Unit 2 Review MS

Front

What is polarity?

Back

Polarity is the property of having an uneven distribution of electrons, resulting in a molecule having a positive end and a negative end.

Front

What type of bond holds multiple water molecules together?

Back

Hydrogen bonds hold multiple water molecules together.

Front

What is an osmoregulator?

Back

An osmoregulator is an organism that maintains a stable internal environment, regardless of external conditions.

Front

Is cold and fresh water more dense than cold and salty water?

Back

False. Cold and salty water is denser than cold and fresh water.

Front

What is osmosis?

Back

Osmosis is the diffusion of water through a semi-permeable membrane.

Front

What is cohesion?

Back

Cohesion is the attraction between molecules of the same substance, which causes them to stick together.

Front

What is adhesion?

Back

Adhesion is the attraction between molecules of different substances.

Front

What are covalent bonds?

Back

Covalent bonds are chemical bonds formed when two atoms share electrons.

Front

What are peptide bonds?

Back

Peptide bonds are the chemical bonds that link amino acids together in proteins.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.