Question 1

A microtome is used to

Accepted Answer

A) dissect cellular organelles. 
B) slice thin sections of specimens. 
C) focus short wavelengths of light. 
D) view microscopic organisms. 
E) manipulate tiny objects. 
A) dissect cellular organelles. 
B) slice thin sections of specimens. 
C) focus short wavelengths of light. 
D) view microscopic organisms. 
E) manipulate tiny objects. B

Question 2

Once a scientific theory becomes a law, it

Accepted Answer

A) cannot be changed. 
B) becomes static. 
C) is subject to modification. 
D) is irrefutable. 
E) cannot be challenged. 
A) cannot be changed. 
B) becomes static. 
C) is subject to modification. 
D) is irrefutable. 
E) cannot be challenged. C

Question 3

Which of the following is true of a nanometer?

Accepted Answer

A) A nanometer is one millionth of a meter. 
B) A nanometer is about the size of a common bacterial cell. 
C) The nanometer is the most common measurement used in measuring whole cells. 
D) A nanometer is equivalent to 10 Angstoms (Å). 
E) none of the above 
A) A nanometer is one millionth of a meter. 
B) A nanometer is about the size of a common bacterial cell. 
C) The nanometer is the most common measurement used in measuring whole cells. 
D) A nanometer is equivalent to 10 Angstoms (Å). 
E) none of the above D

Question 4

Of the following specialized procedures, which may be used with the electron microscope?

Accepted Answer

A) scanning electron microscopy 
B) freeze fracturing 
C) shadowing with gold 
D) negative staining 
E) all of the above 
A) scanning electron microscopy 
B) freeze fracturing 
C) shadowing with gold 
D) negative staining 
E) all of the above

Question 5

Cell biology emerged from which of the following fields of biology?

Accepted Answer

A) genetics 
B) biochemistry 
C) cytology 
D) all of the above 
E) none of the above 
A) genetics 
B) biochemistry 
C) cytology 
D) all of the above 
E) none of the above

Question 6

In 1880, Walther Flemming identified , threadlike bodies seen in dividing cells.

Accepted Answer

The answer of In 1880, Walther Flemming identified , threadlike...

Question 7

Which of the following is closest to a micrometer in size?

Accepted Answer

A) the width of a strand of DNA 
B) a typical bacterial cell 
C) the length of a plant cell 
D) the size of a ribosome 
E) the length of a chicken egg 
A) the width of a strand of DNA 
B) a typical bacterial cell 
C) the length of a plant cell 
D) the size of a ribosome 
E) the length of a chicken egg

Question 8

Which of the following is smallest?

Accepted Answer

A) a mitochondrion 
B) a bacterium 
C) a virus 
D) a ribosome 
E) a protein 
A) a mitochondrion 
B) a bacterium 
C) a virus 
D) a ribosome 
E) a protein

Question 9

Which laws were formulated by Mendel?

Accepted Answer

A) heredity 
B) diffusion 
C) thermodynamics 
D) ideal gas laws 
E) gravity 
A) heredity 
B) diffusion 
C) thermodynamics 
D) ideal gas laws 
E) gravity

Question 10

The outcome of the joining of cytology and biochemistry yielded a better understanding of the cell by

Accepted Answer

A) identification of cellular biochemical pathways. 
B) identification of cellular structures. 
C) demonstration of bioinformatics. 
D) both A and B. 
E) both B and C. 
A) identification of cellular biochemical pathways. 
B) identification of cellular structures. 
C) demonstration of bioinformatics. 
D) both A and B. 
E) both B and C.

Question 11

Which of the following is NOT a tenet of the cell theory?

Accepted Answer

A) The cell is the basic unit of structure for all organisms. 
B) All cells arise from preexisting cells. 
C) All organisms consist of one or more cells. 
D) All cells have a membrane bound nucleus. 
E) none of the above 
A) The cell is the basic unit of structure for all organisms. 
B) All cells arise from preexisting cells. 
C) All organisms consist of one or more cells. 
D) All cells have a membrane bound nucleus. 
E) none of the above

Question 12

Which of the following can ONLY be viewed by electron microscopy?

Accepted Answer

A) frog eggs 
B) bacteria 
C) viruses 
D) mitochondria 
E) nuclei 
A) frog eggs 
B) bacteria 
C) viruses 
D) mitochondria 
E) nuclei

Question 13

The Latin phrase omnis cellula e cellula refers to a cellular principle. Which of the following statements is the best translation of this phrase?

Accepted Answer

A) Tissues are composed of similar cells. 
B) The cell is the basic unit of structure. 
C) Organs are composed of tissues and cells. 
D) All cells arise only from preexisting cells. 
E) Cells generally are found in clusters. 
A) Tissues are composed of similar cells. 
B) The cell is the basic unit of structure. 
C) Organs are composed of tissues and cells. 
D) All cells arise only from preexisting cells. 
E) Cells generally are found in clusters.

Question 14

is a biochemical technique that allows one to separate biological molecules based on size, shape, and/or affinity for specific molecules or functional groups.

