Question 1

A cell lacking ribosomes would be unable to make what organic compound?

Accepted Answer

A) lipids 
B) nucleotides 
C) proteins 
D) carbohydrates 
E) phospholipids 
A) lipids 
B) nucleotides 
C) proteins 
D) carbohydrates 
E) phospholipids

Question 2

Specialized structures within a cell that have a characteristic shape and perform specific functions in cellular growth,maintenance and reproduction are called

Accepted Answer

A) organelles. 
B) cytoskeletons. 
C) cytoplasm. 
D) cytosol. 
E) nuclei. 
A) organelles. 
B) cytoskeletons. 
C) cytoplasm. 
D) cytosol. 
E) nuclei.

Question 3

Define homologous chromosomes.

Accepted Answer

Homologous chromosom

Question 4

Which of the following transport process uses vesicles formed at the plasma membrane to take up extracellular substances and import them into the cell?

Accepted Answer

A) endocytosis 
B) exocytosis 
C) facilitated diffusion 
D) osmosis 
E) Both endocytosis and exocytosis. 
A) endocytosis 
B) exocytosis 
C) facilitated diffusion 
D) osmosis 
E) Both endocytosis and exocytosis.

Question 5

In the diagram,which one represents carrier-mediated facilitated diffusion?

Accepted Answer

A) A 
B) B 
C) C 
D) Both A and C 
E) Both B and C 
A) A 
B) B 
C) C 
D) Both A and C 
E) Both B and C

Question 6

The following is a particular sequence of codon on mRNA: ACU.What is the corresponding anti-codon for the tRNA?

Accepted Answer

A) UGA 
B) UCA 
C) TGA 
D) TCA 
E) AUC 
A) UGA 
B) UCA 
C) TGA 
D) TCA 
E) AUC

Question 7

Plasma membranes are _____,which means that some chemicals move easily through plasma membrane while other chemicals do not.

Accepted Answer

A) selectively permeable 
B) concentration graded 
C) electrically graded 
D) selectively soluble 
E) electrical insulators 
A) selectively permeable 
B) concentration graded 
C) electrically graded 
D) selectively soluble 
E) electrical insulators

Question 8

In the diagram,which organelle is responsible for autophagy and autolysis?

Accepted Answer

A) C 
B) B 
C) F 
D) J 
E) D 
A) C 
B) B 
C) F 
D) J 
E) D

Question 9

What are the nonpolar parts of phospholipids?

Accepted Answer

A) phosphate-containing head groups 
B) fatty acid tail groups 
C) Both the head and tail groups are nonpolar. 
D) Neither the head nor tail groups are nonpolar. 
A) phosphate-containing head groups 
B) fatty acid tail groups 
C) Both the head and tail groups are nonpolar. 
D) Neither the head nor tail groups are nonpolar.

Question 10

The major function of mitochondria is to

Accepted Answer

A) move the cell. 
B) generate ATP. 
C) produce proteins. 
D) oxidize organelles. 
E) synthesize glycolipids. 
A) move the cell. 
B) generate ATP. 
C) produce proteins. 
D) oxidize organelles. 
E) synthesize glycolipids.

Question 11

Describe five different functions of integral membrane proteins.

Accepted Answer

Some membrane proteins act as ion channe

Question 12

Which of the following is NOT a characteristic of the cytosol?

Accepted Answer

A) primarily consists of water 
B) ca is also known as extracellular fluid 
C) site of many important chemical reactions 
D) often contains aggregates of triglycerides that form lipid droplets 
E) contains the enzymes of glycolysis 
A) primarily consists of water 
B) ca is also known as extracellular fluid 
C) site of many important chemical reactions 
D) often contains aggregates of triglycerides that form lipid droplets 
E) contains the enzymes of glycolysis

Question 13

Briefly describe the fluid mosaic model.

Accepted Answer

The fluid mosaic model states

Question 14

Which disease below is an inherited condition characterized by the absence of a single lysosomal enzyme called Hex A?

Accepted Answer

A) Tay-Sachs disease 
B) leukemia 
C) progeria 
D) lymphoma 
E) Werner syndrome 
A) Tay-Sachs disease 
B) leukemia 
C) progeria 
D) lymphoma 
E) Werner syndrome

Question 15

Compare and contrast primary and secondary active transport.

Accepted Answer

Both are energy requiring transport proc

Question 16

Which of the following is the correct sequence of events in bulk-phase endocytosis shown in the figure?

