Unit Test

Phospholipids have a -

• nonpolar head and a nonpolar tail.

• polar head and a polar tail.

• nonpolar head and a polar tail.

• polar head and a nonpolar tail.

Tags

NGSS.MS-PS1-1

Which of these best explains why a freshwater aquarium would be a dangerous habitat for saltwater (ocean) fish?

• The cells of the saltwater fish would gain too much water.

• The cells of the saltwater fish would absorb too much acid.

• The cells of the saltwater fish would produce too much protein.

• The cells of the saltwater fish would use too much energy.

The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell

• Certain things can enter while others cannot

• The cell manually sorts through all materials

Ideally, your cells should be in a(n) _______ solution to maintain equilibrium.

• isotonic

• hypertonic

• hypotonic

• isometric

Tags

NGSS.HS-LS1-3

____ is the molecule that provides energy for active transport.

• DNA

• ADP

• ATP

• RNA

Tags

NGSS.MS-LS1-7

If the diagrams show the particles of a single substance, which of the states in the diagram represents a liquid?

• State A

• State B

• State C

• State A and B

The arrow labeled #4 in the diagram represents which phase change?

• Melting

• Freezing

• Evaporating

• Depositing

Tags

NGSS.MS-PS1-4

Which two body systems work together to provide oxygen to muscle cells?

• circulatory and respiratory

• digestive and excretory

• nervous and skeleton

• respiratory and skeletal

In which components of the respiratory system are gases exchanged between the air and the blood?

• P

• Q

• R

• S

Which system of the body reacts to cause the fever and chills?

• digestive

• immune

• excretory

• respiratory