3.1 Concepts of Cellular Structure

1			_____________ cells are thin, flat, and often have a bulge where the nucleus is.
			A)	Polygonal
			B)	Spheroid
			C)	Stellate
			D)	Squamous
			E)	Columnar

3.2 The Cell Surface

2			Which structure increases cell surface area?
			A)	microtubules
			B)	microfilaments
			C)	microvilli
			D)	inclusions
3			The glycolipids and glycoproteins function to
			A)	increase cell surface area.
			B)	provide structural support to the cell.
			C)	confer each cell's unique identity or fingerprint.
			D)	increase membrane fluidity.
4			Which of the following structures is most closely related to moving particulate matter along the surface of epithelium?
			A)	flagella
			B)	cilia
			C)	microvilli
			D)	brush border

3.3 Membrane Transport

5			The larger particles do not move because
			A)	the concentration gradient is too small.
			B)	the concentration gradient is too large.
			C)	the membrane is impermeable.
			D)	the membrane is semipermeable.
6			Factors that affect the rate of diffusion through a membrane include
			A)	molecular weight of particle.
			B)	concentration gradient.
			C)	membrane permeability.
			D)	All of the above.
7			Which tonicity describes a solution that has a lower concentration of nonpermeating solutes than the intracellular fluid?
			A)	hypertonic
			B)	hypotonic
			C)	isotonic
			D)	heterotonic

3.4 The Cell Interior

8			Which of the following organelles can be compared to a power-house because it supplies the cell with energy?
			A)	Golgi complex
			B)	nucleus
			C)	mitochondria
			D)	chloroplast
9			The nucleus of the cell
			A)	is the site of RNA synthesis.
			B)	is the largest organelle in eukaryotes.
			C)	has a double membrane.
			D)	All of the above.
10			Endoplasmic reticulum can be smooth or rough. The rough endoplasmic reticulum is different from the smooth because it has _____ embedded in it.
			A)	ribosomes
			B)	lysosomes
			C)	peroxisomes
			D)	chromatin