WorksheetsDiscovering Cells
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
How does magnification occur in an electron microscope?
a)
an electron beam creates an image
b)
an electron beam makes the object become larger
c)
light is changed into electrons by a convex lens
d)
light is reflected by an electron beam
2.
Which of the following statement is NOT part of the cell theory?
a)
All cells are produced from other cells.
b)
Cells can absorb food and oxygen.
c)
All living things are composed of cells.
d)
Cells are the basic units of structure and function in living things.
3.
The scientist that looked at pond water under a microscope to discover "animalcules" was
a)
Hooke
b)
Schleiden
c)
Leeuwenhoek
d)
Virchow
4.
A cell's functions can include obtaining food and water and getting rid of
a)
cells.
b)
microscopes.
c)
waste.
d)
organisms.
e)
resolution.
5.
If a compound microscope has a 10X lens in its eyepiece and a 20X lens in its nosepiece, its total magnification is _______ times the original size.
a)
20
b)
200
c)
30
d)
300
6.
All cells come from other cells.
a)
true
b)
false
7.
Cell theory is the basic unit of structure and function in living things.
a)
True
b)
false
8.
Robert Hooke was the first person to see living cells through his microscope.
a)
true
b)
false
9.
A compound microscope can magnify an object more than a single lens can.
a)
true
b)
false
10.
Electron microscopes give lower magnification and poor resolution compared to light microscopes.
a)
true
b)
false
11.
Resolution is the degree to which two separate structures that are close together can be distinguished.
a)
true
b)
false
12.
After much research, Matthias Schleiden concluded that
a)
all animals are made of cells
b)
all plants are made of cells
c)
all cells come from cells
d)
pond water is teeming with life
13.
When we talk of "structure" we are considering
a)
how something works
b)
how life reproduces
c)
how something is put together
d)
what a process produces
14.
Cell functions include getting food and water, getting rid of waste, and ...
a)
obtaining oxygen
b)
reproducing
c)
finding a living space
d)
growing and developing
15.
The widely accepted explanation of the relationship between cells and living things is called...
a)
The Theory of living cells
b)
Cell Law
c)
The Cell Hypothesis
d)
Cell Theory
16.
In 1855 Rudolf Virchow made this proposal...
a)
all plants are made of cells
b)
all cells come from cells
c)
all animals are made of cells
d)
cells are living things
17.
For a microscope to be useful, it must combine two important properties-magnification and ...
a)
color
b)
resolution
c)
objectivity
d)
pixlation
18.
Compound microscopes focus ____ through lens to produce a magnified image.
a)
electrons
b)
light
c)
protons
d)
neutrons
19.
While observing a sample through a microscope, you adjust the objective lens to a power of 50x. Assuming a 10x eyepiece, the total magnification is ...
a)
50x
b)
500x
c)
0.5X
d)
5,000x
20.
All animals are made of cells was stated by this man.
a)
Charles Darwin
b)
Matthias Scheiden
c)
Theodore Schwann
d)
Victor Virchow
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