Question 1

During low tide,a plant or animal would be at risk of ______.

Accepted Answer

A) bursting by osmosis of water 
B) dehydration by facilitated diffusion of salts 
C) dehydration by osmosis of water 
D) bursting by active transport of salts 
E) dehydration by active transport of salts 
A) bursting by osmosis of water 
B) dehydration by facilitated diffusion of salts 
C) dehydration by osmosis of water 
D) bursting by active transport of salts 
E) dehydration by active transport of salts A

Question 2

The vertical drop slightly after the peak of each curve on the figure illustrates

Accepted Answer

A) that enzymes will not work if temperatures are too hot (or too cold). 
B) an increased rate of reaction. 
C) a decreased temperature. 
D) that temperatures only affect enzymes up to a specific temperature. 
E) that enzymes are most efficient at cold temperatures. 
A) that enzymes will not work if temperatures are too hot (or too cold). 
B) an increased rate of reaction. 
C) a decreased temperature. 
D) that temperatures only affect enzymes up to a specific temperature. 
E) that enzymes are most efficient at cold temperatures. A

Question 3

Salted and pickled foods can last unrefridgerated for many years because

Accepted Answer

A) the extreme salt or pH concentration denatures the proteins,including enzymes. 
B) the concentration gradient of salt or vinegar causes osmosis into the food. 
C) equilibrium with the environment has occured. 
D) the concentration gradient of salt or vinegar causes osmosis out of the fooD. 
E) the concentration gradient of salt or vinegar causes osmosis out of the food and the extreme salt or pH concentration denatures the proteins,including enzymes. 
A) the extreme salt or pH concentration denatures the proteins,including enzymes. 
B) the concentration gradient of salt or vinegar causes osmosis into the food. 
C) equilibrium with the environment has occured. 
D) the concentration gradient of salt or vinegar causes osmosis out of the fooD. 
E) the concentration gradient of salt or vinegar causes osmosis out of the food and the extreme salt or pH concentration denatures the proteins,including enzymes. E

Question 4

Exergonic reactions do not require activation energy to get started since they release energy.

Accepted Answer

A) True 
 B)False

Question 5

During low tide,a plant cell will have an advantage over an animal cell because of its ____.

Accepted Answer

A) cell wall 
B) plasma membrane 
C) chloroplasts 
D) nucleus 
E) mitochondria 
A) cell wall 
B) plasma membrane 
C) chloroplasts 
D) nucleus 
E) mitochondria

Question 6

One way to produce a vaccine is to heat a virus or bacteria and then inject the inactive pathogen as a vaccination.How does the heat inactivate a virus?

Accepted Answer

A) All answers are correct 
B) by inhibiting its metabolism 
C) by destroying the membrane 
D) by blocking facilitated diffusion 
E) by denaturing proteins 
A) All answers are correct 
B) by inhibiting its metabolism 
C) by destroying the membrane 
D) by blocking facilitated diffusion 
E) by denaturing proteins

Question 7

Enzymes speed chemical reactions by

Accepted Answer

A) lowering the amount of reactants that are needed. 
B) maintaining temperature. 
C) lowering the energy required to start a chemical reaction. 
D) raising the temperature of the surroundings. 
E) supplying energy to the reaction process. 
A) lowering the amount of reactants that are needed. 
B) maintaining temperature. 
C) lowering the energy required to start a chemical reaction. 
D) raising the temperature of the surroundings. 
E) supplying energy to the reaction process.

Question 8

If you drop a rubber ball and it does not bounce back to the height you dropped it from.This is consistent with

Accepted Answer

A) conversion of entropy into potential energy. 
B) the first law of thermodynamics. 
C) conversion of kinetic energy into potential energy. 
D) conversion of kinetic energy into entropy. 
E) the second law of thermodynamics. 
A) conversion of entropy into potential energy. 
B) the first law of thermodynamics. 
C) conversion of kinetic energy into potential energy. 
D) conversion of kinetic energy into entropy. 
E) the second law of thermodynamics.

