Biochemistry

The smallest and basic unit of matter is

• molecule

• atom

• compound

• cell

Which two elements are present in all living things

• hydrogen

• nitrogen

• sulfur

• carbon

Tags

NGSS.HS-LS1-6

Which is an example of an organic substance?

• C6H12O6

• H2O

• NH3

• O2

Tags

NGSS.HS-LS1-6

Which is an example of an inorganic compound?

• glucose

• maltase

• water

• starch

The atomic number of an atom is equivalent to the number of

• protons

• neutrons

• protons and electrons

• protons and neutrons

The atomic mass of an atom is made up of

• the protons and electrons

• protons only

• electrons only

• the protons and neutrons

Tags

NGSS.HS-PS1-7

The bond between hydrogen and negatively charged atoms, such as oxygen of water is

• a covalent bond

• an ionic bond

• a hydrogen bond

• a double bond

Two or more atoms in molecules that share one or more pairs of electrons form

• covalent bond

• ionic bonds

• hydrogen bonds

• polymers

Tags

NGSS.HS-PS1-1

The bond formed between one water molecules hydrogen and oxygen is a

• covalent bond

• ionic bond

• hydrogen bond

• polymer

Tags

NGSS.HS-PS1-1

The bond formed between two water molecules hydrogen and oxygen is a

• covalent bond

• ionic bond

• hydrogen bond

• polymer