Question 1
All living organisms contain carbon atoms. Which of the following is an important characteristic of carbon?

Question 1 options:

Carbon atoms are highly reactive and form unstable bonds with any available atom.

Carbon atoms can bond with any other atom, but they cannot form bonds with other carbon atoms

Carbon atoms are very stable and do not easily form bonds with other atoms

Carbon atoms can bond with many other kinds of atoms to form very stable molecules.

Question 2
Any chemical that contains carbon bonded to at least one other atom, usually hydrogen, is known as a

Question 2 options:

Carbohydrate

Fatty Acid

Organic Molecule

Question 3
How many valence electrons are generally needed to fill the outer shell of most atoms?

Question 3 options:

4

6

8

Question 4
The macromolecules in biochemistry are proteins, carbohydrates, lipids and nucleic acids. What main elements do all of have in common?

Question 4 options:

Carbon and Sulfur

Carbon and Hydrogen

Oxygen and Nitrogen

Oxygen and Phosphorus

1 - Carbon atoms can bond with many other kinds of atoms to form very stable molecules. 2 - organic molecules . 3 - 8 (full shell) . 4 - i'd say Carbon and Hydrogen

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kmatras1 kmatras1 · Answer 2 · 2017-02-17T15:53:22+01:00

1. The correct answer is 4. Carbon can bond to 4 other atoms, exponentially increasing its ability to make different molecules.

2. The correct answer is 3. An organic compound (or molecule) is any atom (usually hydrogen) that bonds with carbon.

3. The correct answer is the third option (8 electrons). Valence electrons in the outer shell are those can form a chemical bond. When (most) atoms have 8 electrons in their outer shell, they are then considered to have maximum stability.

4. The correct answer is 2. These macromolecules all contain carbon and hydrogen, making them organic compounds.