Question 1

Which of the following is an example of osmosis?

Accepted Answer

A)  Glucose is transported from our blood stream across cell membranes and into the cytoplasm. 
B)  Sodium is pumped across a cell to increase its concentration on one side of the cell membrane. 
C)  Cells of our kidneys reabsorb water to prevent it from all leaving through our urine. 
D)  A broken bottle of perfume is able to be smelled throughout the department store. 
E)  A bacterium in the blood stream is engulfed by a white blood cell. 
A)  Glucose is transported from our blood stream across cell membranes and into the cytoplasm. 
B)  Sodium is pumped across a cell to increase its concentration on one side of the cell membrane. 
C)  Cells of our kidneys reabsorb water to prevent it from all leaving through our urine. 
D)  A broken bottle of perfume is able to be smelled throughout the department store. 
E)  A bacterium in the blood stream is engulfed by a white blood cell. C

Question 2

Once the substrate moves into the active site of the enzyme

Accepted Answer

A)  the enzyme breaks the substrate into three products. 
B)  the two molecules fuse together to form the product. 
C)  the enzyme alters in shape to more closely fit the substrate. 
D)  the substrate alters shape to more closely fit the active site. 
E)  the substrate and enzyme both alter shape to fit together. 
A)  the enzyme breaks the substrate into three products. 
B)  the two molecules fuse together to form the product. 
C)  the enzyme alters in shape to more closely fit the substrate. 
D)  the substrate alters shape to more closely fit the active site. 
E)  the substrate and enzyme both alter shape to fit together. C

Question 3

In the set-up shown in the figure below,which of the following statements would describe what would be observed after 12 hours of time have elapsed?

Accepted Answer

A)  The level of the solution in the tube would rise because there are now more dissolved solutes present in the beaker than in the tube. 
B)  The level of the solution in the tube would lower because the glucose and salt would move into the tube. 
C) The level of the solution in the tube would rise because there are now more dissolved solutes in the tube than the beaker. 
D)  The level of the solution would not change as the membrane prohibits any exchange between tube and the beaker. 
E)  The level of solution in the tubes would see no change because the solute levels are equal on both sides. 
A)  The level of the solution in the tube would rise because there are now more dissolved solutes present in the beaker than in the tube. 
B)  The level of the solution in the tube would lower because the glucose and salt would move into the tube. 
C) The level of the solution in the tube would rise because there are now more dissolved solutes in the tube than the beaker. 
D)  The level of the solution would not change as the membrane prohibits any exchange between tube and the beaker. 
E)  The level of solution in the tubes would see no change because the solute levels are equal on both sides. C

Question 4

Because it is a passive process,which membrane transport process can continue whether the cell is alive or dead?

Accepted Answer

A)  diffusion 
B)  sodium/potassium pump 
C)  pinocytosis 
D)  phagocytosis 
E)  exocytosis 
A)  diffusion 
B)  sodium/potassium pump 
C)  pinocytosis 
D)  phagocytosis 
E)  exocytosis

Question 5

Why do metabolic pathways require tens to hundreds of different enzymes?

Accepted Answer

A)  The enzymes are used up after one reaction and the molecules have to undergo multiple rearrangements. 
B)  The enzyme is deformed by the interaction with the substrate and needs a period of time to return to its original reactive form so many enzymes are needed to keep the pathway going. 
C)  Each enzyme has a specific substrate and produces a specific product. 
D)  Multiple enzymes are not required for the pathway but having them speed up the production of the final product. 
E)  The enzymes are attached to a membrane and cannot move to the location of the new intermediate so having a long line of enzymes to carry out the reaction allows the reaction to occur faster. 
A)  The enzymes are used up after one reaction and the molecules have to undergo multiple rearrangements. 
B)  The enzyme is deformed by the interaction with the substrate and needs a period of time to return to its original reactive form so many enzymes are needed to keep the pathway going. 
C)  Each enzyme has a specific substrate and produces a specific product. 
D)  Multiple enzymes are not required for the pathway but having them speed up the production of the final product. 
E)  The enzymes are attached to a membrane and cannot move to the location of the new intermediate so having a long line of enzymes to carry out the reaction allows the reaction to occur faster.

Question 6

Considering the ATP cycle,which of the following would have the most potential energy to perform work for cell activities?

Accepted Answer

A)  ATP 
B)  ADP 
C)  adenosine 
D)  AMP 
E)  H+ ions 
A)  ATP 
B)  ADP 
C)  adenosine 
D)  AMP 
E)  H+ ions

Question 7

The second law of thermodynamics states that all energy transformations result in more disordered energy.How do living organisms,which depend on chemical potential converting to kinetic energy to fuel their function,continue to live?

