North Carolina Science Grade 8

Chapter 16: Cells

Cells

1.
Which one of these is an example of a virus that can affect a range of hosts?
A)the rubella virus
B)the rabies virus
C)the varicella virus
D)the rhinovirus
2.
Which of these statements is supported by the cell theory?
A)Each cell in your body comes from a cell that has divided.
B)All organisms have multiple cells.
C)Only certain cells in your body divide to make new cells.
D)No organisms are composed of just one cell.
3.
Which of these scientists was NOT involved in discoveries about cells?
A)Theodor Schwann
B)Carl Sagan
C)Rudolf Virchow
D)Robert Hooke
4.
Edward Jenner developed the first vaccine that treated which of these viral diseases?
A)smallpox
B)herpes
C)hepatitis
D)AIDS
5.
An active virus ultimately __________ the host cell.
A)destroys
B)enlarges
C)duplicates
D)ignores
6.
To view extremely small organisms, which might you use?
A)an electron microscope
B)a concave lens
C)an eyepiece lens
D)a magnifying glass
7.
A lysosome's membrane disintegrates when __________.
A)a cell divides
B)a cell makes food
C)a cell dies
D)a cell gets rid of wastes
8.
__________ is a group of similar cells that work in unison to perform one function.
A)A tissue
B)A nucleus
C)A lysosome
D)A vacuole
9.
The nucleus is usually the largest __________ in a cell.
A)organ
B)chromosome
C)tissue
D)organelle
10.
If a microscope has an eyepiece lens with a power of 25X and an objective lens with a power of 50X, what is the microscope's total magnification power?
A)25X
B)75X
C)2X
D)1250X
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