Choose the best answer.

1			Which one of the following statements is not a part of the modern cell theory?
			A)	All living organisms are composed of cells and cell products.
			B)	Most cells come from the division of preexisting cells.
			C)	The cells from all species generally have the same basic chemical components and metabolic mechanisms.
			D)	The cell is the simplest structural and functional unit of life.
2			Which of the following terms regarding cell shape is NOT followed by its correct description?
			A)	fibrous—long and slender
			B)	squamous—disc-shaped
			C)	stellate—star-shaped
			D)	fusiform—spindle-shaped
3			Which one of these terms refers to fluid inside the cell?
			A)	interstitial fluid
			B)	extracellular fluid
			C)	intracellular fluid
			D)	tissue fluid
4			The plasma membrane is composed primarily of lipids.
			A)	True
			B)	False
5			Proteins that pass all the way through the membrane are called peripheral proteins.
			A)	True
			B)	False
6			Channel proteins allow water and hydrophilic solutes to pass through the membrane at all times.
			A)	True
			B)	False
7			These membrane proteins enable the body to distinguish self from non-self.
			A)	cell-adhesion molecules
			B)	receptors
			C)	enzymes
			D)	cell-identity markers
8			Which one of the following transport processes across the plasma membrane requires the cell to expend energy?
			A)	osmosis
			B)	facilitated diffusion
			C)	active transport
			D)	simple diffusion
9			The movement of particles with the concentration gradient does not require energy from the cell.
			A)	True
			B)	False
10			Which of the following vesicular transport processes moves material out of the cell?
			A)	phagocytosis
			B)	pinocytosis
			C)	receptor-mediated endocytosis
			D)	exocytosis
11			Which one of the following does not contain microtubules?
			A)	microvilli
			B)	cilia
			C)	flagella
			D)	centrioles
12			Axoneme is the motor protein that results in the bending of cilia and flagella.
			A)	True
			B)	False
13			The cytoskeleton provides a strong structural continuity from the extracellular material to the cytoplasm.
			A)	True
			B)	False
14			All cells have one and only one nucleus.
			A)	True
			B)	False
15			The nuclear membrane is a single unit membrane.
			A)	True
			B)	False
16			Large amounts of smooth endoplasmic reticulum are found in cells that synthesize large amounts of protein.
			A)	True
			B)	False
17			Antibiotics such as streptomycin which is thought to associate irreversibly with bacterial ribosomes destroy these bacteria by preventing the synthesis of lipids.
			A)	True
			B)	False
18			Tay-Sachs is a genetic disease that interferes with lysosomal enzyme production. As a result, which one of the following would be a likely consequence?
			A)	a disruption of cell division
			B)	a decrease in protein synthesis
			C)	a decrease in energy production
			D)	a buildup of materials normally removed and recycled
19			Hydrogen cyanide interferes with the enzymes located on the cristae within the mitochondria. As a result, which one of the following would be a likely consequence?
			A)	an increase in energy production
			B)	a decrease in energy production
			C)	no effect on energy production
20			Inclusions are enclosed in a unit membrane.
			A)	True
			B)	False
21			The length of the cell cycle is fairly constant from one cell type to another.
			A)	True
			B)	False
22			Which of the following is NOT a characteristic of cancer?
			A)	has a fibrous capsule
			B)	fast growth
			C)	capable of spreading to other organs
			D)	caused by mutations
23			Embryonic stem cells are capable of developing into any type of embryonic or adult cell. In other words, they are _________ .
			A)	unipotent
			B)	multipotent
			C)	pluripotent