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Multiple Choice Quiz
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1

Which statement(s) is/are true?
A)Leeuwenhoek viewed little creatures and called them animalcules.
B)Hooke named the cell after the cubicles in a monastery.
C)Schleiden and Schwann stated theories about the cell being the fundamental units of life for plants and animals respectively.
D)All of the above.
2

The fluid mosaic model states that
A)The cell membrane is a phospholipid bilayer with embedded proteins and that it is in constant motion.
B)Water is repelled from both surfaces of the cell membrane.
C)There is a liquid portion between the parts of the cell membrane that facilitates the passage of molecules through the membrane.
D)All of the above.
3

Consider diffusion. When dynamic equilibrium is reached,
A)For reasons that are as yet undetermined, molecules no longer cross from one side of the membrane (or gradient) to the other.
B)Energy transfer ceases and so the molecules no longer cross the membrane (or gradient).
C)Molecules continue to move across the membrane (or gradient) but the net movement remains unchanged.
D)Molecules continue to move across the membrane (or gradient) and eventually the equilibrium is disrupted.
4

The diffusion of water through a selectively permeable membrane is known as
A)Osmosis.
B)Crenation.
C)Plasmolysis.
D)Turgidity.
5

A sac with a selectively permeable membrane filled with a 5% salt solution is placed in a beaker filled with a 10% salt solution. The fluid in the sac is __________ to the fluid in the beaker and eventually the sac will __________.
A)Hypertonic / shrivel up
B)Hypotonic / shrivel up
C)Hypertonic / burst
D)Hypotonic / burst
6

In order for facilitated diffusion to occur, it is necessary to have
A)ATP and a carrier such as a carrier protein.
B)Kinetic energy and a carrier such as a carrier protein.
C)ATP, but a carrier such as a carrier protein is not required.
D)Kinetic energy, but a carrier such as a carrier protein is not required.
7

In active transport,
A)Energy (such as is found in ATP) is required to move molecules against a gradient.
B)Molecules diffuse against a gradient.
C)Kinetic energy is required to move molecules against a gradient.
D)Either endocytosis or exocytosis will occur.
8

The endoplasmic reticulum is responsible for
A)Increasing the surface area where chemical reactions can occur.
B)Transporting substances throughout the cell.
C)Metabolizing fat and degrading toxic substances.
D)All of the above.
9

If a cell's ribosomes all became non-functional, the immediate result would be that that cell would no longer be able to
A)Digest incoming phagocytized particles.
B)Produce proteins.
C)Utilize its lysosomes and peroxisomes.
D)Repair its DNA.
10

The mitochondrion and the chloroplast are alike in which of the following ways?
A)Both have internal membranes that are, for the sake of chemical reactions, almost identical.
B)Both are involved in the conversion of energy from one form to another.
C)Both have structural compartments known as grana and stroma.
D)All of the above.
11

Microtubules, microfilaments, and intermediate filaments are parts of the
A)Cytoskeleton.
B)Centriole.
C)Centrosome.
D)Basal body.
12

Which statement(s) is/are true about the cilia and flagella?
A)If they are long, they are flagella; if they are short, they are cilia.
B)They both have a "9 + 2 arrangement" of microtubules.
C)They are both involved in movement - either of the cell or of external particles.
D)All of the above.
13

Cellular inclusions are
A)Essential to the survival of the cell.
B)Permanent sites for the storage of nutrients and wastes.
C)Collections of materials often lacking a well defined structure.
D)All of the above.
14

Which statement(s) is/are true about the nucleus?
A)Chromatin and chromosomes are identical except in spatial arrangement.
B)The nucleolus is an alternative (or immature) nucleus.
C)The nucleoplasm is the part of the matrix that gives the nucleus its internal rigidity.
D)All of the above.
15

A prokaryotic cell typically has __________ but does not have __________.
A)An extensive endoplasmic reticulum / a membrane bound nuclear area.
B)Ribosomes / a membrane bound nuclear area.
C)A membrane bound nuclear area / an extensive endoplasmic reticulum.
D)A membrane bound nuclear area / ribosomes.
16

Long cellular organelles of movement are:
A)cilia.
B)microfilaments inside cell.
C)flagella.
D)endoplasmic reticulum.
17

Structures which are not well defined within the cytoplasm are called:
A)microfilaments.
B)cytoplasmic inclusions.
C)protoplasm components.
D)pinocytic vesicles.
18

Water diffuses into a cell by
A)active transport.
B)facilitated diffusion.
C)phagocytosis.
D)osmosis.
19

The organelle composed primarily of DNA:
A)ribosome.
B)nucleoplasm.
C)nucleolus.
D)chromosome.
20

In the phospholipid layer of a cell membrane the ________ ends of the phospholipids are on the outside.
A)hydrophobic
B)hydrophilic
C)hypertonic
D)hypotonic
21

The diffusion gradient is the difference between
A)small and large particles.
B)soluble vs. insoluble.
C)high to low concentrations.
D)outside and inside a cell.
22

A cell that is 97% water is placed in pure water.
A)The cell is now in a hypertonic environment.
B)Solute will diffuse out of the cell until a point of equilibrium is reached.
C)The cell will shrink.
D)Water will diffuse into the cell.
23

Which of the following moves molecules from an area of low concentration to an area of high concentration?
A)osmosis
B)facilitated diffusion
C)active transport
D)all of the above
24

White blood cells (leukocytes) engulf invading bacteria and viruses by
A)pinocytosis.
B)budding.
C)active transport.
D)phagocytosis.
25

Which one of the following is NOT composed of membrane?
A)mitochondria
B)centrioles
C)chloroplasts
D)golgi bodies
26

Hydrolytic enzymes and proteins called defensins move from the ____ into the vacuole to destroy the microorganisms.
A)ribosomes
B)peroxisomes
C)mitochondria
D)lysosomes
27

Which of the following is not a component of a prokaryotic cell?
A)ribosomes
B)chloroplast
C)plasma membrane
D)chromatin
28

The site of protein synthesis is the
A)ribosome.
B)golgi apparatus.
C)nucleus.
D)mitochondria.
29

Protein molecules are required for
A)osmosis.
B)active transport and facilitated diffusion.
C)diffusion.
D)concentration gradients.







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