Question 1

What cellular organelle is especially abundant in phagocytic white blood cells?

Accepted Answer

A)  nuclei 
B)  nucleoli 
C)  Golgi apparati 
D)  lysosomes 
E)  ribosomes 
A)  nuclei 
B)  nucleoli 
C)  Golgi apparati 
D)  lysosomes 
E)  ribosomes

Question 2

What are the folds in mitochondrial membranes called?

Accepted Answer

A)  matrix 
B)  cristae 
C)  rugae 
D)  lumen 
E)  villi 
A)  matrix 
B)  cristae 
C)  rugae 
D)  lumen 
E)  villi

Question 3

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?

Accepted Answer

A)  diffusion 
B)  facilitated transport 
C)  active transport 
D)  osmosis 
E)  crenation 
A)  diffusion 
B)  facilitated transport 
C)  active transport 
D)  osmosis 
E)  crenation

Question 4

The light microscope has a resolving power of

Accepted Answer

A)  0.1 mm. 
B)  0.01 mm. 
C)  0.0001 mm. 
D)  0.000001 mm. 
E)  0.00000001 mm. 
A)  0.1 mm. 
B)  0.01 mm. 
C)  0.0001 mm. 
D)  0.000001 mm. 
E)  0.00000001 mm.

Question 5

What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?

Accepted Answer

A)  nucleus 
B)  nucleolus 
C)  nuclear envelope 
D)  nucleoplasm 
E)  endoplasmic reticulum 
A)  nucleus 
B)  nucleolus 
C)  nuclear envelope 
D)  nucleoplasm 
E)  endoplasmic reticulum

Question 6

All of the following are possible origins of cell organelles in eukaryotes EXCEPT

Accepted Answer

A)  invagination of the plasma membrane to form endoplasmic reticulum. 
B)  incorporation of engulfed heterotrophic bacteria to form mitochondria. 
C)  incorporation of engulfed autotrophic cyanobacteria to form chloroplasts. 
D)  a symbiotic relationship between a host cell and a prokaryote that was taken up but not destroyed. 
E)  groups of prokaryotic cells begin to live in a small group sharing products of metabolism. 
A)  invagination of the plasma membrane to form endoplasmic reticulum. 
B)  incorporation of engulfed heterotrophic bacteria to form mitochondria. 
C)  incorporation of engulfed autotrophic cyanobacteria to form chloroplasts. 
D)  a symbiotic relationship between a host cell and a prokaryote that was taken up but not destroyed. 
E)  groups of prokaryotic cells begin to live in a small group sharing products of metabolism.

Question 7

The nucleus of a cell in your thigh muscle contains the same genes as the nucleus of a cell in your brain.

Accepted Answer

A) True 
 B)False

Question 8

In the sodium potassium pump,sodium and potassium are both pumped out of the cell via active transport.

Accepted Answer

A) True 
 B)False

Question 9

The reason that metabolizing cells are small in size is because

Accepted Answer

A)  cells influence nearby cells to divide. 
B)  the surface area of a cell must be able to accomplish nutrient/waste exchange. 
C)  cells need to dissipate heat effectively. 
D)  mitosis occurs before cells reach a certain size. 
E)  cells need to communicate with adjacent cells. 
A)  cells influence nearby cells to divide. 
B)  the surface area of a cell must be able to accomplish nutrient/waste exchange. 
C)  cells need to dissipate heat effectively. 
D)  mitosis occurs before cells reach a certain size. 
E)  cells need to communicate with adjacent cells.

Question 10

Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old.These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity.What domain do these prokaryotes belong to?

Accepted Answer

A)  Protists 
B)  Protoctista 
C)  Archaea 
D)  Archetista 
E)  Eukarya 
A)  Protists 
B)  Protoctista 
C)  Archaea 
D)  Archetista 
E)  Eukarya

Question 11

Whose work proved conclusively that spontaneous generation of life from nonlife was not possible?

Accepted Answer

A)  Louis Pasteur 
B)  Charles Darwin 
C)  John Ray 
D)  Walther Flemming 
E)  Georges Cuvier 
A)  Louis Pasteur 
B)  Charles Darwin 
C)  John Ray 
D)  Walther Flemming 
E)  Georges Cuvier

Question 12

Angela would like to look at living algae from pond water.What type of microscope should she use?

Accepted Answer

A)  compound light microscope 
B)  transmission electron microscope 
C)  scanning electron microscope 
A)  compound light microscope 
B)  transmission electron microscope 
C)  scanning electron microscope

Question 13

Centrosomes are associated with

Accepted Answer

A)  ribosomes. 
B)  mitochondria. 
C)  chromosomes. 
D)  microtubules. 
E)  lysosomes. 
A)  ribosomes. 
B)  mitochondria. 
C)  chromosomes. 
D)  microtubules. 
E)  lysosomes.

Question 14

In the fluid-mosaic model of the plasma membrane,the phospholipid molecules are oriented so that the _____________ heads are facing the outside environment and the ________________ tails are facing the interior of the membrane.