Accepted Answer

The answer of is a biochemical technique that allows one...

Question 15

A scientist is examining motile protozoa. He wishes to determine their direction of movement. Which of the following microscopic techniques is least likely to be used to view these cells?

Accepted Answer

A) phase- contrast microscopy 
B) fluorescence microscopy 
C) light microscopy 
D) electron microscopy 
E) differential interference contrast microscopy 
A) phase- contrast microscopy 
B) fluorescence microscopy 
C) light microscopy 
D) electron microscopy 
E) differential interference contrast microscopy

Question 16

In 1665, used a microscope that he had built to examine thin slices of _ . While examining this material, he observed tiny compartments that he called cellulae.

Accepted Answer

A) Robert Brown; plant material 
B) Robert Hooke; cork 
C) Antonie van Leeuwenhoek; sperm cells 
D) Rudolf Virchow; collagen 
E) Theodor Schwann; animal tissue 
A) Robert Brown; plant material 
B) Robert Hooke; cork 
C) Antonie van Leeuwenhoek; sperm cells 
D) Rudolf Virchow; collagen 
E) Theodor Schwann; animal tissue

Question 17

Which of the following is NOT true of brightfield microscopy?

Accepted Answer

A) White light is utilized. 
B) Specimens usually must be fixed. 
C) Phase- contrast microscopy is a variant of brightfield microscopy. 
D) Specimens are always viewed without being stained. 
E) Light passes through the object being examined. 
A) White light is utilized. 
B) Specimens usually must be fixed. 
C) Phase- contrast microscopy is a variant of brightfield microscopy. 
D) Specimens are always viewed without being stained. 
E) Light passes through the object being examined.

Question 18

The scientific work that established DNA, rather than protein, as the molecule of heredity is credited to

Accepted Answer

A) Monod and Jacob. 
B) Watson and Crick. 
C) Correns, von Tschermak, and de Vries. 
D) Avery, MacLeod, and McCarty. 
E) Beadle and Tatum. 
A) Monod and Jacob. 
B) Watson and Crick. 
C) Correns, von Tschermak, and de Vries. 
D) Avery, MacLeod, and McCarty. 
E) Beadle and Tatum.

Question 19

All of the following biochemical techniques have allowed us to understand cell structure and function EXCEPT

Accepted Answer

A) ultracentrifugation. 
B) mass spectrometry. 
C) electrophoresis. 
D) light microscopy. 
E) chromatography. 
A) ultracentrifugation. 
B) mass spectrometry. 
C) electrophoresis. 
D) light microscopy. 
E) chromatography.

Question 20

You wish to obtain a pure mitochondria sample from lysed cells. The best way to obtain this sample would be

Accepted Answer

A) polyacrylamide gel electrophoresis. 
B) chromatography. 
C) agarose gel electrophoresis. 
D) centrifugation. 
E) both A and C. 
A) polyacrylamide gel electrophoresis. 
B) chromatography. 
C) agarose gel electrophoresis. 
D) centrifugation. 
E) both A and C.

Exam 1: A Preview of the Cell

A microtome is used to

Once a scientific theory becomes a law, it

Which of the following is true of a nanometer?

Of the following specialized procedures, which may be used with the electron microscope?

Cell biology emerged from which of the following fields of biology?

In 1880, Walther Flemming identified , threadlike bodies seen in dividing cells.

Which of the following is closest to a micrometer in size?

Which of the following is smallest?

Which laws were formulated by Mendel?

The outcome of the joining of cytology and biochemistry yielded a better understanding of the cell by

Which of the following is NOT a tenet of the cell theory?

Which of the following can ONLY be viewed by electron microscopy?

The Latin phrase omnis cellula e cellula refers to a cellular principle. Which of the following statements is the best translation of this phrase?

is a biochemical technique that allows one to separate biological molecules based on size, shape, and/or affinity for specific molecules or functional groups.

A scientist is examining motile protozoa. He wishes to determine their direction of movement. Which of the following microscopic techniques is least likely to be used to view these cells?

In 1665, used a microscope that he had built to examine thin slices of _ . While examining this material, he observed tiny compartments that he called cellulae.

Which of the following is NOT true of brightfield microscopy?

The scientific work that established DNA, rather than protein, as the molecule of heredity is credited to

All of the following biochemical techniques have allowed us to understand cell structure and function EXCEPT

You wish to obtain a pure mitochondria sample from lysed cells. The best way to obtain this sample would be

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: The Flow of Energy in the Cell

Enzymes: The Catalysts of Life

Membranes: Their Structure, Function, and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System and Peroxisomes

Signal Transduction Mechanisms: I Electrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Ii Messengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesion, Cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: DNA, Chromosomes, and the Nucleus

The Cell Cycle, Dna Replication, and Mitosis

Sexual Reproduction, Meiosis, and Genetic Recombination

Gene Expression: I the Genetic Code and Transcription

Gene Expression: II Protein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

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