Accepted Answer

A)  they must constantly take in chemical potential energy for fuel and excrete waste 
B)  living things do not obey the laws of thermodynamics 
C)  they must constantly take in chemical potential energy for fuel 
D)  they excrete the disordered molecules and lose the disordered energy as heat 
E)  they take the disordered molecules and heat energy and use them to create new fuel 
A)  they must constantly take in chemical potential energy for fuel and excrete waste 
B)  living things do not obey the laws of thermodynamics 
C)  they must constantly take in chemical potential energy for fuel 
D)  they excrete the disordered molecules and lose the disordered energy as heat 
E)  they take the disordered molecules and heat energy and use them to create new fuel

Question 8

Which of the following is not a type of potential energy?

Accepted Answer

A)  the energy in a glucose molecule 
B)  the energy contained in an rock sitting at the top of a cliff 
C)  the energy of a ball rolling down a hill 
D)  the energy contained in a hamburger 
E)  the energy of a diver standing on a diving board 
A)  the energy in a glucose molecule 
B)  the energy contained in an rock sitting at the top of a cliff 
C)  the energy of a ball rolling down a hill 
D)  the energy contained in a hamburger 
E)  the energy of a diver standing on a diving board

Question 9

Which form of passive transport allows small molecules,such as oxygen,to cross the cell membrane?

Accepted Answer

A)  diffusion 
B)  osmosis 
C)  plasmolysis 
D)  phagocytosis 
E)  pinocytosis 
A)  diffusion 
B)  osmosis 
C)  plasmolysis 
D)  phagocytosis 
E)  pinocytosis

Question 10

Which of the following enables a cell to pick up and concentrate a specific type of molecule?

Accepted Answer

A)  passive transport 
B)  receptor-mediated endocytosis 
C)  osmosis 
D)  exocytosis 
E)  facilitated diffusion 
A)  passive transport 
B)  receptor-mediated endocytosis 
C)  osmosis 
D)  exocytosis 
E)  facilitated diffusion

Question 11

Which of the following is not a mechanism used to move materials in and out of the cell?

Accepted Answer

A)  osmosis 
B)  facilitated diffusion 
C)  active transport 
D)  feedback inhibition 
E)  phagocytosis 
A)  osmosis 
B)  facilitated diffusion 
C)  active transport 
D)  feedback inhibition 
E)  phagocytosis

Question 12

Identify which of the following statements is not true.

Accepted Answer

A)  ATP is formed when energy is released during cell respiration. 
B)  When ATP becomes ADP + P, the amount of energy released is enough for a biological purpose. 
C)  ATP is comprised of a sugar, base, and two phosphate groups. 
D)  ATP contains the energy form used for cellular work. 
E)  ADP is low in potential energy. 
A)  ATP is formed when energy is released during cell respiration. 
B)  When ATP becomes ADP + P, the amount of energy released is enough for a biological purpose. 
C)  ATP is comprised of a sugar, base, and two phosphate groups. 
D)  ATP contains the energy form used for cellular work. 
E)  ADP is low in potential energy.

Question 13

Which of the types of cellular activities listed below would not use ATP?

Accepted Answer

A)  active transport 
B)  muscular contraction 
C)  flagella movement 
D)  passive transport 
E)  protein synthesis 
A)  active transport 
B)  muscular contraction 
C)  flagella movement 
D)  passive transport 
E)  protein synthesis

Question 14

The second law of thermodynamics states that all energy transformations result in more disordered energy.How can photosynthesis take more disordered carbon dioxide and water and convert them into glucose which is more ordered?

Accepted Answer

A)  living things do not obey the laws of thermodynamics 
B)  this is an illusion, it only appears that glucose is more ordered 
C)  photosynthesis is an exception to the second law of thermodynamics 
D)  solar energy is being added to the reaction to create glucose 
E)  plants are able to harness entropy and use it to carry out photosynthesis 
A)  living things do not obey the laws of thermodynamics 
B)  this is an illusion, it only appears that glucose is more ordered 
C)  photosynthesis is an exception to the second law of thermodynamics 
D)  solar energy is being added to the reaction to create glucose 
E)  plants are able to harness entropy and use it to carry out photosynthesis

Question 15

Which of the following is NOT an example of osmosis?

Accepted Answer

A)  Salting meat serves as a preservative. 
B)  Vegetables placed in fresh water firm up. 
C)  Sugar in coffee dissolves. 
D)  Strawberries placed in sugar become syrupy. 
E)  Eating salty popcorn makes people's lips dry. 
A)  Salting meat serves as a preservative. 
B)  Vegetables placed in fresh water firm up. 
C)  Sugar in coffee dissolves. 
D)  Strawberries placed in sugar become syrupy. 
E)  Eating salty popcorn makes people's lips dry.

Question 16

In feedback inhibition of a metabolic pathway,where does the inhibitor bind?

