Ch 2: Online 1 Flashcards Preview

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Flashcards in Ch 2: Online 1 Deck (15)
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1
Q

The body’s solvent is…..?

A

Water

2
Q

Why is oxygen needed by cells?

A

Oxygen is needed for cell respiration

3
Q

Carbon dioxide must be exhaled, because in excess it would…..?

A

Make body fluids too acidic

4
Q

What is the purpose of a buffer system?

A

Prevent drastic changes in pH

5
Q

What is glucose?

A

Glucose is a hexose sugar and a primary energy source for cells

6
Q

Where is excess or potential energy stored?

A

In skeletal muscles and the liver as glycogen

7
Q

Potential energy for cells is provided by…..?

A

Starches, lactose, and glycogen

8
Q

Why are oligosaccharides important?

A

Oligosaccharides are part of surface antigens that identify cells

9
Q

Why are triglycerides important?

A

Triglycerides are important for the storage of energy

10
Q

Fatty acids and glycerol are subunits of what?

A

Phospholipids

11
Q

Cholesterol is a precursor for what?

A

Vitamin D, which is needed for calcium metabolism

12
Q

What lipids are part of cell membranes?

A

Phospholipids and cholesterol

13
Q

What are the subunits of proteins?

A

Amino acids linked by peptide bonds

14
Q

What are enzymes?

A

All proteins, and they catalyze reactions

15
Q

Keratin is to skin as myoglobin is to what?

A

Muscles

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