Which statement is a fundamental principle of the cell theory?

• All cells have a cell membrane (plasma membrane)
• Eukaryotic cells are larger than prokaryotic cells
• Living organisms are composed of cells
• The genetic material in cells is DNA

Which statement is true about bacterial cells?

• The cells are very large
• The cells have no nucleus
• The are eukaryotes
• They have organelles

Which is present only in eukaryotic cells?

• cell membrane
• cytoplasm
• DNA
• nucleus

Which organelle converts sugars into energy?

• lysosome
• mitochondria
• nucleus
• ribsome

A scientist at the polar ice cap was studying an ice sample from 100 meters below the surface.  He noticed the cell structures of cytoskeleton, mitochondria, nucleus, cell wall and ribosomes.  What kind of organism did he find?

• animal
• bacteria
• plant
• not enough info

Some cells, such as human nerve and muscle cells, contain many more mitochondria than do other cells, such as skin cells.  Why do some cells have more mitochondria than others?

• The cells use more energy
• The cells store more nutrients
• The cells degrade more proteins
• The cells divide more frequently

A cell with numerous ribosomes is probably specialized for 

• enzyme storage
• energy production
• cell division

• protein synthesis

All cells must have a

• cell wall
• cell membrane
• nucleus
• nucleoli

The main difference between prokaryotic and eukaryotic cells is that

• prokaryotic cells are always larger
• prokaryotic cells do not have a cell membrane
• eukaryotic cells have a smaller cell nucleus
• eukaryotic cells have a more advanced cellular organization

A cell stores food, water or waste products in

• chloroplast
• nuclei
• ribosomes
• vacuole