Ch. 7 Study Guide

Multiple Choice
Identify the choice that best completes the statement or answers the question.

____	1.	What type of organisms might contain this cell? 
a.	algea	c.	bacterium	
b.	fungi	d.	plant	

____	2.	Cells may have different shapes and different amounts of organelles, depending on
their function. Which features do plant cells have that animal cells lack?
a.	chloroplast, ribosome, and cell wall	c.	cell wall, chloroplast, and central vacuole	
b.	Golgi apparatus, cytoskeleton, and vesicle	d.	central vacuole, chloroplast, and smooth ER	

____	3.	The Dutch scientist Anton van Leeuwenhoek used a microscope that made objects
appear 300 times as large as they were. If a cell appeared to be 6 mm long under the
microscope, how long was the cell in real life?
a.	0.02 mm	c.	0.20 mm	
b.	0.05 mm 	d.	0.50 mm	

____	4.	Which type(s) of cells have genetic material that is contained in a nucleus?
a.	bacteria	c.	protists	
b.	only animal cells	d.	both plant and animal cells	

____	5.	Which cell structure is correctly paired with its primary function? 
a.	ribosome - protein synthesis	c.	 vacuole - cell division	
b.	mitochondrion - movement	d.	nucleus - storage of nutrients	

____	6.	The cell membrane of the red blood cell will allow water, oxygen, and carbon dioxide to pass through. Because other substances are blocked from entering, this membrane is called
a.	perforated	c.	non-conductive	
b.	semi-permeable	d.	permeable	

____	7.	Which invention from the 17th century allowed for the development of modern cell theory? 
a.	x-rays	c.	computer	
b.	light microscope	d.	scanning electron microscope	

____	8.	Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?
a.	All living things are made of cells.	c.	Cells form through spontaneous generation.	
b.	All cells come from other preexisting cells.	d.	Cells are the basic structural and functional units of life. 	

____	9.	In the human body, the circulatory system transports and delivers substances. Within the cell, which organelle performs a similar function?
a.	Nucleus	c.	Mitochondrion	
b.	Golgi apparatus	d.	Endoplasmic reticulum	

____	10.	The above diagram shows the process
of osmosis. Only the water molecules could enter the cell because water molecules ? 
a.	have more energy than the protein
molecules	c.	are more numerous than the protein
molecules	
b.	are smaller than the protein molecules	d.	contain more hydrogen atoms than the
protein molecules	

____	11.	Which of these is capable of moving quickly in response to its environment?
a.		c.		
b.		d.		

____	12.	Which of these functions most like the “brain” of a cell?
a.	The nucleus	c.	The mitochondrion	
b.	The Golgi apparatus	d.	The smooth endoplasmic reticulum	

____	13.	Which of these statements best summarizes the cell theory?
a.	Cells contain a nucleus and other parts.	c.	Cells can be seen through a microscope.	
b.	Cells come in different shapes and sizes.	d.	Cells are the building blocks of living
things.	

____	14.	
a.	cell walls	c.	cell membranes	
b.	nuclei	d.	mitochondria	

____	15.	
a.		c.		
b.		d.