Question 1

Which of the following is a correct statement concerning the comparison of prokaryotic and eukaryotic cells?

Accepted Answer

A)  Mitosis is common to both groups 
B)  Flagella and cilia of both groups are identical with a "9 + 2" microtubular pattern 
C)  The DNA nucleoid of a prokaryote is not membrane bound; the nucleus of a eukaryote is membrane bound 
D)  All of the choices are correct 
A)  Mitosis is common to both groups 
B)  Flagella and cilia of both groups are identical with a "9 + 2" microtubular pattern 
C)  The DNA nucleoid of a prokaryote is not membrane bound; the nucleus of a eukaryote is membrane bound 
D)  All of the choices are correct C

Question 2

If a fish is placed in an isotonic solution,which will occur?

Accepted Answer

A)  Salts will move into the fish from the surrounding solution 
B)  Water will move into the fish from the surrounding solution 
C)  Salts will move out of the fish into the surrounding solution 
D)  Water will move out of the fish into the surrounding solution 
E)  None of the choices will occur 
A)  Salts will move into the fish from the surrounding solution 
B)  Water will move into the fish from the surrounding solution 
C)  Salts will move out of the fish into the surrounding solution 
D)  Water will move out of the fish into the surrounding solution 
E)  None of the choices will occur E

Question 3

If there is life on other planets,would it necessarily resemble life that has evolved on Earth? Why or why not?

Accepted Answer

The possibility of life on other planets is a topic of great interest and speculation in the scientific community. Whether or not this life would resemble life that has evolved on Earth is a complex and debated question.

On one hand, the conditions necessary for life as we know it to exist are based on the fundamental building blocks of carbon, water, and energy. These are the same elements that have allowed life to evolve on Earth, so it is possible that similar conditions on other planets could lead to the development of life forms that share some similarities with those on Earth.

On the other hand, the vast diversity of life on Earth and the different environments in which it thrives suggest that life can take many forms. It is also possible that life on other planets could have evolved under entirely different conditions, leading to organisms that are radically different from anything we have encountered on Earth.

Ultimately, the question of whether life on other planets would resemble life on Earth is still unanswered. Until we have concrete evidence of extraterrestrial life, we can only speculate based on our understanding of the conditions necessary for life to exist. Regardless of the outcome, the discovery of life beyond Earth would undoubtedly revolutionize our understanding of biology and the universe.

Question 4

An important technique that allows biologists to trace the fate of chemicals in metabolic pathways is the use

Accepted Answer

A)  of the immunofluorescence microscope. 
B)  of radioactive isotopes. 
C)  of time lapse photography. 
D)  of centrifugation. 
A)  of the immunofluorescence microscope. 
B)  of radioactive isotopes. 
C)  of time lapse photography. 
D)  of centrifugation.

Question 5

The best definition of diffusion is

Accepted Answer

A)  movement of molecules from higher concentration to lower concentration. 
B)  movement of water across a semi-permeable membrane from high water concentration to lower water concentration. 
C)  movement of molecules from lower concentration to higher concentration. 
D)  movement of a substance against its concentration through the release of energy from ATP. 
A)  movement of molecules from higher concentration to lower concentration. 
B)  movement of water across a semi-permeable membrane from high water concentration to lower water concentration. 
C)  movement of molecules from lower concentration to higher concentration. 
D)  movement of a substance against its concentration through the release of energy from ATP.

Question 6

Cancer occurs in somatic (or body)cells.Explain how the process of mitosis might be railroaded into producing cancerous cells.

Accepted Answer

Cancer occurs in somatic (or body) cells

Question 7

Distinguish between a nucleus and a nucleoid,identifying where each is found and what each contains,and why it is important to distinguish between the two.

