Exploring Human Body Cells, Tissues, and Skin

What is the smallest unit of life that can perform all life processes?

• Molecules

• Organs

• Tissues

• Cells

What term describes the cell membrane's ability to allow some particles through but not others?

• Permeable

• Fully permeable

• Impermeable

• Selectively permeable

Which process describes the movement of particles from an area of higher concentration to one of lower concentration?

• Osmosis

• Diffusion

• Filtration

• Active transport

Which process involves water moving across a semipermeable membrane from an area of low solute concentration to high?

• Active transport

• Filtration

• Osmosis

• Diffusion

What is the main energy currency of a cell?

• DNA

• ATP

• Glucose

• RNA

What is the function of ribosomes attached to the rough ER?

• Lipid manufacture

• Protein synthesis

• DNA replication

• Cellular respiration

What is the primary function of the Golgi apparatus?

• Protein synthesis

• Detoxification

• Protein packaging and transport

• Cell division

What is the main difference between simple diffusion and facilitated diffusion?

• Facilitated diffusion doesn't involve a concentration gradient

• Facilitated diffusion requires energy

• Simple diffusion requires energy

• Simple diffusion doesn't require a membrane protein

Which type of tissue covers body surfaces and lines most internal cavities?

• Epithelial tissue

• Connective tissue

• Nervous tissue

• Muscle tissue

Which layer of the skin synthesizes vitamin D in the presence of sunlight?

• Stratum basale

• Epidermis

• Dermis

• Stratum corneum