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Simple Multiple Choice
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1
The word root kytos, as in cytoplasm, means
A)motion
B)a hollow
C)color
D)a thing formed
2
The ____________ produces an image of a specimen by passing visible light through it.
A)LM
B)SEM
C)TEM
D)none of the above
3
A detailed three-dimensional view of cell structure is provided by
A)light microscopy
B)transmission electron microscopy
C)scanning electron microscopy
D)all of the above
4
____________ are an example of cells that are specialized for storage.
A)epithelial cells
B)fibroblast cells
C)adipocytes
D)oocytes
5
Which cells are designed to recognize and attack antigens?
A)muscle cells
B)neurons
C)erythrocytes
D)leukocytes
6
Which of the following is not true of the plasma membrane?
A)contains receptors for communication
B)forms intercellular connections
C)is a rigid sheet of molecules with little flexibility
D)regulates material movement into and out of the cell
7
Extracellular fluid is also called
A)cytosol
B)intracellular fluid
C)interstitial fluid
D)cytoplasmic matrix
8
Plasma membranes contain all of the following except
A)phospholipids
B)peripheral steroids
C)integral proteins
D)glycolipids
9
Which of the following is not a protein-specific function of plasma membranes?
A)signal transduction
B)intercellular attachment
C)enzyme activity
D)physical isolation
10
All processes of moving materials across the plasma membrane are classified as either
A)diffusion or osmosis
B)passive or active transport
C)phagocytosis or pinocytosis
D)endocytosis or exocytosis
11
Processes that move molecules passively across the cell membrane include
A)diffusion
B)bulk filtration
C)osmosis
D)all of the above
12
Diffusion is the tendency of molecules to move
A)from a lower to a higher concentration
B)down their concentration gradient
C)into a cell by endocytosis
D)out of a cell by exocytosis
13
Which of the following are types of endocytosis?
A)facilitated diffusion and bulk filtration
B)osmosis and active transport
C)pinocytosis and phagocytosis
D)none of the above
14
A pocket formed by an inward folding of a membrane is called
A)an evagination
B)an invagination
C)a secretory vesicle
D)a vacuole
15
Cytosol
A)has a high water content, with many dissolved solutes
B)is the viscous, syruplike fluid component of cytoplasm
C)contains carbohydrates and lipids that provide energy for the cell
D)all of the above
16
Which organelles synthesize proteins?
A)ribosomes
B)nucleoli
C)centrioles
D)all of the above
17
Digestion and self-destruction are functions of which organelle?
A)nucleus
B)mitochondrion
C)lysosome
D)peroxisome
18
Which one of the following does not accurately describe microtubules?
A)composed of long chains of the protein tubulin
B)largest diameter of the three components of the cytoskeleton
C)associated with organelle movement and cell motility
D)participate in cytoplasmic streaming and muscle contraction
19
Most of a cell's ATP is synthesized by membrane-bound organelles called
A)ribosomes
B)mitochondria
C)lysosomes
D)nucleoli
20
The rough endoplasmic reticulum functions in
A)transport, respiration, and synthesis
B)contraction, transport, and diffusion
C)synthesis, storage, and transport
D)storage, transport, and digestion
21
Which organelle modifies, packages, and sorts proteins for secretion or use within the cell?
A)Golgi apparatus
B)lysosome
C)endoplasmic reticulum
D)nucleus
22
The most organized level of genetic material, visible with a light microscope only during cell division, is the
A)histone
B)chromatin
C)chromosome
D)nucleosome
23
Nucleoli make which of the following?
A)smooth and rough endoplasmic reticulum
B)ribosomal RNA and proteins
C)histones and DNA
D)all of the above
24
Which phase of a somatic cell's life cycle is the longest?
A)prophase
B)anaphase
C)metaphase
D)interphase
25
The correct sequence of the stages of mitosis is
A)metaphase, anaphase, telophase, prophase
B)prophase, anaphase, metaphase, telophase
C)telophase, metaphase, anaphase, prophase
D)prophase, metaphase, anaphase, telophase
26
During which stage of mitosis does chromatin coil into chromosomes?
A)metaphase
B)telophase
C)prophase
D)anaphase
27
The two copies of DNA in duplicated chromosomes are connected at a constricted region called the
A)double helix
B)centromere
C)centrosome
D)histone
28
____________ occurs when the chromosomes line up at the equatorial plate of the cell.
A)prophase
B)metaphase
C)anaphase
D)telophase
29
Sister chromatids pull apart to form single-stranded chromosomes during
A)anaphase
B)telophase
C)prophase
D)metaphase
30
The completion of ____________ marks the end of cell division.
A)prophase
B)cytokinesis
C)interphase
D)anaphase







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