Accepted Answer

The nucleus and nucleoid are both import

Question 8

Major functions of the plasma membrane do NOT include

Accepted Answer

A)  regulating molecules and ions that pass into and out of the cell. 
B)  recognizing and communicating between different cells and tissues. 
C)  maintaining connections between adjacent cells. 
D)  producing proteins used in construction of the cell. 
A)  regulating molecules and ions that pass into and out of the cell. 
B)  recognizing and communicating between different cells and tissues. 
C)  maintaining connections between adjacent cells. 
D)  producing proteins used in construction of the cell.

Question 9

Dermal stem cells divide,with some cells continuing the stem cell line and others being pushed toward the surface to flatten and die and be sloughed off.In the bone marrow,other stem cells produce cells such as the red blood cells that lose their nucleus and function for a short time before they too die.These cells that reproduce no further

Accepted Answer

A)  leave the cell cycle in a G0 phase, which immediately follows telophase. 
B)  leave the cell cycle in a G3 phase, which immediately follows G2. 
C)  halt in the midst of the S phase. 
D)  continually cycle but simply fail to go through cytokinesis. 
A)  leave the cell cycle in a G0 phase, which immediately follows telophase. 
B)  leave the cell cycle in a G3 phase, which immediately follows G2. 
C)  halt in the midst of the S phase. 
D)  continually cycle but simply fail to go through cytokinesis.

Question 10

Which does NOT occur in telophase?

Accepted Answer

A)  Cytokinesis is underway 
B)  Nuclear envelope is reconstructed 
C)  Centromeres split apart 
D)  Chromosomes decondense into chromatin 
A)  Cytokinesis is underway 
B)  Nuclear envelope is reconstructed 
C)  Centromeres split apart 
D)  Chromosomes decondense into chromatin

Question 11

Which of the following is a correct statement comparing prokaryotic and eukaryotic cells?

Accepted Answer

A)  Both must provide for transfer of genetic information 
B)  Both must have some individuals that reproduce 
C)  Both must separate their interior world from the external world 
D)  All of the choices are correct 
A)  Both must provide for transfer of genetic information 
B)  Both must have some individuals that reproduce 
C)  Both must separate their interior world from the external world 
D)  All of the choices are correct

Question 12

The sodium-potassium pump moves sodium and potassium ions across the plasma membrane by

Accepted Answer

A)  facilitated transport. 
B)  active transport. 
C)  cotransport. 
D)  endocytosis. 
A)  facilitated transport. 
B)  active transport. 
C)  cotransport. 
D)  endocytosis.

Question 13

Movement is not only a feature of animal cells but of all eukaryotic cells.Which of the following are involved in a cell's ability to move?

Accepted Answer

A)  Microtubules 
B)  Microfilaments 
C)  Actin and myosin 
D)  All of the choices are correct 
A)  Microtubules 
B)  Microfilaments 
C)  Actin and myosin 
D)  All of the choices are correct

Question 14

If the nucleus divides many times without cytokinesis occurring,the result is

Accepted Answer

A)  cell death. 
B)  interphase. 
C)  a multinucleate cell. 
D)  an incomplete spindle. 
A)  cell death. 
B)  interphase. 
C)  a multinucleate cell. 
D)  an incomplete spindle.

Question 15

The Dutch microscopist who sent letters to the Royal Society of London describing his many detailed observations of life,including units later known to be cells,was

Accepted Answer

A)  Anton van Leeuwenhoek. 
B)  Robert Hooke. 
C)  Matthais Schleiden. 
D)  J. Purkinje. 
A)  Anton van Leeuwenhoek. 
B)  Robert Hooke. 
C)  Matthais Schleiden. 
D)  J. Purkinje.

Question 16

Cell products such as undigested residues are removed from the cell through

Accepted Answer

A)  facilitated transport. 
B)  cotransport. 
C)  endocytosis. 
D)  exocytosis. 
A)  facilitated transport. 
B)  cotransport. 
C)  endocytosis. 
D)  exocytosis.

Question 17

Which correctly describes ribosomes?

