Cells

Rigid outer structure that supports and shapes plant cells

• Cell membrane

• Cell wall

• Chloroplast

• Nucleus

Controls what enters and exits the cell

• cell wall

• cell membrane

• mitochondria

• lysosome

This organelle stores genetic material and controls the cell's activities

• vacuole

• ribosome

• nucleus

• Golgi

The cell wall of a plant helps the plant cell maintain its shape. What is the main structural component of the cell wall of a plant?

• lipid

• cellulose

• amino acid

• nucleic acid

Keratin is a protein found in hair. Where in a cell is keratin made?

• the nucleus

• the vacuole

• the ribosomes

• the mitochondria

What are the basic structural units of living organisms?

• cells

• nuclei

• organs

• tissues

Eukaryotic cells are differentiated from prokaryotic cells because eukaryotic cells

• are much smaller.

• have permeable membranes.

• have a higher rate of reproduction.

• have nuclei.

Which statement about plant and animal cells is true?

• Plant cells have a nucleus and a cell wall; animal cells do not have either of these structures.

• Plant cells have a cell wall and chloroplasts; animal cells do not have either of these structures.

• Plant cells have a cell wall and a cell membrane; animal cells have a cell wall but not a cell membrane.

• Plant cells have chloroplasts and mitochondria; animal cells have chloroplasts but do not have mitochondria.

A structure that performs a specialized function within a cell is known as

• a tissue

• an organelle

• an organ

• a system

What is the size of protein synthesis in plant cells?

• nuclei

• chromosomes

• vacuoles

• ribosomes