Florida Science Grade 6

Section 1: The World of Cells

The World of Cells

1.
What is the smallest unit of life in all living things called?
A)an atom
B)a molecule
C)bacteria
D)a cell
2.
What object did Robert Hooke first observe cells in?
A)a leaf
B)a muscle
C)a bacterium
D)a cork
3.
The statement that all cells come from cells that already exist is part of __________.
A)the cell theory
B)the reproductive theory
C)the fossil record
D)Hooke's theory
4.
Which of the following are the smallest organisms on Earth?
A)algae
B)shrimp
C)bacteria
D)mold
5.
What part of the cell helps control what enters and leaves the cell?
A)nucleus
B)cytoplasm
C)mitochondrion
D)cell membrane
6.
Which two structures do plant cells have that animal cells do not have?
A)chloroplasts and a cell wall
B)vacuoles and chloroplasts
C)chromosomes and chlorophyll
D)cell membrane and a nucleus
7.
Cytoplasm is made mostly of _________.
A)chemicals
B)water
C)gelatin
D)vitamins
8.
Where is the hereditary material located in the cell?
A)the nucleus
B)the mitochondrion
C)the vacuole
D)the cell membrane
9.
Where does cellular respiration occur?
A)in the lungs
B)in the vacuole
C)in the chloroplasts
D)in the mitochondrion
10.
Plants, algae, and many bacteria make their own food through the process of __________.
A)photosynthesis
B)cellular respiration
C)metabolism
D)digestion
11.
Chloroplasts capture energy from the __________ to make food.
A)Moon
B)stored sugar
C)soil
D)Sun
12.
What type of instrument is used to look at cells?
A)microscope
B)glasses
C)telescope
D)binoculars
13.
If a microscope has a lens with a power of 20X, how many times will it magnify something?
A)2 times its actual size
B)200 times its actual size
C)2,000 times its actual size
D)20 times is actual size
14.
What determines which traits an organism will have?
A)cytoplasm
B)DNA
C)the nucleus
D)the mitochondrion
15.
Which of the following does NOT have organelles?
A)plants
B)algae
C)bacteria
D)fungi
16.
Which of these is similar in function to a vacuole?
A)a bakery manager
B)a wall
C)a closet
D)an electric circuit
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