Building Blocks of Life (part 1)

What forms can organic compounds take?

• Gases, liquids, solids

• Straight chains, branching molecules, rings

• Acids, bases, salts

• Metals, nonmetals, metalloids

Why is all life considered carbon-based?

• Carbon is the most abundant element on Earth

• Almost all biological molecules contain carbon

• Carbon is a metal

• Carbon is a gas

Tags

NGSS.HS-LS1-6

Which of the following is NOT a form of organic compound?

• Straight chains

• Branching molecules

• Rings

• Crystals

Tags

NGSS.HS-LS1-6

What is the first step in calculating the percentage of a carbon atom's second energy level?

• Multiply by 100%

• Determine the number of electrons in the second energy level

• Divide by the total number of electrons

• Subtract the number of protons

How many electrons are in the second energy level of a carbon atom?

• 2

• 4

• 6

• 8

What operation is performed after determining the number of electrons in the second energy level?

• Subtract from the total number of electrons

• Multiply by 100%

• Divide by the total number of electrons

• Add to the total number of electrons

What is the final step in calculating the percentage of a carbon atom's second energy level?

• Subtract from 100%

• Multiply by 100%

• Divide by 100%

• Add 100%

What is the percentage of electrons in the second energy level of a carbon atom?

• 50%

• 66.67%

• 75%

• 80%

Which step involves using the total number of electrons in a carbon atom?

• Determining the number of electrons in the second energy level

• Dividing by the total number of electrons

• Multiplying by 100%

• Subtracting from the total number of electrons

What are macromolecules?

• Small molecules that are formed by breaking larger molecules

• Large molecules that are formed by joining smaller molecules together

• Molecules that are formed by joining atoms

• Small molecules that are formed by joining atoms

Tags

NGSS.HS-LS1-1