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Flashcards in week 4 Deck (26):
1

1) The four elements making up about 96% of the body's mass are represented by the symbols:

A) O, Ca, H, Na
B) O, C, H, N
C) O, C, He, Na
D) O, H, K, N
E) O, Ca, H, Ni

1) The four elements making up about 96% of the body's mass are represented by the symbols:

A) O, Ca, H, Na
B) O, C, H, N *
C) O, C, He, Na
D) O, H, K, N
E) O, Ca, H, Ni

2

2) Carbohydrates, lipids, and proteins are classified as

A) organic molecules.
B) inorganic molecules.
C) acids.
D) salts.
E) bases.

2) Carbohydrates, lipids, and proteins are classified as

A) organic molecules. *
B) inorganic molecules.
C) acids.
D) salts.
E) bases.

3

3) An example of an inorganic substance is

A) fructose.
B) water.
C) lipid.
D) glycogen.
E) cholesterol.

3) An example of an inorganic substance is

A) fructose.
B) water. *
C) lipid.
D) glycogen.
E) cholesterol.

4

A) are integral molecules of the cell membrane.
B) form the regulatory molecules known as enzymes.
C) are the body’s most readily available source of energy.
D) are composed of C, H, O, and N atoms.
E) contain the genetic information found in cells.

A) are integral molecules of the cell membrane.
B) form the regulatory molecules known as enzymes.
C) are the body’s most readily available source of energy. *
D) are composed of C, H, O, and N atoms.
E) contain the genetic information found in cells.

5

5) The most important metabolic fuel molecule in the body is

A) sucrose.
B) starch.
C) protein.
D) vitamins.
E) glucose.

5) The most important metabolic fuel molecule in the body is

A) sucrose.
B) starch.
C) protein.
D) vitamins.
E) glucose. *

6

6) A polysaccharide that is formed in liver and muscle cells to store glucose is

A) starch.
B) cellulose.
C) glycogen.
D) sucrose.
E) fructose.

6) A polysaccharide that is formed in liver and muscle cells to store glucose is

A) starch.
B) cellulose.
C) glycogen. *
D) sucrose.
E) fructose.

7

7) The group of organic compounds containing carbon, hydrogen, and oxygen in a near 1:2:1 ratio is defined as a

A) carbohydrate.
B) lipid.
C) protein.
D) nucleic acid.
E) both C and D

7) The group of organic compounds containing carbon, hydrogen, and oxygen in a near 1:2:1 ratio is defined as a

A) carbohydrate. *
B) lipid.
C) protein.
D) nucleic acid.
E) both C and D

8

8) An example of a polysaccharide stored in humans is

A) cellulose.
B) lactose.
C) glucose.
D) glycogen.
E) mannose

8) An example of a polysaccharide stored in humans is

A) cellulose.
B) lactose.
C) glucose.
D) glycogen. *
E) mannose

9

9) When two monosaccharides undergo a dehydration synthesis,
A) a new monosaccharide is formed.
B) a disaccharide is formed.
C) a polysaccharide is formed.
D) a starch is formed.
E) hydrolysis occurs.

9) When two monosaccharides undergo a dehydration synthesis,
A) a new monosaccharide is formed.
B) a disaccharide is formed. *
C) a polysaccharide is formed.
D) a starch is formed.
E) hydrolysis occurs.

10

10) Lipids

A) form essential structural components of cells.
B) provide roughly twice the energy as carbohydrates.
C) help to maintain body temperature.
D) all of the above
E) B and C only

10) Lipids

A) form essential structural components of cells.
B) provide roughly twice the energy as carbohydrates.
C) help to maintain body temperature.
D) all of the above
E) B and C only *

11


11) A fatty acid that contains three double covalent bonds in its carbon chain is said to be

A) saturated.
B) monounsaturated.
C) polyunsaturated.
D) hydrogenated.
E) carboxylated.


11) A fatty acid that contains three double covalent bonds in its carbon chain is said to be

A) saturated.
B) monounsaturated.
C) polyunsaturated. *
D) hydrogenated.
E) carboxylated.

12

12) Most of the fat found in the human body is in the form of

A) steroids.
B) phospholipids.
C) triglycerides.
D) prostaglandins.
E) monoglycerides.

12) Most of the fat found in the human body is in the form of

A) steroids.
B) phospholipids.
C) triglycerides. *
D) prostaglandins.
E) monoglycerides.

13

13) Glycerol is the backbone molecule for:

A) disaccharides.
B) DNA.
C) peptides.
D) triglycerides.
E) ATP.

13) Glycerol is the backbone molecule for:

A) disaccharides.
B) DNA.
C) peptides.
D) triglycerides. *
E) ATP.

14

14) A fatty acid with only single covalent bonds is said to be:

A) oxidized.
B) reduced.
C) saturated.
D) denatured.
E) hydrolyzed.

14) A fatty acid with only single covalent bonds is said to be:

A) oxidized.
B) reduced.
C) saturated. *
D) denatured.
E) hydrolyzed.

15

15) Cholesterol, phospholipids, and glycolipids are examples of

A) dietary fats.
B) prostaglandins.
C) structural lipids.
D) lipid drugs.
E) steroids.

15) Cholesterol, phospholipids, and glycolipids are examples of

A) dietary fats.
B) prostaglandins.
C) structural lipids. *
D) lipid drugs.
E) steroids.

16

16) A shortage of cholesterol in the body would interfere with the formation of

A) sex hormones.
B) proteins.
C) nucleic acids.
D) glycogen.
E) both A and C.

16) A shortage of cholesterol in the body would interfere with the formation of

A) sex hormones. *
B) proteins.
C) nucleic acids.
D) glycogen.
E) both A and C.

17

17. A(n) _____ accepts hydroxide ions in water and a(n) _____ releases hydrogen ions in water.
A) acid; base
B) base; acid
C) compound; element
D) element; compound

17. A(n) _____ accepts hydroxide ions in water and a(n) _____ releases hydrogen ions in water.
A) acid; base
B) base; acid *
C) compound; element
D) element; compound

18

Short Answer Questions. (Please answer each question in the space provided)
18) Ions with a positive charge are called __________.

Short Answer Questions. (Please answer each question in the space provided)
18) Ions with a positive charge are called __________.
Answer: cations

19

19) Ions with a negative charge are called _________.

19) Ions with a negative charge are called _________.
Answer: anions

20

20) ______________ molecules are compounds that contain carbon as the primary structural atom.

20) ______________ molecules are compounds that contain carbon as the primary structural atom.
Answer: Organic

21

21) A(n) ______________ is a homogeneous mixture containing a solvent and a solute.

21) A(n) ______________ is a homogeneous mixture containing a solvent and a solute.
Answer: solution

22

22) Molecules that readily dissolve in water are called _____.

22) Molecules that readily dissolve in water are called _____.
Answer: hydrophilic

23

23) Glycogen and starch are examples of complex carbohydrates called _____________________.

23) Glycogen and starch are examples of complex carbohydrates called _____________________.
Answer: polysaccharides

24

24) _________________ fats are triglycerides that contain only single covalent bonds between carbon atoms.

24) _________________ fats are triglycerides that contain only single covalent bonds between carbon atoms.
Answer: Saturated

25

25) The _____ of a solution is the negative logarithm of the hydrogen ion concentration expressed in moles per liter in the solution.

25) The _____ of a solution is the negative logarithm of the hydrogen ion concentration expressed in moles per liter in the solution.
Answer: pH

26

26) ___________________ are lipid molecules that form biological membranes.

26) ___________________ are lipid molecules that form biological membranes.
Answer: Structural lipids (or phospholipids)