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BECKER'S WORLD OF THE CELL, 10TH EDITION EXAM
QUESTIONS LATEST VERSION QUESTIONS AND ANSWERS
2026 EDITION
BECKER'S WORLD OF THE CELL, 10TH EDITION
TEST BANK EXAMINATION
250 Multiple Choice Questions with Rationales
SECTION 1: A PREVIEW OF CELL BIOLOGY (Questions 1-25)
1. The cell theory states that:
A) All organisms consist of one or more cells, cells arise from preexisting cells, and the
cell is the basic unit of structure for all organisms
B) All cells have a membrane-bound nucleus
C) All cells arise spontaneously from nonliving matter
D) Cells are the smallest units of matter
E) All cells are identical in structure and function
Rationale: The cell theory has three core tenets: (1) all organisms consist of one or
more cells, (2) all cells arise from preexisting cells, and (3) the cell is the basic unit of
structure and organization in organisms . Not all cells have a membrane-bound nucleus
(prokaryotes lack one), and cells do not arise spontaneously. Cells vary widely in
structure and function, and they are not the smallest units of matter—atoms and
molecules are smaller.
2. The scientist who is credited with first describing cells using a primitive
microscope was:
A) Louis Pasteur
B) Charles Darwin
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C) Gregor Mendel
D) Robert Hooke
E) Antonie van Leeuwenhoek
Rationale: Robert Hooke first described cells in 1665 when he examined cork slices
and coined the term "cells" based on the room-like structures he observed. Van
Leeuwenhoek also made significant contributions but is more famous for observing
living microorganisms. Pasteur, Darwin, and Mendel made contributions to other areas
of biology .
3. The limit of resolution can best be defined as:
A) The distance that an object must be moved to be distinguished from its background
B) The inverse of the wavelength of light; it is greatest for black light
C) The minimum distance two objects must be apart to be distinguished as separate
objects
D) The magnification power of a microscope
E) The ability to enlarge an image
Rationale: The limit of resolution (resolving power) is the minimum distance that two
objects must be separated by in order to be distinguished as distinct structures . This is
the fundamental limitation of any microscope. Magnification (enlargement) is different
from resolution, and resolution is not determined by the inverse of wavelength .
4. Which type of microscopy has the greatest resolving power?
A) Light microscopy
B) Phase-contrast microscopy
C) Fluorescence microscopy
D) Confocal microscopy
E) Electron microscopy
Rationale: Electron microscopy has the greatest resolving power, capable of resolving
structures down to approximately 0.2 nm, compared to about 200 nm for light
microscopy . This is because electrons have much shorter wavelengths than visible
light, allowing electron microscopes to distinguish much smaller structures like DNA
molecules .
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5. Which of the following can only be viewed by electron microscopy?
A) Frog eggs
B) DNA
C) Nuclei
D) Mitochondria
E) Prokaryotic cells
Rationale: DNA molecules are too small to be resolved by light microscopy and can
only be visualized using electron microscopy . Frog eggs, nuclei, mitochondria, and
prokaryotic cells can all be seen with light microscopy due to their larger dimensions
(frog eggs are macroscopic, while nuclei, mitochondria, and prokaryotic cells are within
the resolution limit of light microscopes) .
6. The genome of an organism is defined as:
A) The set of physical and functional subunits of a cell
B) The complete set of chromosomes within a cell
C) The complete set of DNA, including its genes
D) The total number of genes present on a chromosome
E) The complete set of RNA molecules transcribed
Rationale: The genome is defined as the complete set of DNA, including all of its
genes . This encompasses the entire genetic material of an organism. The complete set
of chromosomes is a way to conceptualize the genome, but the most precise definition
is the entire DNA sequence. The genome includes all genes, regulatory sequences, and
noncoding DNA .
7. Which of the following is true regarding genes?
A) Genes are functional units that code for a polypeptide or functional RNA
B) Genes are segments of protein that produce a functional product
C) Genes are comprised of both DNA and protein
D) Genes are segments of chromosomal RNA that code for proteins
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E) Genes are the entire haploid set of DNA
Rationale: Genes are functional units that code for a polypeptide (protein) or a
functional RNA molecule . They are segments of DNA, not protein, and they are not
composed of protein. The entire haploid set of DNA is the genome, not an individual
gene. Some genes code for functional RNA molecules, not proteins .
8. Which of the following scientists is known for his work with pedigrees and
understanding inheritance?
A) Francis Crick
B) Charles Darwin
C) James Watson
D) Gregor Mendel
E) Louis Pasteur
Rationale: Gregor Mendel is known for his work with pea plants that established the
fundamental laws of inheritance, and his work was later extended to pedigree analysis .
Crick and Watson determined the structure of DNA. Darwin proposed evolution by
natural selection. Pasteur disproved spontaneous generation and developed vaccines.
Mendel's work with pedigrees laid the foundation for genetics .
9. The particular fields of biology that joined to form cell biology were:
A) Biochemistry and genetics
B) Genetics and cytology
C) Cytology and biochemistry
D) Genetics, cytology, and biochemistry
E) Biochemistry, embryology, and genetics
Rationale: Cell biology emerged as a distinct field through the integration of three major
disciplines: cytology (the study of cells), biochemistry (the study of chemical
processes), and genetics (the study of heredity) . This synthesis allowed scientists to
understand cellular structures, their chemical functions, and how genetic information
directs those functions .
