Question 1

Gregor Mendel was most influential in which field of biology?

Accepted Answer

A) genetics 
B) chromatography 
C) biochemistry 
D) bacterial transformation 
E) cytology 
A) genetics 
B) chromatography 
C) biochemistry 
D) bacterial transformation 
E) cytology

Question 2

________ 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...

Question 3

All of the following are model organisms,except

Accepted Answer

A) Saccharomyces cerevisiae. 
B) Drosophila melanogaster. 
C) Caenorhabditis elegans. 
D) Arabidopsis thialana. 
E) Homo sapiens. 
A) Saccharomyces cerevisiae. 
B) Drosophila melanogaster. 
C) Caenorhabditis elegans. 
D) Arabidopsis thialana. 
E) Homo sapiens.

Question 4

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

Accepted Answer

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

Question 5

Which of the following is true of fluorescence microscopy?

Accepted Answer

A) Fluorescent light is emitted throughout the specimen being viewed. 
B) Fluorescence microscopy is best at viewing rounded, thicker specimens. 
C) Fluorescence microscopy is used to view dead specimens only. 
D) Fluorescence microscopy is able to overcome problems encountered with using confocal scanning microscopy. 
E) Fluorescence microscopy presents images in three dimensions. 
A) Fluorescent light is emitted throughout the specimen being viewed. 
B) Fluorescence microscopy is best at viewing rounded, thicker specimens. 
C) Fluorescence microscopy is used to view dead specimens only. 
D) Fluorescence microscopy is able to overcome problems encountered with using confocal scanning microscopy. 
E) Fluorescence microscopy presents images in three dimensions.

Question 6

Because of the low penetration power of electrons,samples for transmission electron microscopy must be extremely thin.A(n)________ is able to cut sections as thin as 20 nm.

Accepted Answer

The answer of Because of the low penetration power of...

Question 7

Which of the following scientists revolutionized biology by demonstrating that living organisms were also governed by the laws of physics and chemistry by synthesizing urea in the laboratory from ammonium cyanate?

Accepted Answer

A) Wöhler 
B) van Leeuwenhook 
C) Mendel 
D) Schwann 
E) Rohrer 
A) Wöhler 
B) van Leeuwenhook 
C) Mendel 
D) Schwann 
E) Rohrer

Question 8

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

Accepted Answer

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

Question 9

Match the type of microscopy with the appropriate characteristic.

-Confocal

Accepted Answer

A) uses a laser to view a single plane of a specimen 
B) detects electrons passing through a specimen 
C) light passes directly through specimen 
D) detects electrons deflected from the surface of the specimen 
E) shows specific molecules
F)amplifies variations in density 
A) uses a laser to view a single plane of a specimen 
B) detects electrons passing through a specimen 
C) light passes directly through specimen 
D) detects electrons deflected from the surface of the specimen 
E) shows specific molecules
F)amplifies variations in density

Question 10

The steps of the scientific method,in the correct order,are:

Accepted Answer

A) design experiments, draw conclusions, collect data, interpret results, make observations, and test the hypothesis. 
B) make observations, formulate the hypothesis, design experiments, collect data, interpret results, and draw conclusions. 
C) collect data, interpret results, test the hypothesis, design experiments, make observations, and draw conclusions. 
D) collect data, interpret results, test the hypothesis, make observations, and design experiments. 
E) none of the above 
A) design experiments, draw conclusions, collect data, interpret results, make observations, and test the hypothesis. 
B) make observations, formulate the hypothesis, design experiments, collect data, interpret results, and draw conclusions. 
C) collect data, interpret results, test the hypothesis, design experiments, make observations, and draw conclusions. 
D) collect data, interpret results, test the hypothesis, make observations, and design experiments. 
E) none of the above

Question 11

Melvin Calvin used ________,a specific ________,to deduce the Calvin-Benson cycle of photosynthesis.

Accepted Answer

The answer of Melvin Calvin used ________,a specific ________,to deduce...

Question 12

Which type of microscopy enhances and amplifies slight changes in the phase of transmitted light?

