Question

In: Anatomy and Physiology

.....Each of the following is an example of an inorganic compound, except bases. rocks. salts. acids....

.....Each of the following is an example of an inorganic compound, except

bases.

rocks.

salts.

acids.

water.

A.... Carbohydrates, lipids, and proteins are classified as

		organic molecules.
		bases.
		acids.
		salts.
		inorganic molecules.

B .... Which of the following substances would be most acidic?

		white wine, pH = 3
		tomato juice, pH = 4
		urine, pH = 6
		lemon juice, pH = 2
		stomach secretions, pH = 1

C ... A(n) ________ removes hydrogen ions and a(n) ________ releases hydrogen ions.

		base; acid
		compound; element
		molecule; acid
		element; compound
		acid; base

D ... Because water has a high heat of vaporization it

		serves as an excellent lubricant
		participates in chemical reactions
		dissolves many substances
		provides an excellent cooling mechanism

E...If a substance has a pH that is greater than 7, it is

		acidic.
		a salt.
		a buffer.
		neutral.
		alkaline.

F ....The primary high energy molecule formed and used in the cell is

		ATP
		DNA
		glucose
		RNA

G...Hydrophilic molecules readily associate with

		water molecules.
		hydrophobic molecules.
		lipid molecules.
		both A and B
		all of the above

H...All of the following are true concerning enzymes, except that they

		have an active site
		are proteins.
		are consumed during the reaction.
		affect the rate of a chemical reaction.
		function as biological catalysts.

I....Which of the following statements about water is not correct?

		can dissolve many substances
		is responsible for much of the mass of the human body
		is composed of polar molecules
		contains hydrogen bonds
		has a relatively low heat capacity

Solutions

Expert Solution

Each of the following is an example of an inorganic compound, except

The correct answer is acids

Reason: acids are inorganic as well as organic. For example citric acid is an organic acid. Whereas hydrochloric acid is an inorganic acid.

Carbohydrates, lipids, and proteins are classified as

The correct answer is organic molecules

Reason: Carbohydrates are organic Molecules because they are made up of carbon.

Which of the following substances would be most acidic?

The correct answer is stomach secretions, pH = 1

Reason: The lower the pH, the more acid. The pH 1 represents highly acid solution.

A(n) ________ removes hydrogen ions and a(n) ________ releases hydrogen ions

The correct answer is base; acid

Because water has a high heat of vaporization it

The correct answer is provides an excellent cooling mechanism

If a substance has a pH that is greater than 7, it is

The correct answer is alkaline

Reason: pH below 7 is acidic, above 7 is alkaline and pH of 7 is considered as neutral.

The primary high energy molecule formed and used in the cell is

The correct answer is ATP.

Reason: The ATP is called the energy currency of the cell. It provides most of the energy to the cell.

Hydrophilic molecules readily associate with

The correct answer is water molecules

Reason: Hydro means water and philic means loving. Hence hydrophilic molecules associate closely with water.

All of the following are true concerning enzymes, except that they

The correct answer is - are consumed during the reaction

Reason: Enzymes increases the rate of reaction and they will not be used up in the reaction.

Which of the following statements about water is not correct?

The correct answer is - has a relatively low heat capacity

Reason: Water has high heat capacity. This allows the water to show anamolous expansion. This favors the aquatic animals to survive in a frozen sea or ocean.

Sydney Mullin answered 1 year ago

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