Question 1

Briefly describe the glycocalyx and its functions.

Accepted Answer

The glycocalyx is the sticky,c

Question 2

Telomeres are the regions of chromosomes that code for the protein ubiquitin.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following statements is most correct regarding the intracellular chemical signals known as "second messengers"?

Accepted Answer

A)  Second messengers usually inactivate protein kinase enzymes. 
B)  Second messengers usually act to remove nitric oxide (NO) from the cell. 
C)  Cyclic AMP and calcium may be second messengers. 
D)  Second messengers act through receptors called K-proteins. 
A)  Second messengers usually inactivate protein kinase enzymes. 
B)  Second messengers usually act to remove nitric oxide (NO) from the cell. 
C)  Cyclic AMP and calcium may be second messengers. 
D)  Second messengers act through receptors called K-proteins.

Question 4

Your patient has a respiratory disease that has literally paralyzed the cilia.Explain why this patient would be at an increased risk for a respiratory infection.

Accepted Answer

Ciliated cells that live in the respirat

Question 5

Figure 3.2
Using Figure 3.2, match the following:
-Polar region of phospholipid.

Accepted Answer

A) A 
B) E 
C) C 
D) D 
E) B 
A) A 
B) E 
C) C 
D) D 
E) B

Question 6

Which of the following is NOT a function of the smooth endoplasmic reticulum?

Accepted Answer

A)  breakdown of stored glycogen to form free glucose 
B)  steroid-based hormone synthesis 
C)  protein synthesis in conjunction with ribosomes 
D)  lipid metabolism and cholesterol synthesis 
A)  breakdown of stored glycogen to form free glucose 
B)  steroid-based hormone synthesis 
C)  protein synthesis in conjunction with ribosomes 
D)  lipid metabolism and cholesterol synthesis

Question 7

Which of the following is a principle of the fluid mosaic model of cell membrane structure?

Accepted Answer

A)  Phospholipids form a bilayer that is largely impermeable to water-soluble molecules. 
B)  Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains. 
C)  All proteins associated with the cell membrane are contained in a fluid layer on the outside of the cell. 
D)  The lipid bilayer is a solid at body temperature, thus protecting the cell. 
A)  Phospholipids form a bilayer that is largely impermeable to water-soluble molecules. 
B)  Phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains. 
C)  All proteins associated with the cell membrane are contained in a fluid layer on the outside of the cell. 
D)  The lipid bilayer is a solid at body temperature, thus protecting the cell.

Question 8

The glycocalyx is composed of glycolipids,glycoproteins and cholesterol molecules that are displayed on the outside surface of the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 9

Match the following:
-The organelle that facilitates peptic bond formation between amino acids.

Accepted Answer

A) Microtubules 
B) Nucleoli 
C) Ribosomes 
D) Endoplasmic reticulum 
E) Nucleus 
A) Microtubules 
B) Nucleoli 
C) Ribosomes 
D) Endoplasmic reticulum 
E) Nucleus

Question 10

Aquaporins are believed to be present in red blood cells and kidney tubules,but not in any other cells in the body.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following would not be restricted (limited)by low levels of ATP?

Accepted Answer

A)  exocytosis 
B)  pinocytosis 
C)  phagocytosis 
D)  osmosis 
A)  exocytosis 
B)  pinocytosis 
C)  phagocytosis 
D)  osmosis

Question 12

Match the following:
-Present in electrically excitable tissues.

Accepted Answer

A) Tight junctions 
B) Gap junctions 
C) Desmosomes 
A) Tight junctions 
B) Gap junctions 
C) Desmosomes

Question 13

How are peroxisomes different from lysosomes?

Accepted Answer

Peroxisomes contain oxidases that use ox

Question 14

Which of the following statements is correct regarding net diffusion?

Accepted Answer

A)  The greater the concentration gradient, the faster the rate. 
B)  The lower the temperature, the faster the rate. 
C)  The rate is independent of temperature. 
D)  Molecular weight of a substance does not affect the rate. 
A)  The greater the concentration gradient, the faster the rate. 
B)  The lower the temperature, the faster the rate. 
C)  The rate is independent of temperature. 
D)  Molecular weight of a substance does not affect the rate.

Question 15

Describe the difference in cell division between normal cells and cancer cells.

Accepted Answer

Normal cells divide in two distinct even

Question 16

Figure 3.1
Using Figure 3.1, match the following:
-Packages proteins for insertion in the cell membrane or for exocytosis.

Accepted Answer

A) C 
B) E 
C) D 
D) A 
E) B 
A) C 
B) E 
C) D 
D) A 
E) B

Question 17

At of age of 6 months,Caleb was diagnosed with Tay-Sachs disease.As his primary care physician,what would you tell his parents about this disease?

Accepted Answer

It is an inherited condition where vario

Question 18

Apoptosis is programmed cell suicide; cancer cells do not undergo this process.

Accepted Answer

A) True 
 B)False

Question 19

The most common extracellular ion is ________.

Accepted Answer

The answer of The most common extracellular ion is ________....

Question 20

Which of the following would NOT assist in establishing a resting membrane potential?

Accepted Answer

A)  Having greater concentration of glycolipids on the outside surface of the membrane. 
B)  Selective diffusion allowing more uncharged particles into the cell. 
C)  Selective diffusion allowing more positively charged ions to diffuse out of the cell. 
D)  Selective diffusion allowing fewer positively charged ions to diffuse into the cell. 
A)  Having greater concentration of glycolipids on the outside surface of the membrane. 
B)  Selective diffusion allowing more uncharged particles into the cell. 
C)  Selective diffusion allowing more positively charged ions to diffuse out of the cell. 
D)  Selective diffusion allowing fewer positively charged ions to diffuse into the cell.

Exam 3: Cells: the Living Units

Briefly describe the glycocalyx and its functions.

Telomeres are the regions of chromosomes that code for the protein ubiquitin.

Which of the following statements is most correct regarding the intracellular chemical signals known as "second messengers"?

Your patient has a respiratory disease that has literally paralyzed the cilia.Explain why this patient would be at an increased risk for a respiratory infection.

Figure 3.2 Using Figure 3.2, match the following: -Polar region of phospholipid.

Which of the following is NOT a function of the smooth endoplasmic reticulum?

Which of the following is a principle of the fluid mosaic model of cell membrane structure?

The glycocalyx is composed of glycolipids,glycoproteins and cholesterol molecules that are displayed on the outside surface of the plasma membrane.

Match the following: -The organelle that facilitates peptic bond formation between amino acids.

Aquaporins are believed to be present in red blood cells and kidney tubules,but not in any other cells in the body.

Which of the following would not be restricted (limited)by low levels of ATP?

Match the following: -Present in electrically excitable tissues.

How are peroxisomes different from lysosomes?

Which of the following statements is correct regarding net diffusion?

Describe the difference in cell division between normal cells and cancer cells.

Figure 3.1 Using Figure 3.1, match the following: -Packages proteins for insertion in the cell membrane or for exocytosis.

At of age of 6 months,Caleb was diagnosed with Tay-Sachs disease.As his primary care physician,what would you tell his parents about this disease?

Apoptosis is programmed cell suicide; cancer cells do not undergo this process.

The most common extracellular ion is ________.

Which of the following would NOT assist in establishing a resting membrane potential?

The Human Body: an Orientation

Chemistry Comes Alive

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defenses

The Respiratory System

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

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