Question 1

Movement of a molecule against a concentration gradient is

Accepted Answer

A)  simple diffusion. 
B)  facilitated diffusion. 
C)  osmosis. 
D)  active transport. 
E)  passive transport. 
A)  simple diffusion. 
B)  facilitated diffusion. 
C)  osmosis. 
D)  active transport. 
E)  passive transport.

Question 2

The symptoms of Luft's Syndrome include

Accepted Answer

A)  extremely high cellular oxygen consumption rate. 
B)  lack of sweating. 
C)  diminished appetite. 
D)  extremely low basal metabolic rate. 
E)  lack of mitochondria. 
A)  extremely high cellular oxygen consumption rate. 
B)  lack of sweating. 
C)  diminished appetite. 
D)  extremely low basal metabolic rate. 
E)  lack of mitochondria.

Question 3

The word eukaryotic means

Accepted Answer

A)  having no nucleus. 
B)  having two nuclei. 
C)  before the nucleus. 
D)  having a true nucleus. 
E)  having many nuclei. 
A)  having no nucleus. 
B)  having two nuclei. 
C)  before the nucleus. 
D)  having a true nucleus. 
E)  having many nuclei.

Question 4

Enzymes do not

Accepted Answer

A)  control the speed of a reaction. 
B)  change shapes to facilitate certain reactions. 
C)  act on substrates. 
D)  may require cofactors. 
E)  react with an active site. 
A)  control the speed of a reaction. 
B)  change shapes to facilitate certain reactions. 
C)  act on substrates. 
D)  may require cofactors. 
E)  react with an active site.

Question 5

Pyruvate is the end product of

Accepted Answer

A)  glycolysis. 
B)  acetyl-CoA formation. 
C)  fermentation. 
D)  the Krebs cycle. 
E)  electron transport. 
A)  glycolysis. 
B)  acetyl-CoA formation. 
C)  fermentation. 
D)  the Krebs cycle. 
E)  electron transport.

Question 6

The cells least affected by Luft's Syndrome are

Accepted Answer

A)  skeletal muscle cells. 
B)  heart muscle cells. 
C)  brain cells. 
D)  body cells with high energy needs. 
E)  reproductive cells. 
A)  skeletal muscle cells. 
B)  heart muscle cells. 
C)  brain cells. 
D)  body cells with high energy needs. 
E)  reproductive cells.

Question 7

The movement of water through a membrane is dependent on

Accepted Answer

A)  the concentration of solute. 
B)  channel proteins. 
C)  the extent of packing of the phospholipids. 
D)  active transport. 
E)  endocytosis. 
A)  the concentration of solute. 
B)  channel proteins. 
C)  the extent of packing of the phospholipids. 
D)  active transport. 
E)  endocytosis.

Question 8

Enzymes function best in the body at a pH of

Accepted Answer

A)  6.0 - 6.5. 
B)  7.0 - 7.2. 
C)  7.35 - 7.4. 
D)  7.5 - 7.55. 
E)  7.2 - 7.5. 
A)  6.0 - 6.5. 
B)  7.0 - 7.2. 
C)  7.35 - 7.4. 
D)  7.5 - 7.55. 
E)  7.2 - 7.5.

Question 9

When proteins and fats are used as energy sources, their breakdown subunits enter

Accepted Answer

A)  glycolysis. 
B)  electron transport. 
C)  the Krebs cycle. 
D)  chemiosmosis. 
E)  fermentation. 
A)  glycolysis. 
B)  electron transport. 
C)  the Krebs cycle. 
D)  chemiosmosis. 
E)  fermentation.

Question 10

The greatest number of ATP molecules is produced in

Accepted Answer

A)  glycolysis. 
B)  lactate fermentation. 
C)  anaerobic respiration. 
D)  electron transport. 
E)  the Krebs cycle. 
A)  glycolysis. 
B)  lactate fermentation. 
C)  anaerobic respiration. 
D)  electron transport. 
E)  the Krebs cycle.

Question 11

Friedrich's Ataxia is a disease associated with

Accepted Answer

A)  a loss of muscle coordination. 
B)  weak muscles. 
C)  serious heart problems. 
D)  a loss of muscle coordination and weak muscles 
E)  a loss of muscle coordination, weak muscles, and serious heart problems 
A)  a loss of muscle coordination. 
B)  weak muscles. 
C)  serious heart problems. 
D)  a loss of muscle coordination and weak muscles 
E)  a loss of muscle coordination, weak muscles, and serious heart problems

Question 12

How many ATP molecules (net yield) are produced per molecule of glucose degraded during glycolysis?

