Question 1

According to the fluid-mosaic model,a cell membrane is assembled from

Accepted Answer

A) a phospholipid bilayer with embedded proteins 
B) charged and uncharged fatty acids 
C) a bilayer of glycolipids on top of cholesterol 
D) microtubules that keep it intact 
E) only proteins functioning as enzymes 
A) a phospholipid bilayer with embedded proteins 
B) charged and uncharged fatty acids 
C) a bilayer of glycolipids on top of cholesterol 
D) microtubules that keep it intact 
E) only proteins functioning as enzymes

Question 2

Which of these statements summarizes the Second Law of Thermodynamics?

Accepted Answer

A) One usable form of energy cannot be completely converted into a more useable form. 
B) One usable form of energy can be completely converted into another useable form. 
C) Energy can be created and destroyed. 
D) Energy cannot be created or destroyeD. 
E) Energy cannot be transformed. 
A) One usable form of energy cannot be completely converted into a more useable form. 
B) One usable form of energy can be completely converted into another useable form. 
C) Energy can be created and destroyed. 
D) Energy cannot be created or destroyeD. 
E) Energy cannot be transformed.

Question 3

Figure:  
-What does "B" represent in the diagram of the plasma membrane?

Accepted Answer

A) peripheral protein 
B) phospholipids bilayer 
C) glycolipid 
D) hydrophilic heads 
E) cytoskeleton 
A) peripheral protein 
B) phospholipids bilayer 
C) glycolipid 
D) hydrophilic heads 
E) cytoskeleton

Question 4

When chloride ions cannot cross through the plasma membrane,what disease does the patient have?

Accepted Answer

A) Color blindness 
B) Cystic fibrosis 
C) Type 1 diabetes 
D) Huntington's disease 
E) Type 2 diabetes 
A) Color blindness 
B) Cystic fibrosis 
C) Type 1 diabetes 
D) Huntington's disease 
E) Type 2 diabetes

Question 5

How do cyanide and sarin nerve gas act on enzyme targets?

Accepted Answer

A) cofactors 
B) coenzymes 
C) enzyme mimics 
D) coactivators 
E) enzyme inhibitors 
A) cofactors 
B) coenzymes 
C) enzyme mimics 
D) coactivators 
E) enzyme inhibitors

Question 6

As a rock rolls down a hill,which of the following statements would best explain what is occurring?

Accepted Answer

A) Potential energy increases as heat energy increases. 
B) Kinetic energy decreases as potential energy increases. 
C) Kinetic energy decreases as heat energy increases. 
D) Potential energy decreases as kinetic energy increases. 
E) Potential energy and kinetic energy do not changE. 
A) Potential energy increases as heat energy increases. 
B) Kinetic energy decreases as potential energy increases. 
C) Kinetic energy decreases as heat energy increases. 
D) Potential energy decreases as kinetic energy increases. 
E) Potential energy and kinetic energy do not changE.

Question 7

Which process imports liquid and very small particles into cells?

Accepted Answer

A) pinocytosis 
B) facilitated transport 
C) phagocytosis 
D) exocytosis 
E) osmosis 
A) pinocytosis 
B) facilitated transport 
C) phagocytosis 
D) exocytosis 
E) osmosis

Question 8

Both plant and animal cells,at least some of each,have structures which join them together for communication.

Accepted Answer

A) True 
 B)False

Question 9

Which is the correct association of a cell membrane protein type and its function?

Accepted Answer

A) channel proteins : assist in cell-to-cell communication 
B) carrier proteins : carry out metabolic reactions 
C) cell recognition proteins : help substance move across the cell membrane 
D) enzymatic proteins : allow molecules to move across membrane 
E) receptor proteins : have a binding site for a specific molecule 
A) channel proteins : assist in cell-to-cell communication 
B) carrier proteins : carry out metabolic reactions 
C) cell recognition proteins : help substance move across the cell membrane 
D) enzymatic proteins : allow molecules to move across membrane 
E) receptor proteins : have a binding site for a specific molecule

Question 10

A cell placed in a hypertonic solution will

Accepted Answer

A) lose water. 
B) gain water. 
C) neither gain nor lose water. 
D) both gain and lose water equally. 
E) ggin water initially and then lose water. 
A) lose water. 
B) gain water. 
C) neither gain nor lose water. 
D) both gain and lose water equally. 
E) ggin water initially and then lose water.

Exam 5: Dynamic Activities of Cells

According to the fluid-mosaic model,a cell membrane is assembled from

Which of these statements summarizes the Second Law of Thermodynamics?

Figure: -What does "B" represent in the diagram of the plasma membrane?

When chloride ions cannot cross through the plasma membrane,what disease does the patient have?

How do cyanide and sarin nerve gas act on enzyme targets?

As a rock rolls down a hill,which of the following statements would best explain what is occurring?

Which process imports liquid and very small particles into cells?

Both plant and animal cells,at least some of each,have structures which join them together for communication.

Which is the correct association of a cell membrane protein type and its function?

A cell placed in a hypertonic solution will

Biology, the Study of Life

Basic Chemistry of Cells

Organic Molecules of Cells

Structure and Function of Cells

Pathways of Photosynthesis

Pathways of Cellular Respiration

Cellular Reproduction

Sexual Reproduction

Patterns of Genetic Inheritance

Molecular Biology of Inheritance

Regulation of Gene Activity

Biotechnology and Genomics

Evidence of Evolution

Speciation and Evolution

The Evolutionary History of Life on Earth

Evolution of Microbial Life

Evolution of Protists

Evolution of Plants and Fungi

Evolution of Animals

Evolution of Humans

Plant Organization and Homeostasis

Transport and Nutrition in Plants

Control of Growth Responses in Plants

Reproduction in Plants

Animal Organization and Homeostasis

Coordination by Neural Signaling

Sense Organs

Locomotion and Support Systems

Circulation and Cardiovascular Systems

Lymph Transport and Immunity

Digestive Systems and Nutrition

Gas Exchange and Transport in Animals

Osmoregulation and Excretion

Coordination by Hormone Signaling

Reproduction and Development

Population Ecology

Behavioral Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

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