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Multiple Choice Feedback Quiz
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1

Robert Hooke first described cells by looking at thin slices of
A)honeycomb.
B)skin.
C)cork.
D)bacteria.
2

Which of the following statements about the cell theory is true?
A)All organisms are composed of several cells.
B)The smallest living thing is a cell.
C)Life continues to evolve anew with each new cell.
D)New cells arise spontaneously when conditions are right.
3

What limits cell size?
A)Surface-to-volume ratio.
B)Speed of movement of materials from the middle to the periphery of the cell.
C)The bigger the cell, the less access there is from the interior of the cell to the external environment.
D)All of the above limit cell size.
4

Cystic fibrosis has all of the following characteristics except
A)is fatal if untreated
B)is a disease caused by a type of bacteria
C)is characterized by mucus buildup in pancreatic ducts
D)is associated with plasma membrane defects
5

Prokaryotic cells
A)have no membrane-bounded organelles
B)have a large nucleus containing hereditary information
C)comprise very complex individuals
D)are usually larger than eukaryotic cells
6

Eukaryotic cells
A)have membrane-bounded organelles
B)have a large nucleus containing hereditary information
C)are usually larger than prokaryotic cells
D)all of the above
7

The cytoskeleton
A)synthesizes proteins.
B)is composed of phospholipid molecules.
C)confers strength and flexibility to the cell.
D)serves as a hollow conduit or "pipeline" for materials throughout the cell.
8

Which of the following structures contain microtubules?
A)cilia
B)flagella
C)centrioles
D)all of the above
9

Chromosomes
A)are located in the nucleus.
B)contain DNA.
C)are only visible at certain times with a light microscope.
D)all of the above characterize chromosomes
10

Ribosomes
A)are synthesized in the inner region of the mitochondria.
B)are located on the endoplasmic reticulum or float freely in the cytoplasm.
C)pass through cilia.
D)are involved in the synthesis of sugars.
11

The endoplasmic reticulum
A)synthesizes minerals.
B)synthesizes carbohydrates and lipids.
C)functions as structural support for the cell.
D)synthesizes ribosomes.
12

Which of the following eukaryotic cellular organelles are made out of membranes?
A)the endoplasmic reticulum
B)mitochondria
C)the Golgi complex
D)all of the above
13

The net movement of molecules down a concentration gradient is
A)osmosis.
B)osmotic pressure.
C)diffusion.
D)exocytosis.
14

Which of the following can move freely across a plasma membrane?
A)sugar
B)protein
C)urea
D)water
15

A red blood cell placed in pure water will burst because
A)osmotic pressure increases inside the cell.
B)the solution surrounding the cell is hypotonic.
C)the cell is hypertonic.
D)all of the above
16

Which one of the following terms is not related to a substance entering a cell?
A)endocytosis
B)exocytosis
C)phagocytosis
D)pinocytosis
17

Free movement of molecules in either direction through channels in the plasma membrane is
A)osmosis.
B)diffusion.
C)active transport.
D)facilitated diffusion.
18

Movement of molecules through channels in the plasma membrane is only one direction with the expenditure of energy is
A)osmosis.
B)diffusion.
C)active transport.
D)facilitated diffusion.
19

The sodium-potassium pump
A)allows sodium to move freely into the cell.
B)can move molecules into the cell against the concentration gradient.
C)is one of the many different kinds of active transport channels.
D)removes potassium from the cell.
20

Chemical messengers within the cell are
A)molecules used in metabolism.
B)with-in cell hormones.
C)ions.
D)all of the above
21

Detoxification of potentially dangerous oxidizing moelcules occurs within the lysosome.
A)true
B)false
22

The Golgi complex synthesizes proteins.
A)true
B)false
23

Energy for the cell is generated by the mitochondrion.
A)true
B)false
24

Chloroplasts are found only in plants.
A)true
B)false
25

Cell vacuoles are comprised of empty space.
A)true
B)false
26

Cell walls in plants are composed of cellulose.
A)true
B)false
27

The chemical reactions of photosynthesis occur on the membranes of the mitochondrion.
A)true
B)false
28

Mitochondria are a kind of bacterial cell.
A)true
B)false
29

Chloroplasts are a kind of bacterial cell.
A)true
B)false
30

Some cell surface proteins respond to chemical signals called hormones.
A)true
B)false





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