Accepted Answer

A)  hydrophobic, hydrophilic 
B)  hydrophilic, hydrophobic 
C)  autotrophic, heterotrophic 
D)  heterotrophic, autotrophic 
E)  ectothermic, endothermic 
A)  hydrophobic, hydrophilic 
B)  hydrophilic, hydrophobic 
C)  autotrophic, heterotrophic 
D)  heterotrophic, autotrophic 
E)  ectothermic, endothermic

Question 15

Viruses are not made up of cells.According to cell theory,this means what?

Accepted Answer

A)  Viruses can cause disease. 
B)  Cells come only from pre-existing cells. 
C)  Cells can be infected by viruses. 
D)  Viruses are not living. 
E)  Cells and viruses are the same thing. 
A)  Viruses can cause disease. 
B)  Cells come only from pre-existing cells. 
C)  Cells can be infected by viruses. 
D)  Viruses are not living. 
E)  Cells and viruses are the same thing.

Question 16

Why is glycolysis believed to have evolved early in the history of life?

Accepted Answer

A)  It breaks down sugar. 
B)  It produces energy. 
C)  It is present in most every type of cell. 
D)  It does not require oxygen. 
E)  It splits a 6-carbon molecule into two 3-carbon molecules. 
A)  It breaks down sugar. 
B)  It produces energy. 
C)  It is present in most every type of cell. 
D)  It does not require oxygen. 
E)  It splits a 6-carbon molecule into two 3-carbon molecules.

Question 17

In a metabolic pathway,substrate Z is broken down to form product Y and X.Y is further broken down into products V and W.How many enzymes are required for this metabolic pathway?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  five 
A)  one 
B)  two 
C)  three 
D)  four 
E)  five

Question 18

The sum of all of the chemical reactions that occur in a cell collectively are called

Accepted Answer

A)  respiration. 
B)  anabolism. 
C)  photosynthesis. 
D)  metabolism. 
E)  reaction summary. 
A)  respiration. 
B)  anabolism. 
C)  photosynthesis. 
D)  metabolism. 
E)  reaction summary.

Question 19

Often when a person is admitted to the hospital,an intravenous solution of normal saline is begun.Since this does not harm the patient,what is the tonicity of normal saline compared to your blood?

Accepted Answer

A)  hypertonic 
B)  isotonic 
C)  hypotonic 
A)  hypertonic 
B)  isotonic 
C)  hypotonic

Question 20

How large is a nuclear pore in the nuclear envelope?

Accepted Answer

A)  larger than a ribosome 
B)  larger than the Golgi apparatus 
C)  larger than the endoplasmic reticulum 
D)  smaller than a ribosome 
E)  smaller than a protein 
A)  larger than a ribosome 
B)  larger than the Golgi apparatus 
C)  larger than the endoplasmic reticulum 
D)  smaller than a ribosome 
E)  smaller than a protein

Exam 3: Cell Structure and Function

What cellular organelle is especially abundant in phagocytic white blood cells?

What are the folds in mitochondrial membranes called?

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?

The light microscope has a resolving power of

What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?

All of the following are possible origins of cell organelles in eukaryotes EXCEPT

The nucleus of a cell in your thigh muscle contains the same genes as the nucleus of a cell in your brain.

In the sodium potassium pump,sodium and potassium are both pumped out of the cell via active transport.

The reason that metabolizing cells are small in size is because

Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old.These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity.What domain do these prokaryotes belong to?

Whose work proved conclusively that spontaneous generation of life from nonlife was not possible?

Angela would like to look at living algae from pond water.What type of microscope should she use?

Centrosomes are associated with

In the fluid-mosaic model of the plasma membrane,the phospholipid molecules are oriented so that the _____________ heads are facing the outside environment and the ________________ tails are facing the interior of the membrane.

Viruses are not made up of cells.According to cell theory,this means what?

Why is glycolysis believed to have evolved early in the history of life?

In a metabolic pathway,substrate Z is broken down to form product Y and X.Y is further broken down into products V and W.How many enzymes are required for this metabolic pathway?

The sum of all of the chemical reactions that occur in a cell collectively are called

Often when a person is admitted to the hospital,an intravenous solution of normal saline is begun.Since this does not harm the patient,what is the tonicity of normal saline compared to your blood?

How large is a nuclear pore in the nuclear envelope?

Exploring Life and Science

Chemistry of Life

Organization and Regulation of Body Systems

Cardiovascular System: Heart and Blood Vessels

Cardiovascular System: Blood

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System and Excretion

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Reproductive System

Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

DNA Biology and Technology

Human Evolution

Global Ecology and Human Interferences

Human Population, planetary Resources, and Conservation

Infectious Diseases Supplement

Filters

In the fluid-mosaic model of the plasma membrane,the phospholipid molecules are oriented so that the _ heads are facing the outside environment and the ____ tails are facing the interior of the membrane.