Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
1.
|
Which
of the following is NOT true of membranes? a. | Ribosomes are sometimes attached to folded
membranes. | b. | Endoplasmic reticulum is made up of folded
membranes. | c. | Folded membranes increase surface area for
efficiency. | d. | Folded membranes do not form compartments in the
cell. | | |
|
|
|
2.
|
In a
chloroplast, the stacks of membranous sacs are called _____. a. | thylakoid
membrane | c. | grana | b. | plastids | d. | stroma | | | | |
|
|
|
3.
|
When
a cell is ready to reproduce, its DNA is packed into _____. a. | nucleoids | c. | chromosomes | b. | chromatin | d. | nucleoli | | | | |
|
|
|
4.
|
One
advantage of electron microscopes over light microscopes is their _____. a. | two-dimensional
image | c. | size | b. | use of live specimens | d. | higher magnification | | | | |
|
|
|
5.
|
Each
of the following is a main idea of the cell theory except _____. a. | all cells are
similar in structure and function | b. | all organisms are composed of cells | c. | all cells come
from preexisting cells | d. | the cell is the basic unit of organization of
organisms | | |
|
|
|
6.
|
Cell
walls of multicellular plants are composed mainly of _____. a. | pectin | c. | cellulose | b. | chitin | d. | vacuoles | | | | |
|
|
|
7.
|
Folded membranes are an advantage to a cell because _____. a. | cell processes
can be more efficient | b. | the membranes provide a large surface
area | c. | the membranes
form interconnected compartments | d. | all of these | | |
|
|
|
8.
|
In a
typical animal cell, the cytoplasm occupies _____. a. | one quarter of
the volume | c. | a small part of
the volume | b. | almost all the volume | d. | a little more than half the volume | | | | |
|
|
|
9.
|
Which
of the following structures is the most complex? a. | organ | c. | organ system | b. | tissue | d. | cell | | | | |
|
|
|
10.
|
A
major difference between a compound light microscope and a transmission microscope is that a light
microscope image _____. a. | requires thin slices | b. | uses magnet
lenses | c. | can be made from living, unstained
materials | d. | allows you to see fine detail of
organelles | | |
|