Anatomy and Physiology Cell Biology

Which of the following is a fundamental concept of cell biology?

• Cells are non-living structures

• Cell theory is a recent scientific discovery

• Cells are composed of four major elements

• All cells have the same structure and function

What is the Cell Theory?

• A theory stating that cells are non-essential for life

• A theory that claims all living organisms are composed of cells

• A theory explaining the formation of cell membranes

• A theory suggesting that cells don't require energy to function

What are the four major elements that cells are composed of?

• Hydrogen, Helium, Carbon, Oxygen

• Carbon, Hydrogen, Nitrogen, Oxygen

• Sodium, Potassium, Chlorine, Magnesium

• Iron, Copper, Zinc, Calcium

Which of the following is NOT one of the three main regions of a typical cell?

• Nucleus

• Cytoplasm

• Cell Wall

• Plasma Membrane

What is the primary function of the phospholipid bilayer in the cell membrane?

• Energy production

• Support and protection

• Regulating the passage of substances in and out of the cell

• DNA storage

Which of the following is a type of membrane junction that provides mechanical stability to tissues?

• Tight junctions

• Gap junctions

• Desmosomes

• Plasmodesmata

Active transport processes in cells generally require:

• No energy input

• Energy input in the form of ATP

• Passive diffusion

• Facilitated diffusion

Passive transport, such as diffusion, does NOT require:

• Energy input

• A concentration gradient

• Specific transport proteins

• A semi-permeable membrane

What is the main function of the cell nucleus?

• Protein synthesis

• Energy production

• DNA storage and regulation

• Lipid synthesis

Which cellular structure contains enzymes for intracellular digestion?

• Mitochondria

• Golgi body

• Lysosomes

• Nucleus