Choose the best answer.

1			Which 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—biconcave and 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			Name the membrane proteins that enable the body to distinguish self from non-self.
			A)	cell-adhesion molecules
			B)	receptors
			C)	enzymes
			D)	cell-identity markers
5			Which of the following membrane transport processes requires the cell to expend energy?
			A)	osmosis
			B)	facilitated diffusion
			C)	active transport
			D)	simple diffusion
6			Which of the following vesicular transport processes moves material out of the cell?
			A)	phagocytosis
			B)	pinocytosis
			C)	receptor-mediated endocytosis
			D)	exocytosis
7			Which of the following does NOT contain microtubules?
			A)	microvilli
			B)	cilia
			C)	flagella
			D)	centrioles
8			The ________________________ provides a strong structural continuity from the extracellular material to the cytoplasm.
			A)	cell membrane
			B)	cytoskeleton
			C)	nucleus
			D)	inclusions
9			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
			D)	semipotent
10			The bending of cilia and flagella is due mostly to which motor protein?
			A)	axoneme
			B)	actin
			C)	myosin
			D)	dynein
11			The light microscope is lacking in its ability to show details. In other words, it is limited in its ________________.
			A)	light transmission
			B)	resolution
			C)	phase contrast
			D)	color accuracy
12			Chromosomes are composed of ________________.
			A)	DNA and protein
			B)	lipids only
			C)	lipids and carbohydrates
			D)	glycoproteins
13			About 75% of the lipids in the plasma membrane are _____________________.
			A)	cholesterol
			B)	glycolipids
			C)	lipoproteins
			D)	phospholipids
14			Which is NOT a type of cell junction?
			A)	desmosome
			B)	tight junction
			C)	ribosomal junction
			D)	gap junction
15			Which organelle consists of stacks of flattened sacs that synthesize carbohydrates and modify, store, and/or package proteins?
			A)	mitochondria
			B)	Golgi complex
			C)	endoplasmic reticulum
			D)	lysosomes
16			Which organelle has large pores in its plasma membrane or envelope?
			A)	nucleus
			B)	mitochondrion
			C)	Golgi complex
			D)	endoplasmic reticulum
17			Ribosomes are used by the cell to make _______________.
			A)	proteins
			B)	lipids
			C)	carbohydrates
			D)	messenger RNA
18			This structure can come in a "rough" or "smooth" type. What is it called?
			A)	ribosomes
			B)	Golgi complex
			C)	peroxisome
			D)	endoplasmic reticulum
19			Which organelle is the major site of ATP production in the cell?
			A)	mitochondrion
			B)	peroxisome
			C)	centriole
			D)	endoplasmic reticulum
20			The periodic division of a cell into two daughter cells is called ________________.
			A)	mitosis
			B)	inclusions
			C)	lysis
			D)	meiosis
21			The normal movement in a cell has molecules moving from a higher concentration to a lower concentration. This movement is called _________________.
			A)	active transport
			B)	cotransport
			C)	diffusion
			D)	facilitated transport
22			The plasma membrane is composed mostly of two layers of ______________________.
			A)	lipids
			B)	proteins
			C)	carbohydrates
			D)	cholesterol
23			What structures allow water and hydrophilic solutions to pass through the plasma membrane?
			A)	channel proteins
			B)	glycoproteins
			C)	lipoproteins
			D)	cholesterol
24			Pinocytosis and phagocytosis are forms of ________________.
			A)	facilitated diffusion
			B)	endocytosis
			C)	exocytosis
			D)	the sodium-potassium pump
25			Which of the following is NOT a surface extension of a cell?
			A)	microvilli
			B)	cilia
			C)	microtubules
			D)	flagella