Accepted Answer

A)  to the enzyme of the first reaction 
B)  to the substrate of the first reaction 
C)  to the product of the first reaction 
D)  to the enzyme of the last reaction 
E)  to a substrate or the product of the last reaction 
A)  to the enzyme of the first reaction 
B)  to the substrate of the first reaction 
C)  to the product of the first reaction 
D)  to the enzyme of the last reaction 
E)  to a substrate or the product of the last reaction

Question 17

When a cell is in a solution where the concentration of solute is the same in the cell as in the solution,the solution is called

Accepted Answer

A)  isotonic. 
B)  hypertonic. 
C)  hypotonic. 
D)  osmotonic. 
E)  saturated. 
A)  isotonic. 
B)  hypertonic. 
C)  hypotonic. 
D)  osmotonic. 
E)  saturated.

Question 18

In the set-up shown in the figure below,which process allows the water to move across the membrane?

Accepted Answer

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

Question 19

Which of the following statements reflects what occurs in the flow of energy conversions through living systems?

Accepted Answer

A)  Chloroplasts convert solar energy to the chemical energy of nutrient molecules. 
B)  Mitochondria convert ATP molecules into glucose. 
C)  Chloroplasts produce CO2 and H2O during photosynthesis. 
D)  Mitochondria capture solar energy and convert it to oxygen. 
E)  Chloroplasts burn glucose into ATP molecules during cell respiration. 
A)  Chloroplasts convert solar energy to the chemical energy of nutrient molecules. 
B)  Mitochondria convert ATP molecules into glucose. 
C)  Chloroplasts produce CO2 and H2O during photosynthesis. 
D)  Mitochondria capture solar energy and convert it to oxygen. 
E)  Chloroplasts burn glucose into ATP molecules during cell respiration.

Question 20

Intestinal cells absorb glucose via active transport.What would happen if all the mitochondria within these intestinal cells were destroyed?

Accepted Answer

A)  Glucose absorption would increase. 
B)  Glucose absorption would decrease. 
C)  Glucose absorption would stop. 
D)  Glucose absorption would not be affected. 
E)  Glucose absorption would be slow at first and then increase. 
A)  Glucose absorption would increase. 
B)  Glucose absorption would decrease. 
C)  Glucose absorption would stop. 
D)  Glucose absorption would not be affected. 
E)  Glucose absorption would be slow at first and then increase.

Exam 5: The Dynamic Cell

Which of the following is an example of osmosis?

Once the substrate moves into the active site of the enzyme

In the set-up shown in the figure below,which of the following statements would describe what would be observed after 12 hours of time have elapsed?

Because it is a passive process,which membrane transport process can continue whether the cell is alive or dead?

Why do metabolic pathways require tens to hundreds of different enzymes?

Considering the ATP cycle,which of the following would have the most potential energy to perform work for cell activities?

The second law of thermodynamics states that all energy transformations result in more disordered energy.How do living organisms,which depend on chemical potential converting to kinetic energy to fuel their function,continue to live?

Which of the following is not a type of potential energy?

Which form of passive transport allows small molecules,such as oxygen,to cross the cell membrane?

Which of the following enables a cell to pick up and concentrate a specific type of molecule?

Which of the following is not a mechanism used to move materials in and out of the cell?

Identify which of the following statements is not true.

Which of the types of cellular activities listed below would not use ATP?

The second law of thermodynamics states that all energy transformations result in more disordered energy.How can photosynthesis take more disordered carbon dioxide and water and convert them into glucose which is more ordered?

Which of the following is NOT an example of osmosis?

In feedback inhibition of a metabolic pathway,where does the inhibitor bind?

When a cell is in a solution where the concentration of solute is the same in the cell as in the solution,the solution is called

In the set-up shown in the figure below,which process allows the water to move across the membrane?

Which of the following statements reflects what occurs in the flow of energy conversions through living systems?

Intestinal cells absorb glucose via active transport.What would happen if all the mitochondria within these intestinal cells were destroyed?

Biology: The Science of Life

The Chemical Basis of Life

The Organic Molecules of Life

Inside the Cell

Energy for Life

Energy for Cells

Cellular Reproduction

Meiosis and the Genetic Basis of Sexual Reproduction

Patterns of Inheritance

DNA Biology

Biotechnology and Genomics

Genetic Counseling

Darwin and Evolution

Evolution on a Small Scale

Evolution on a Large Scale

The Microorganisms: Viruses, bacteria, and Protists

Land Environment: Plants and Fungi

Both Water and Land: Animals

Plant Anatomy and Growth

Plant Responses and Reproduction

Being Organized and Steady

The Transport Systems

The Maintenance Systems

Human Nutrition

Defenses Against Disease

The Control Systems

Sensory Input and Motor Output

Reproduction and Embryonic Development

Ecology and Populations

Communities and Ecosystems

Human Impact on the Biosphere

Filters