Accepted Answer

A)  1 
B)  2 
C)  4 
D)  36 
E)  38 
A)  1 
B)  2 
C)  4 
D)  36 
E)  38

Question 13

Liver cells convert ethanol to

Accepted Answer

A)  water. 
B)  carbon dioxide. 
C)  acetic acid. 
D)  ammonia. 
E)  urea. 
A)  water. 
B)  carbon dioxide. 
C)  acetic acid. 
D)  ammonia. 
E)  urea.

Question 14

Match between columns
                        Premises: This process precedes the Krebs cycle.
In this process, two ATP, eight NADH, and carbon dioxide are produced.
This process yields the most energy.
In this process one of the final products is water.
This process involves electron transport (oxidative) phosphorylation.

Accepted Answer

The Answer of glycolysis and electron transport and aerobic respiration is...

Question 15

Enzymes

Accepted Answer

A)  are not specific. 
B)  act as catalysts. 
C)  are inorganic molecules. 
D)  have special shapes that react to their activities. 
E)  are cholesterol derivatives. 
A)  are not specific. 
B)  act as catalysts. 
C)  are inorganic molecules. 
D)  have special shapes that react to their activities. 
E)  are cholesterol derivatives.

Question 16

Match between columns
                        Premises: anabolism
the Krebs cycle
electron transport phosphorylation
acetyl-CoA formation
glycolysis

Accepted Answer

The Answer of produces ATP, NADH, and COS1U1B12S1U1B0 and assembles is...

Question 17

These are the primary structures for sorting and shipping of proteins for export from the cell or insertion into the cell membrane.

Accepted Answer

A)  Golgi bodies 
B)  ribosomes 
C)  mitochondria 
D)  lysosomes 
E)  endoplasmic reticula 
A)  Golgi bodies 
B)  ribosomes 
C)  mitochondria 
D)  lysosomes 
E)  endoplasmic reticula

Question 18

Which of the following is MOST accurate regarding cells?

Accepted Answer

A)  All cells have a nucleus. 
B)  All cells divide by meiosis. 
C)  All living organisms are made up of one or more cells. 
D)  Cells arise through spontaneous generation. 
E)  Growth is solely the result of cell division. 
A)  All cells have a nucleus. 
B)  All cells divide by meiosis. 
C)  All living organisms are made up of one or more cells. 
D)  Cells arise through spontaneous generation. 
E)  Growth is solely the result of cell division.

Question 19

The rate of diffusion through a semipermeable membrane will be lowest when the

Accepted Answer

A)  differences in concentration on either side are the greatest. 
B)  temperature is raised to near boiling. 
C)  differences in concentration on either side are the least. 
D)  actions of active transport override diffusion. 
E)  inside is hypertonic to the outside. 
A)  differences in concentration on either side are the greatest. 
B)  temperature is raised to near boiling. 
C)  differences in concentration on either side are the least. 
D)  actions of active transport override diffusion. 
E)  inside is hypertonic to the outside.

Question 20

Match between columns
                        Premises: DNA synthesis occurs in the nucleus; its breakdown can occur in this organelle.
The cellular digestion and disposal of biological molecules occurs inside these organelles.
This organelle is involved in lipid production and protein transport.
Aerobic respiration occurs in these organelles.
These are the structures upon which proteins are assembled.
The hemoglobin of mammals and birds is synthesized on these tiny, two-part organelles.
The packaging of secretory proteins occurs in association with these structures.
RNA carries out the translation of the genetic code in association with ribosomes on this organelle.
Sugar metabolism occurs in association with this organelle.

Accepted Answer

The Answer of endoplasmic reticulum. and ribosomes. and mitochondria. and is...

Exam 3: Cells and How They Work

Movement of a molecule against a concentration gradient is

The symptoms of Luft's Syndrome include

The word eukaryotic means

Enzymes do not

Pyruvate is the end product of

The cells least affected by Luft's Syndrome are

The movement of water through a membrane is dependent on

Enzymes function best in the body at a pH of

When proteins and fats are used as energy sources, their breakdown subunits enter

The greatest number of ATP molecules is produced in

Friedrich's Ataxia is a disease associated with

How many ATP molecules (net yield) are produced per molecule of glucose degraded during glycolysis?

Liver cells convert ethanol to

Enzymes

These are the primary structures for sorting and shipping of proteins for export from the cell or insertion into the cell membrane.

Which of the following is MOST accurate regarding cells?

The rate of diffusion through a semipermeable membrane will be lowest when the

Learning About Human Biology

Chemistry of Life

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

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