Quizzes: The cell membrane and the cell wall

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Webcytology was created for ThinkQuest 1999.

The cell membrane and the cell wall

What do scientists means when they say that the cell membrane is selectively permeable?
	1.	it is impervious to most substances
	2.	it only allows certain molecules to pass through
	3.	it is a very rigid structure
	4.	it cannot be replenished once it has grown to full size

The cell membrane consists mainly of
	1.	water and carbon dioxide
	2.	cellulose and pectins
	3.	phospholipids and proteins
	4.	actin and myosin

All cell walls found in prokaryotes contain
	1.	peptidoglycans
	2.	lipoproteins
	3.	lipopolysaccharides
	4.	phospholipids

The primary cell wall is the part of a eukaryotic cell wall which is
	1.	closest to the inside of the cell
	2.	in the middle of the cell wall
	3.	farthest outside of the cell
	4.	the strongest of the three layers

Which of the layers in a eukaryotic cell wall contains pectins?
	1.	the middle lamella
	2.	the secondary cell wall
	3.	the primary cell wall
	4.	none of the above

ThinkQuest Team #27819 - 27819@for.net
Team: Andrew Kallem, Josh Tauberer
Coaches: Ms. Acerra, Mr. Kwitkin