Accepted Answer

A) differential interference contrast microscopy 
B) digital video microscopy 
C) fluorescence microscopy 
D) phase-contrast microscopy 
E) both choices A and D 
A) differential interference contrast microscopy 
B) digital video microscopy 
C) fluorescence microscopy 
D) phase-contrast microscopy 
E) both choices A and D

Question 13

Match between columns
                        Premises: Louis Pasteur
Gregor Mendel
Thomas Hunt Morgan
George Beadle and Edward Tatum
James Watson and Francis Crick
Friedrich Wöhler
Walter Sutton
Matthias Schleiden
Oswald Avery,Colin MacLeod,and Maclyn McCarty

Accepted Answer

The Answer of oral bacteria and "one gene-one enzyme" and is...

Question 14

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

Accepted Answer

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

Question 15

Which type of microscopy has the greatest resolving power?

Accepted Answer

A) electron 
B) phase-contrast 
C) fluorescence 
D) digital video 
E) confocal scanning 
A) electron 
B) phase-contrast 
C) fluorescence 
D) digital video 
E) confocal scanning

Question 16

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

Accepted Answer

The answer of In 1880,Walther Flemming identified ________,threadlike bodies seen...

Question 17

Match the type of microscopy with the appropriate characteristic.

-Scanning electron microscopy

Accepted Answer

A) uses a laser to view a single plane of a specimen 
B) detects electrons passing through a specimen 
C) light passes directly through specimen 
D) detects electrons deflected from the surface of the specimen 
E) shows specific molecules
F)amplifies variations in density 
A) uses a laser to view a single plane of a specimen 
B) detects electrons passing through a specimen 
C) light passes directly through specimen 
D) detects electrons deflected from the surface of the specimen 
E) shows specific molecules
F)amplifies variations in density

Question 18

A number of different types of microscopy exist.Each type of microscopy has advantages and disadvantages.Can you identify the microscope that would be most advantageous for the situation below?
a.A cell biologist wishes to visualize the ribosomes of a cell.
b.A bacteriologist wishes to examine the motility of a bacterium.
c.An immunologist wishes to determine if a lymphocyte possesses a certain surface protein.
d.A virologist is trying to determine the three-dimensional shape of a virus.
e.A pathologist is trying to examine the cytoplasm of a cell for changes that result from viral infection.

Accepted Answer

(Answers may vary.)
a.Electron microscop

Question 19

Which scientist is credited with coining the term cell from the Latin cellulae?

Accepted Answer

A) Robert Brown 
B) Antonie van Leeuwenhoek 
C) Theodor Schwann 
D) Matthias Schleiden 
E) Robert Hooke 
A) Robert Brown 
B) Antonie van Leeuwenhoek 
C) Theodor Schwann 
D) Matthias Schleiden 
E) Robert Hooke

Question 20

You have been a sample of Mimivirus,which has the largest capsid diameter of all currently known viruses (600 nm)and is hexagon shaped (icosahedral).Based on your knowledge of microscopes,what would you be able to see/determine about mimiviral structure using each of the following microscopes?
a.simple compound (light)microscope
b.fluorescent microscope using fluorescently labeled antibodies to a novel capsid protein
c.magnetic resonance force microscope

Accepted Answer

a.Light microscope: will be able to see

Exam 1: A Preview of the Cell

Gregor Mendel was most influential in which field of biology?

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

All of the following are model organisms,except

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

Which of the following is true of fluorescence microscopy?

Because of the low penetration power of electrons,samples for transmission electron microscopy must be extremely thin.A(n)________ is able to cut sections as thin as 20 nm.

Which of the following scientists revolutionized biology by demonstrating that living organisms were also governed by the laws of physics and chemistry by synthesizing urea in the laboratory from ammonium cyanate?

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

Match the type of microscopy with the appropriate characteristic. -Confocal

The steps of the scientific method,in the correct order,are:

Melvin Calvin used ________,a specific ________,to deduce the Calvin-Benson cycle of photosynthesis.

Which type of microscopy enhances and amplifies slight changes in the phase of transmitted light?

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

Which type of microscopy has the greatest resolving power?

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

Match the type of microscopy with the appropriate characteristic. -Scanning electron microscopy

Which scientist is credited with coining the term cell from the Latin cellulae?

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: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, 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: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

Filters

Melvin Calvin used ,a specific ,to deduce the Calvin-Benson cycle of photosynthesis.