10. Which of the following is an application of immunofluorescence microscopy?
BECKER'S WORLD OF THE CELL, 10TH EDITION EXAM
QUESTIONS LATEST VERSION QUESTIONS AND ANSWERS
2026 EDITION
BECKER'S WORLD OF THE CELL, 10TH EDITION
TEST BANK EXAMINATION
250 Multiple Choice Questions with Rationales
SECTION 1: A PREVIEW OF CELL BIOLOGY (Questions 1-25)
1. The cell theory states that:
A) All organisms consist of one or more cells, cells arise from preexisting cells, and the
cell is the basic unit of structure for all organisms
B) All cells have a membrane-bound nucleus
C) All cells arise spontaneously from nonliving matter
D) Cells are the smallest units of matter
E) All cells are identical in structure and function
Rationale: The cell theory has three core tenets: (1) all organisms consist of one or
more cells, (2) all cells arise from preexisting cells, and (3) the cell is the basic unit of
structure and organization in organisms . Not all cells have a membrane-bound nucleus
(prokaryotes lack one), and cells do not arise spontaneously. Cells vary widely in
structure and function, and they are not the smallest units of matter—atoms and
molecules are smaller.
2. The scientist who is credited with first describing cells using a primitive
microscope was:
A) Louis Pasteur
B) Charles Darwin
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C) Gregor Mendel
D) Robert Hooke
E) Antonie van Leeuwenhoek
Rationale: Robert Hooke first described cells in 1665 when he examined cork slices
and coined the term "cells" based on the room-like structures he observed. Van
Leeuwenhoek also made significant contributions but is more famous for observing
living microorganisms. Pasteur, Darwin, and Mendel made contributions to other areas
of biology .
3. The limit of resolution can best be defined as:
A) The distance that an object must be moved to be distinguished from its background
B) The inverse of the wavelength of light; it is greatest for black light
C) The minimum distance two objects must be apart to be distinguished as separate
objects
D) The magnification power of a microscope
E) The ability to enlarge an image
Rationale: The limit of resolution (resolving power) is the minimum distance that two
objects must be separated by in order to be distinguished as distinct structures . This is
the fundamental limitation of any microscope. Magnification (enlargement) is different
from resolution, and resolution is not determined by the inverse of wavelength .
4. Which type of microscopy has the greatest resolving power?
A) Light microscopy
B) Phase-contrast microscopy
C) Fluorescence microscopy
D) Confocal microscopy
E) Electron microscopy
Rationale: Electron microscopy has the greatest resolving power, capable of resolving
structures down to approximately 0.2 nm, compared to about 200 nm for light
microscopy . This is because electrons have much shorter wavelengths than visible
light, allowing electron microscopes to distinguish much smaller structures like DNA
molecules .
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5. Which of the following can only be viewed by electron microscopy?
A) Frog eggs
B) DNA
C) Nuclei
D) Mitochondria
E) Prokaryotic cells
Rationale: DNA molecules are too small to be resolved by light microscopy and can
only be visualized using electron microscopy . Frog eggs, nuclei, mitochondria, and
prokaryotic cells can all be seen with light microscopy due to their larger dimensions
(frog eggs are macroscopic, while nuclei, mitochondria, and prokaryotic cells are within
the resolution limit of light microscopes) .
6. The genome of an organism is defined as:
A) The set of physical and functional subunits of a cell
B) The complete set of chromosomes within a cell
C) The complete set of DNA, including its genes
D) The total number of genes present on a chromosome
E) The complete set of RNA molecules transcribed
Rationale: The genome is defined as the complete set of DNA, including all of its
genes . This encompasses the entire genetic material of an organism. The complete set
of chromosomes is a way to conceptualize the genome, but the most precise definition
is the entire DNA sequence. The genome includes all genes, regulatory sequences, and
noncoding DNA .
7. Which of the following is true regarding genes?
A) Genes are functional units that code for a polypeptide or functional RNA
B) Genes are segments of protein that produce a functional product
C) Genes are comprised of both DNA and protein
D) Genes are segments of chromosomal RNA that code for proteins
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E) Genes are the entire haploid set of DNA
Rationale: Genes are functional units that code for a polypeptide (protein) or a
functional RNA molecule . They are segments of DNA, not protein, and they are not
composed of protein. The entire haploid set of DNA is the genome, not an individual
gene. Some genes code for functional RNA molecules, not proteins .
8. Which of the following scientists is known for his work with pedigrees and
understanding inheritance?
A) Francis Crick
B) Charles Darwin
C) James Watson
D) Gregor Mendel
E) Louis Pasteur
Rationale: Gregor Mendel is known for his work with pea plants that established the
fundamental laws of inheritance, and his work was later extended to pedigree analysis .
Crick and Watson determined the structure of DNA. Darwin proposed evolution by
natural selection. Pasteur disproved spontaneous generation and developed vaccines.
Mendel's work with pedigrees laid the foundation for genetics .
9. The particular fields of biology that joined to form cell biology were:
A) Biochemistry and genetics
B) Genetics and cytology
C) Cytology and biochemistry
D) Genetics, cytology, and biochemistry
E) Biochemistry, embryology, and genetics
Rationale: Cell biology emerged as a distinct field through the integration of three major
disciplines: cytology (the study of cells), biochemistry (the study of chemical
processes), and genetics (the study of heredity) . This synthesis allowed scientists to
understand cellular structures, their chemical functions, and how genetic information
directs those functions .
10. Which of the following is an application of immunofluorescence microscopy?