Accepted Answer

A) plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes > solutes released 
B) solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes 
C) vesicle formed pinches off into cytosol > solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes 
D) vesicle formed pinches off into cytosol > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes > solutes released 
E) plasma membrane forms vesicle around extracellular droplets > vesicle formed pinches off into cytosol > fusion of lysosome and vesicle > digestion by enzymes > solutes released 
A) plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes > solutes released 
B) solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes 
C) vesicle formed pinches off into cytosol > solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes 
D) vesicle formed pinches off into cytosol > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes > solutes released 
E) plasma membrane forms vesicle around extracellular droplets > vesicle formed pinches off into cytosol > fusion of lysosome and vesicle > digestion by enzymes > solutes released

Question 17

Which of the following membrane-enclosed organelles contains several oxidases that are involved in oxidation of fatty acids and amino acids during normal metabolism and in detoxification of chemicals like alcohol in the liver?

Accepted Answer

A) peroxisomes 
B) mitochondria 
C) proteasome 
D) ribosomes 
E) lysosomes 
A) peroxisomes 
B) mitochondria 
C) proteasome 
D) ribosomes 
E) lysosomes

Question 18

In the diagram,which organelle is used to modify,sort and transport proteins?

Accepted Answer

A) D 
B) I 
C) A 
D) J 
E) G 
A) D 
B) I 
C) A 
D) J 
E) G

Question 19

Which type of membrane protein anchors cells to neighboring cells and to protein filaments found outside or inside the cell?

Accepted Answer

A) transporters 
B) receptors 
C) ligands 
D) ion channels 
E) linkers 
A) transporters 
B) receptors 
C) ligands 
D) ion channels 
E) linkers

Question 20

Which of the following is the correct sequence of events in phagocytosis shown in the figure?

Accepted Answer

A) pseudopods surround particle > phagosome formed > fusion of lysosome and phagosome > digestion by lysosomal enzymes > residual body formed 
B) phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > digestion by lysosomal enzymes > residual body formed 
C) phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > residual body formed > digestion by lysosomal enzymes 
D) residual body formed > phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > digestion by lysosomal enzymes 
E) fusion of lysosome and phagosome > residual body formed > phagosome formed > pseudopods surround particle > digestion by lysosomal enzymes 
A) pseudopods surround particle > phagosome formed > fusion of lysosome and phagosome > digestion by lysosomal enzymes > residual body formed 
B) phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > digestion by lysosomal enzymes > residual body formed 
C) phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > residual body formed > digestion by lysosomal enzymes 
D) residual body formed > phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > digestion by lysosomal enzymes 
E) fusion of lysosome and phagosome > residual body formed > phagosome formed > pseudopods surround particle > digestion by lysosomal enzymes

Exam 3: The Cellular Level of Organization

A cell lacking ribosomes would be unable to make what organic compound?

Specialized structures within a cell that have a characteristic shape and perform specific functions in cellular growth,maintenance and reproduction are called

Define homologous chromosomes.

Which of the following transport process uses vesicles formed at the plasma membrane to take up extracellular substances and import them into the cell?

In the diagram,which one represents carrier-mediated facilitated diffusion?

The following is a particular sequence of codon on mRNA: ACU.What is the corresponding anti-codon for the tRNA?

Plasma membranes are _____,which means that some chemicals move easily through plasma membrane while other chemicals do not.

In the diagram,which organelle is responsible for autophagy and autolysis?

What are the nonpolar parts of phospholipids?

The major function of mitochondria is to

Describe five different functions of integral membrane proteins.

Which of the following is NOT a characteristic of the cytosol?

Briefly describe the fluid mosaic model.

Which disease below is an inherited condition characterized by the absence of a single lysosomal enzyme called Hex A?

Compare and contrast primary and secondary active transport.

Which of the following is the correct sequence of events in bulk-phase endocytosis shown in the figure?

Which of the following membrane-enclosed organelles contains several oxidases that are involved in oxidation of fatty acids and amino acids during normal metabolism and in detoxification of chemicals like alcohol in the liver?

In the diagram,which organelle is used to modify,sort and transport proteins?

Which type of membrane protein anchors cells to neighboring cells and to protein filaments found outside or inside the cell?

Which of the following is the correct sequence of events in phagocytosis shown in the figure?

An Introduction to the Human Body

The Chemical Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Reproductive Systems

Development and Inheritance

Filters