Self Check 2

Question 1

​Which statement is true of organic molecules?
​A)​organic molecules always contain carbon and hydrogen atoms
​B)​organic molecules are usually formed of micromolecules
​C)​organic molecules include both vitamins and minerals
​D)​organic molecules only include the macromolecules carbohydrates and fats

Answer 1

A

Question 2

​Which statement best describes fibre?
​A)​fibre acts as roughage
​B)​fibre cannot be digested by the body
​C)​fibre is a polysaccharide
​D)​all of the above

Answer 2

D

Question 3

Which statement best describes cellulose?
​A)​is a lipid
​B)​is found in animal cells
​C)​is not digested by humans
​D)​is used as an energy source

Answer 3

C

Question 4

​Which one of these molecules is NOT considered to be a lipid?
​A)​cellulose
​B)​cholesterol
​C)​oils
​D)​steroids

Answer 4

A

Question 5

​How do phospholipids differ from other lipids?
​A)​phospholipids are formed of only two fatty acids
​B)​phospholipids are found only in the plasma membrane
​C)​phospholipids are not used as a source of energy
​D)​all of the above

Answer 5

D

Question 6

​Which statement about fats is false?
​A)​fats can be emulsified by bile
​B)​fats contain two fatty acids and a glycerol molecule
​C)​fats are solid at room temperature
​D)​fats are sometimes called triglycerides

Answer 6

B

Question 7

​Which one of these is NOT a steroid?
​A)​cholesterol
​B)​phospholipids
​C)​testosterone
​D)​estrogen

Answer 7

B

Question 8

9.​How do proteins differ from carbohydrates and fats?
​A)​proteins cannot be stored in the body
​B)​proteins contain nitrogen
​C)​the main purpose of proteins is to be used to build structures
​D)​all of the above

Answer 8

D

Question 9

​Which is NOT a characteristic of proteins?
​A)​proteins are commonly hydrogenated to change their form
​B)​proteins are formed of amino acid subunits
​C)​proteins are macromolecules necessary for life
​D)​proteins if exposed to extremes in heat or pH, may change their shape

Answer 9

A

Question 10

11.​Which statement is true of essential amino acids?
​A)​essential amino acids can be produced by the body
​B)​essential amino acids can only be supplied through the diet
​C)​plant protein is a good source of all the essential amino acids
​D)​the absence of an essential amino acid does not affect the use of the other amino acids

Answer 10

B

Question 11

​Which one of the following foods is NOT a complete protein?
​A)​cheese
​B)​eggs
​C)​legumes
​D)​meat

Answer 11

C

Question 12

13.​Which statement(s) describes vitamins?
​A)​are inorganic compounds
​B)​are required in small amounts in the body
​C)​are used over and over again
​D)​B and C

Answer 12

D

Question 13

​Which statement(s) describes minerals?
​A)​are inorganic compounds
​B)​are required in small amounts in the body
​C)​are parts of cells and tissues
​D)​all of the above

Answer 13

D

Question 14

​Which of the following is NOT true of carbohydrates?
​A)​carbohydrates are divided into two main categories; simple and complex
​B)​carbohydrates are inorganic molecules
​C)​carbohydrates are the primary source of energy in the body
​D)​carbohydrates include glucose and glycogen

Answer 14

B