Biology Semester Exam Review

Which biomolecule has sugars and starches?

• Lipids
• Proteins
• Carbohydrates
• Nucleic Acid

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

What biomolecule do enzymes belong to? 

• Carbohydrate
• Lipid
• Nucleic Acid
• Protein

surrounds the cell; regulates what enters/leaves cell; maintains homeostasis

• vacuole
• cell wall
• cell membrane
• lysosome

control the cell's activities; contains the cell's DNA

• mitochondria
• cell membrane
• nucleus
• golgi body

What is the main difference between prokaryotic and eukaryotic cells?

• Prokaryotic cells have a nucleus and Eukaryotic cells do not
• Prokaryotic cells are unicellular and Eukaryotic cells are multicellular.
• Prokaryotic cells do not have a nucleus, Eukaryotic cells do have a nucleus.
• Prokaryotic cells are plant cells and Eukaryotic cells are animal cells.

The main function of chloroplasts is:

• To control what enters and leaves the cell.
• To break down food to release energy for the cell.
• To control all activities of the cell.
• To produce food for the cell using the sun's energy.

Which statement is NOT part of the Cell Theory?

• Only animals are made of cells.
• Cells are the basic unit of structure and function in all living things.
• All living things are made of cells.
• New cells come from existing cells.

A substance that speeds up the rate of a chemical reaction is called

• catalyst
• lipid
• molecule
• element

Enzymes affect the reactions in living cells by changing the

• products of the reaction
• speed of the reaction
• temperature of the reaction
• pH of the reaction