) stage and base
Base your answers on the diagrams, key, and on your knowledge of science. The
diagrams show two cells and some of their structures.
34. Which cell structure shown in the diagrams contains genetic material?
____________________________________________
35. Which structure shown in the plant cell diagram is the site of photosynthesis?
____________________________________________
List three structures that are found in both plant and animal cells.
36) _________________________________________
37) _________________________________________
38) _________________________________________
A student observed a cell using the microscope. He sketched the following two
diagrams in his notebook. State a reason that the same cell appeared different during
his observations.
A
B
38.
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_____ 39. What is the approximate size of the cell illustrated in the diagram
below?
A) 2.0 mm
B) 1.5 mm
C) 1.0 mm
D) 0.5 mm
A student is observing green plant cells with the microscope. She notices that the
chloroplasts are moving. The student wonders if temperature affects this motion.
40) State the question.
____________________________________________________
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41) Write a hypothesis.
____________________________________________________
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42) Identify the manipulated (independent) variable _________________________
List three factors that should remain constant
43) _____________________________________________
44) _____________________________________________
45) _____________________________________________
Name: ___________________________________ Date:_____________
8thGrade Science
Mr. Vorstadt
Section 1 Review 5 points for Test
Vocabulary:
Cells
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Cell Theory
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Unicellular_____________________________________________________________
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Multicellular
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Organelles
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Mitochondria
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Nucleus
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Cell Membrane
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Chloroplast
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Diffusion
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Osmosis
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Active Transport
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Ribosome
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Cytoplasm
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Vacuole
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Cell Wall
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Stimulus
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Photosynthesis
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Reproduction
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Excretion
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Respiration
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Digestion
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Ocular
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Fine Adjustment Knob
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Coarse Adjustment Knob
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Hypothesis
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Data
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Independent Variable
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Dependent Variable
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Constant
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