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WorksheetsUnit 3 Practice Test
Total questions: 13
Worksheet time: 11mins
Name
Class
Date
1.
Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?
a)
All living things are made of cells.
b)
All cells come from other preexisting cells.
c)
Cells form through spontaneous generation.
d)
Cells are the basic structural and functional units of life.
2.
The oldest fossils are those of tiny bacteria, which are classified as prokaryotes. Why are these organisms classified as prokaryotes?
a)
They are the first organisms that appeared on Earth
b)
They consist of cells that lack any genetic information
c)
They are single-celled organisms that no longer exist on Earth
d)
They are single-celled organisms that lack internal membrane-bound compartments.
3.
One difference between plant and animal cells is that animal cells do not have.
a)
a nucleus
b)
a cell membrane
c)
chloroplasts
d)
centrioles
4.
A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two very different organisms?
a)
Plants have cells but animals do not
b)
They are both made of one or more cells
c)
They both come from the same kind of cell
d)
They both come from a non-living organism
5.
Like all theories, the cell theory is never accepted by scientists as an “absolute truth.”Which statement best explains why?
a)
Future evidence may cause a theory to be modified or even rejected
b)
A scientific theory is not based on experimental evidence or observations.
c)
A theory is only a collection of hypotheses that have been verified by experimentation
d)
A theory evolves from collecting information, forming hypotheses, and then verifying the predictions of the hypotheses
6.
Which structure includes all of the others?
a)
nucleolus
b)
nucleus
c)
chromosomes
d)
genes
7.
Organisms are classified as either prokaryotes or eukaryotes. Which of the following would you find in all prokaryotic cells and eukaryotic cells?
a)
nucelus
b)
cell wall
c)
cytoplasm
d)
mitochondria
8.
What is the advantage of cells being so small?
a)
Small cells contain a greater quantity of enzymes than large cells.
b)
Small cells do not require energy and get everything they need from osmosis
c)
The cell has a smaller surface area to volume ratio which means it can move nutrients into the cell and waste out more efficiently
d)
The cell then has a larger surface area to volume ratio which means it can move nutrients into the cell and waste out more efficiently
9.
The diagram at right represents a cell of a green plant. Solar energy is used to produce energy-rich compounds in which structure?
a)
1- nucleus
b)
3 - cell membrane
c)
6- central vacuole
d)
7- chloroplast
10.
Which statement is correct about the organelles found in eukaryotic cells?
a)
Each type of organelle has a specialized function
b)
All the organelles have a very similar size and shape
c)
Each type of organelle can be found in all types of cell
d)
All the organelles contain the same chemical compounds
11.
Which cell structure is correctly paired with its primary function?
a)
cell membrane - protein synthesis
b)
mitochondrion - energy production (ATP)
c)
chloroplast - cell division
d)
nucleus - storage of nutrients
12.
Which cell structure is correctly paired with its primary function?
a)
ribosome - protein synthesis
b)
mitochondrion - movement
c)
vacuole - cell division
d)
nucleus - storage of nutrients
13.
Which type(s) of cells have genetic material that is contained in a nucleus?
a)
bacteria
b)
plants only
c)
animals only
d)
plants and animals
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