Question 9

An endergonic reaction is a reaction that

Accepted Answer

A) requires an input of energy. 
B) typically builds complex molecules from smaller molecules. 
C) releases energy to its surroundings. 
D) Both releases energy to its surroundings and typically builds complex molecules from smaller molecules are correct. 
E) Both requires an input of energy and typically builds complex molecules from smaller molecules are correct. 
A) requires an input of energy. 
B) typically builds complex molecules from smaller molecules. 
C) releases energy to its surroundings. 
D) Both releases energy to its surroundings and typically builds complex molecules from smaller molecules are correct. 
E) Both requires an input of energy and typically builds complex molecules from smaller molecules are correct.

Question 10

The two data curves on the figure illustrate that

Accepted Answer

A) temperature ranges are not the same for all enzyme activity. 
B) temperature is not related to enzyme efficiency. 
C) optimal temperature ranges are not the same for all enzymes. 
D) pH is not related to enzyme efficiency. 
E) All answers are correct. 
A) temperature ranges are not the same for all enzyme activity. 
B) temperature is not related to enzyme efficiency. 
C) optimal temperature ranges are not the same for all enzymes. 
D) pH is not related to enzyme efficiency. 
E) All answers are correct.

Question 11

A bowl of sugar water is very stable.But if you feed it to cells then it is rapidly broken down into carbon dioxide,water,and ATP.What is the best explanation for this observation?

Accepted Answer

A) Enzymes in the cell catalyze the breakdown of the glucose. 
B) Cells use energy to break down the glucose. 
C) Glucose becomes more chemically reactive inside of a cell. 
D) Glucose cannot be broken down outside of a cell. 
E) Glucose is removed from the cell by active transport. 
A) Enzymes in the cell catalyze the breakdown of the glucose. 
B) Cells use energy to break down the glucose. 
C) Glucose becomes more chemically reactive inside of a cell. 
D) Glucose cannot be broken down outside of a cell. 
E) Glucose is removed from the cell by active transport.

Question 12

Reduction is the gain of electrons.

Accepted Answer

A) True 
 B)False

Question 13

During high tide,a plant or animal would be at risk of ______.

Accepted Answer

A) bursting by osmosis of water 
B) dehydration by facilitated diffusion of salts 
C) dehydration by osmosis of water 
D) bursting by active transport of salts 
E) dehydration by active transport of salts 
A) bursting by osmosis of water 
B) dehydration by facilitated diffusion of salts 
C) dehydration by osmosis of water 
D) bursting by active transport of salts 
E) dehydration by active transport of salts

Question 14

Active transport is different from simple diffusion because active transport

Accepted Answer

A) requires energy. 
B) moves molecules against a concentration gradient. 
C) requires the use of proteins embedded within the cell membrane. 
D) moves molecules from an area of lower concentration to an area of higher concentration. 
E) All answers are correct. 
A) requires energy. 
B) moves molecules against a concentration gradient. 
C) requires the use of proteins embedded within the cell membrane. 
D) moves molecules from an area of lower concentration to an area of higher concentration. 
E) All answers are correct.

Question 15

Your liver produces 90% of the cholesterol found in your body.When cholesterol levels get too high,the first enzyme in the pathway of cholesterol synthesis is inhibited.This is an example of

Accepted Answer

A) positive feedback. 
B) denaturation. 
C) equilibrium. 
D) negative feedback. 
E) a coenzymE. 
A) positive feedback. 
B) denaturation. 
C) equilibrium. 
D) negative feedback. 
E) a coenzymE.

Question 16

Energy is harvested from ______ and used ______.

Accepted Answer

A) food,light,and chemicals;to do endergonic reactions 
B) endergonic reactions;to do cellular processes 
C) active transport;facilitated diffusion 
D) endocytosis;exocytosis 
E) exocytosis;endocytosis 
A) food,light,and chemicals;to do endergonic reactions 
B) endergonic reactions;to do cellular processes 
C) active transport;facilitated diffusion 
D) endocytosis;exocytosis 
E) exocytosis;endocytosis

Question 17

Why does phenylalanine accumulate in patients with phenylketonuria?

