61) When placed in solution, an inorganic substance dissociates completely, : 1200417

61) When placed in solution, an inorganic substance dissociates completely, : 1200417.


61) When placed in solution, an inorganic substance dissociates completely, forming hydrogen ions and anions. This substance would be a

A) strong base.

B) weak base.

C) strong acid.

D) weak acid.

E) salt.

62) Functionally, carbohydrates are most important as ________.

A) storage of glucose molecules

B) a part of nucleic acid structure

C) sources of energy

D) receptors of the cell surface

E) insulation under the skin

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

A) sucrose.

B) starch.

C) protein.

D) vitamin B12.

E) glucose.

64) Which of the following is an example of a disaccharide?

A) starch

B) glycogen

C) sucrose

D) cellulose

E) fructose

65) Identify the polysaccharide in the following list of molecules.

A) glycogen

B) sucrose

C) glucose

D) fructose

E) lactose

66) Determine which reaction is shown in the figure and specify its mechanism of action.

A) The addition of a water molecule breaks down a complex molecule.

B) The removal of a water molecule breaks down a complex molecule.

C) Ionic bonds are broken apart as individual ions interact with the positive or negative ends of polar water molecules.

D) The removal of a water molecule facilitates the union of two molecules.

E) The addition of a water molecule facilitates the union of two molecules.

67) The molecule shown in the figure is considered to be the most important metabolic “fuel” in the body. Choose the best category of molecules to which it belongs.

A) steroid

B) saturated fatty acid

C) monoglyceride

D) cholesterol

E) monosaccharide

68) Lipids are used for which of the following?

A) to form essential structural components of cells

B) to provide roughly 10 times as much energy as carbohydrates

C) to help reduce body temperature

D) to help protect the skeleton

E) to carry genetic information

69) A class of lipids used as chemical messengers, to signal cells to undergo changes, is called

A) polysaccharides.

B) phospholipids.

C) triglycerides.

D) steroids.

E) monoglycerides.

70) The group of organic compounds containing mostly carbon and hydrogen with small amounts of oxygen is defined as a(n)

A) carbohydrate.

B) lipid.

C) protein.

D) nucleic acid.

E) fatty acid.

71) A fatty acid that contains only single covalent bonds in its carbon chain is said to be

A) saturated.

B) polyunsaturated.

C) monounsaturated.

D) hydrogenated.

E) carboxylated.



61) When placed in solution, an inorganic substance dissociates completely, : 1200417

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