Water & Macromolecules Quiz

Water & Macromolecules Quiz

15 Qs

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Water & Macromolecules Quiz

Water & Macromolecules Quiz

Assessment

Quiz

others

Practice Problem

Hard

Created by

Rebecca Kazio

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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

1. The image below shows a model of a water molecule. The center, red portion represents

an atom of hydrogen that has a positive charge.
an atom of oxygen that has a positive charge.
an atom of oxygen that has a negative charge.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

2. Which of the following best explains why a molecule of water is polar?

A molecule of water has two hydrogen atoms and one oxygen atom.
The electrons in the molecule are pulled toward the oxygen and away from the hydrogens. This results in a slightly negative charge on the oxygen side and a slightly positive charge on the hydrogen side.
There is not an equal number of oxygen atoms to hydrogen atoms. This makes the charges on the molecule uneven.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

3. Which property of water helps to maintain a constant, stable temperature on Earth?

capillary action
high specific heat
surface tension
universal solvent

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

4. Which explanation best explains how the properties of water are affecting this living thing?

The water molecules are polar. This creates cohesion and makes the molecules stick to the feet of the spider. This allows the spider to walk on the surface of water.
The hydrogen bonds between the water molecules create a property called surface tension. This makes the surface of water somewhat resistant to external forces and allows the spider to run across the water.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

5. An organic compound contains

carbon.
oxygen.
salt.
water.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

6. Water is often called the "universal solvent". One reason this is important to living things because -

it means water cools down very quickly.
water can't dissolve many other substances.
water is the solvent for blood, sweat, tears, and saliva
it allows Mr. Varner to make his sweet tea as sweet as possible. (DON'T PICK THIS ONE!!)

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

7. Choose all the apply. Which of the following are the FOUR major biomolecules?

carbohydrates
lipids
nucleic acids
proteins
acids

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