Water and Organic Molecules

1.

Multiple Choice

45 sec

1 pt

What are the 4 most abundant elements in living things?

hydrogen, oxygen, nitrogen, carbon

hydrogen, helium, oxygen, carbon

carbon, manganese, iron, hydrogen

2.

Multiple Choice

45 sec

1 pt

The element _______is found in all of the organic compounds.

Iron

Nitrogen

Carbon

Oxygen

3.

Multiple Choice

1 min

1 pt

___________ are many monomers bonded together that form a larger molecule.

Polymers

Monomers

Trinominers

DNA

4.

Multiple Choice

1 min

1 pt

DNA and RNA are examples of

Carbohydrates

Lipids

Proteins

Nucleic Acids

5.

Multiple Choice

1 min

1 pt

Nucleotides are the building blocks (monomers) of ______.

Carbohydrates

Lipids

Proteins

Nucleic Acids

6.

Multiple Choice

45 sec

1 pt

Another word for a building block is a __________________.

polymer

monomer

dimer

7.

Multiple Choice

20 sec

1 pt

Which biomolecule is responsible for insulation and energy storage?

Protein

Nucleic Acid

Lipid

Carbohydrate

8.

Multiple Choice

5 mins

1 pt

Which biomolecule contains fats, oils, and waxes?

Proteins

Nucleic Acid

Lipids

Carbohydrate

9.

Multiple Choice

1 min

1 pt

A biological molecule is analyzed, and it is discovered that the molecule is composed of several amino acids. Which of these identifies the biological molecule?

it is a lipid

it is a protein

it is an unsaturated fat

it is a monosaccharide

10.

Multiple Choice

45 sec

1 pt

Carbohydrates are made of which of the following elements?

C, H, O

C, H, O, N

C, H, O, N, P

11.

Multiple Choice

30 sec

1 pt

Which of the following properties of water enables it to move from the roots to the leaves of plants?

Water expands as it freezes.

Water is an excellent solvent.

Water exhibits cohesive behavior.

Water moderates temperature.

12.

Multiple Choice

45 sec

1 pt

What two elements make up water?

Helium and oxygen

Hydrogen and oxygen

helium and carbon

oxygen and carbon

13.

Multiple Choice

1 min

1 pt

Why can water have no net charge but have slight charges in different parts of the molecule?

The oxygen end is slightly negative and the hydrogen end is slightly positive

The hydrogen end is slightly negative and the oxygen end is slightly positive

The hydrogen and oxygen ends change in polarity

Because it is hydrophobic

14.

Multiple Choice

45 sec

1 pt

Attractions between water molecules are called

Covalent bonds

Ionic bonds

Polar bonds

Hydrogen bonds

15.

Multiple Choice

1 min

1 pt

Which is NOT a unique property of water?

Frozen water floats on liquid water.

Water covers most of the Earth’s surface and retains a large amount of heat.

Water molecules stick to each other through hydrogen bonds.

Water cools very rapidly.

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