Accepted Answer

A)  Ribosomes contain both DNA and protein 
B)  Ribosomes are active in carbohydrate synthesis 
C)  Ribosomal subunits leave the nucleolus and form ribosomes in the cytoplasm 
D)  Ribosomes are found associated with the endoplasmic reticulum in prokaryotic cells 
A)  Ribosomes contain both DNA and protein 
B)  Ribosomes are active in carbohydrate synthesis 
C)  Ribosomal subunits leave the nucleolus and form ribosomes in the cytoplasm 
D)  Ribosomes are found associated with the endoplasmic reticulum in prokaryotic cells

Question 18

In a phospholipid bilayer,the

Accepted Answer

A)  Cholesterol is on the outside and plays a critical role in maintaining the fluidity of the membrane 
B)  Glycoproteins are on the inside providing a supporting site for adhesive functions 
C)  Glycoproteins are anchored in the plasma membrane to assist in their transport functions 
D)  Water-soluble ends are oriented toward the exterior and interior of the cell, whereas the fat-soluble fatty acids are oriented toward the inside of the membrane 
A)  Cholesterol is on the outside and plays a critical role in maintaining the fluidity of the membrane 
B)  Glycoproteins are on the inside providing a supporting site for adhesive functions 
C)  Glycoproteins are anchored in the plasma membrane to assist in their transport functions 
D)  Water-soluble ends are oriented toward the exterior and interior of the cell, whereas the fat-soluble fatty acids are oriented toward the inside of the membrane

Question 19

At the completion of mitosis,

Accepted Answer

A)  each chromosome is composed of a single chromatid once more. 
B)  the daughter cell nuclei have acquired the same number and kinds of chromosomes as the parent cell nucleus. 
C)  the cell may not have yet undergone cytokinesis. 
D)  All of the above are correct. 
A)  each chromosome is composed of a single chromatid once more. 
B)  the daughter cell nuclei have acquired the same number and kinds of chromosomes as the parent cell nucleus. 
C)  the cell may not have yet undergone cytokinesis. 
D)  All of the above are correct.

Question 20

In most animal cells,the majority of the cell cycle is spent in

Accepted Answer

A)  metaphase. 
B)  anaphase. 
C)  interphase. 
D)  prophase. 
A)  metaphase. 
B)  anaphase. 
C)  interphase. 
D)  prophase.

Exam 3: Cells As Units of Life

Which of the following is a correct statement concerning the comparison of prokaryotic and eukaryotic cells?

If a fish is placed in an isotonic solution,which will occur?

If there is life on other planets,would it necessarily resemble life that has evolved on Earth? Why or why not?

An important technique that allows biologists to trace the fate of chemicals in metabolic pathways is the use

The best definition of diffusion is

Cancer occurs in somatic (or body)cells.Explain how the process of mitosis might be railroaded into producing cancerous cells.

Distinguish between a nucleus and a nucleoid,identifying where each is found and what each contains,and why it is important to distinguish between the two.

Major functions of the plasma membrane do NOT include

Which does NOT occur in telophase?

Which of the following is a correct statement comparing prokaryotic and eukaryotic cells?

The sodium-potassium pump moves sodium and potassium ions across the plasma membrane by

Movement is not only a feature of animal cells but of all eukaryotic cells.Which of the following are involved in a cell's ability to move?

If the nucleus divides many times without cytokinesis occurring,the result is

The Dutch microscopist who sent letters to the Royal Society of London describing his many detailed observations of life,including units later known to be cells,was

Cell products such as undigested residues are removed from the cell through

Which correctly describes ribosomes?

In a phospholipid bilayer,the

At the completion of mitosis,

In most animal cells,the majority of the cell cycle is spent in

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectural Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Radiate Animals

Acoelomorpha,Platyzoa,and Mesozoa

Polyzoa and Kryptrochozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Support, Protection, and Movement

Chaetognaths, Echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distributions

Animal Ecology

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