Accepted Answer

A) They lack an enzyme to break down phenylalanine. 
B) They lack an enzyme to produce phenylalanine. 
C) They produce too much phenylalanine. 
D) They lack an inhibitor of an enzyme to break down phenylalanine. 
E) They eat more phenylalanine than most peoplE. 
A) They lack an enzyme to break down phenylalanine. 
B) They lack an enzyme to produce phenylalanine. 
C) They produce too much phenylalanine. 
D) They lack an inhibitor of an enzyme to break down phenylalanine. 
E) They eat more phenylalanine than most peoplE.

Question 18

Which of the following are examples of potential energy?

Accepted Answer

A) electrons moving through the electron transport chain,proton gradient 
B) electrons in chemical bonds,proton gradient,ATP 
C) protons moving through ATP synthase,ATP 
D) electrons moving through the electron transport chain,and protons moving through ATP synthase 
E) All answers are correct. 
A) electrons moving through the electron transport chain,proton gradient 
B) electrons in chemical bonds,proton gradient,ATP 
C) protons moving through ATP synthase,ATP 
D) electrons moving through the electron transport chain,and protons moving through ATP synthase 
E) All answers are correct.

Question 19

An example (examples)of potential energy is (are)

Accepted Answer

A) chemical bonds and concentration gradients. 
B) light and chemical bonds. 
C) quartz crystals vibrating in a wristwatch. 
D) soil heated by sunlight. 
E) light. 
A) chemical bonds and concentration gradients. 
B) light and chemical bonds. 
C) quartz crystals vibrating in a wristwatch. 
D) soil heated by sunlight. 
E) light.

Question 20

If a cell has a greater concentration of solute than its environment

Accepted Answer

A) the cell is hypertonic to the environment. 
B) the cell is isotonic to the environment. 
C) the cell is hypotonic to the environment. 
D) the cell will not experience a net gain or loss of water. 
E) the cell will diE. 
A) the cell is hypertonic to the environment. 
B) the cell is isotonic to the environment. 
C) the cell is hypotonic to the environment. 
D) the cell will not experience a net gain or loss of water. 
E) the cell will diE.

Exam 4: The Energy of Life

During low tide,a plant or animal would be at risk of ______.

The vertical drop slightly after the peak of each curve on the figure illustrates

Salted and pickled foods can last unrefridgerated for many years because

Exergonic reactions do not require activation energy to get started since they release energy.

During low tide,a plant cell will have an advantage over an animal cell because of its ____.

One way to produce a vaccine is to heat a virus or bacteria and then inject the inactive pathogen as a vaccination.How does the heat inactivate a virus?

Enzymes speed chemical reactions by

If you drop a rubber ball and it does not bounce back to the height you dropped it from.This is consistent with

An endergonic reaction is a reaction that

The two data curves on the figure illustrate that

A bowl of sugar water is very stable.But if you feed it to cells then it is rapidly broken down into carbon dioxide,water,and ATP.What is the best explanation for this observation?

Reduction is the gain of electrons.

During high tide,a plant or animal would be at risk of ______.

Active transport is different from simple diffusion because active transport

Your liver produces 90% of the cholesterol found in your body.When cholesterol levels get too high,the first enzyme in the pathway of cholesterol synthesis is inhibited.This is an example of

Energy is harvested from ______ and used ______.

Why does phenylalanine accumulate in patients with phenylketonuria?

Which of the following are examples of potential energy?

An example (examples)of potential energy is (are)

If a cell has a greater concentration of solute than its environment

Scientific Study of Life

The Chemistry of Life

Cells

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

DNA Replication and Cell Division

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Population Ecology

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

Regulating Temperature, nutrients, and Body Fluids

The Immune System

Animal Reproduction and Development

Filters

Energy is harvested from and used .