Cells receive all necessary nutrients and energy from their environment.

• true

• false

The majority of a cell's biochemical reactions occur in the:

• plasma membrane

• nucleus

• cytoplasm

• mitochondria

The nuclear membrane consists of a double phospholipid bilayer.

• true

• false

The proteins found in the phosopholipid bilayer of the plasma membrane contribute to:

• structure

• recognition and communication

• transportation

• all of the above

Which organelle is made in the nucleolus?

• mitochondria

• ribosomes

• lysosomes

• cytoskeleton

Chromatin is what we call DNA when the chromosomes are condensed and separated during cell division.

• true

• false

What is the location of cholesterol metabolism?

• rough endoplasmic reticulum

• smooth endoplasmic reticulum

• Golgi apparatus

• mitochondria

Which organelle is the garbage disposal/recycling center of the cell?

• ribosomes

• mitochondria

• peroxisomes

• lysosomes

The process by which mitochondria convert food energy into ATP energy is known as "cellular respiration."

• true

• false

Which are the "loosest" of the cellular junctions?

• desmosomes

• gap junctions

• tight junctions