Chemistry of Life Quiz

The smallest basic unit of matter is the

• molecule.
• atom.
• compound.
• cell.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Atoms in molecules share pairs of electrons when they make

• covalent bonds.
• ionic bonds.
• hydrogen bonds.
• polymers.

Tags

NGSS.HS-PS1-2

The positively charged particle in an atom is called the

• neutron
• ion
• proton
• electron

Proteins are polymers formed from

• lipids
• carbohydrates
• amino acids
• nucleic acids

Tags

NGSS.HS-LS1-1

Proteins are polymers formed from

• lipids
• carbohydrates
• amino acids
• nucleic acids

Tags

NGSS.HS-LS1-1

An enzyme speeds up a reaction by

• lowering the activation energy
• raising the activation energy
• releasing energy
• absorbing energy

Which is considered neutral?

• pH of 4
• pH of 9
• pH of 14
• pH of 7

What does  the lock-and-key model state?

• any substrate can bind an enzyme 
• only specific amino acids can build carbohydrates 
• specific substrates bind specific enzymes 
•  nucleotides must fit like a lock and a key 

Household bleach has a pH of 12. Determine if it's an acid, base, or neutral.

• acid
• base
• neutral 

The energy needed to get a reaction started is called the

• reaction energy
• activation energy
• action energy
• red bull energy

Tags

NGSS.HS-PS1-4