SC 135 - Third Exam Fall 2004

MULTIPLE CHOICE.

On the line to the left, place the letter of the choice that best answers the question.
Three Points Each. NOTE: "e" answers are never the correct answer.

            1. Chromatin is

_______       a. What captures light energy during photosynthesis                b. A cellular digestive enzyme
                    c. The material in most cell walls                                          d. A complex of DNA wrapped around proteins
                                                    e. What really cheap jewelry is made of
 


            2. Which help things move inside a cell?

_______       a. Cilia & flagella                    b. Microtubules & endoplasmic reticulum                    c. Chromosomes & mitochondria
                    d. Nucleolus & vesicles                                e. Levers & pulleys
 


            3. Which type of microscope always passes its imaging beams through specimens?

_______       a. Transmission             b. Electron             c. Light            d. Scanning             e. The beam-passing kind
 


            4. Which is the most logical feature of a cell whose main function is absorption?

_______       a. Cell wall             b. Lysosomes             c. Cilia            d. Microvilli             e. It's very self-absorbed
 


            5. Which class of organic compound has the closest link between the function of the molecule and the overall shape of the molecule?

_______       a. Phospholipid             b. Protein             c. Starch            d. RNA             e. Lumpycules
 


            6. Two components of cytoskeleton -

_______       a. Microtubules & microfilaments            b. Microcables & microstruts            c. Microligaments & microtendons
                    d. Cytoplasm & cell membrane                                e. Well, they all look might tasty...


            7. Proteins are made from genetic code in the

_______       a. Nucleus             b. Ribosome             c. Golgi bodies            d. Nucleolus             e. Closet
 


            8. The nuclear envelope is called that because it

_______       a. Is folded over                b. Is a regular membrane in a special place                c. Is two membranes thick
                    d. Is a special delivery of the golgi bodies                    e. Always arrives just after its deadlines

 

            9. Which structures have a lot of RNA in them?

_______       a. Mitochondrion & chloroplast             b. Lysosome & chromosome            c. Nucleolus & ribosome
                    d. Flagella & cilia                                                                    e. The gooey ones
 


            10. High chromosome numbers can produce problems during

_______       a. Cell division             b. DNA copying            c. RNA production             d. Expressing genes            e. Assignment of jersey numbers
 


            11. Animal cells lack cell walls because they need

_______       a. More protection             b. Better transfer of nutrients            c. Less protection             d. Freer movement
                                                                            e. To use the wall money for video games
 


            12. In a ______ reaction, the ______ reaction feeds energy into the _______ reaction.

_______       a. Linked...exergonic...endergonic            b. Linked...endergonic...exergonic            c. Coupled...exergonic...endergonic
                    d. Coupled...endergonic...exergonic                        e. Relationship...dumb male...outraged female

 


SHORT ANSWER.

Answer any eight of the following questions for 4 Points Each.
Note: if you answer more than eight, only the first eight will be corrected.
You can get partial credit on these answers.
 

1. Briefly explain the theory that explains why cells seem to have an upper limit on size.
 

 
2. What is it about mitochondrial DNA that makes it simpler to use in evolutionary studies than nuclear DNA?
 

 
3. What is an allele?
 

 
4. Show the basic reaction of photosynthesis. You can spell out the molecules involved.
 

 
5. Label with the general terms of a chemical reaction -

            A             +             B                       Enzyme        >             C             +             D


      ---------------          ---------------           -----------------             ----------------            -----------------
6. Why do light microscopes hit a resolution limit at around 1200X magnification?
 

 
7. What are two cell organelles that would be more numerous in cells that produce secretions?
 

 

  
8. For either of the first two Laws of Thermodynamics -
Name
or
Number		 Define
9. In the fluid mosaic model of the cell membrane, explain what's meant by -
The
fluid
part? 		The
mosaic
part?
10. What are two different types of vesicles or vacuoles?
 

 

  
11. What is the technical definition of a gene?
 

 
12. Show the basic reaction of how ATP is made -
 

 
13. What are two different advantages that light microscopes have over electron microscopes?
 

 

  
14. What are two different parts that all cells, no matter the type, have in common?
 

 

  
15. What are two different features that cilia and flagella have in common?
 

 

  



LONG ANSWER.

Answer any four of the following questions for Eight Points Each.
Note: if you answer more than four, only the first four will be corrected.
You can get partial credit on these answers.
 

1. Two features prokaryotes have that eukaryotes do have - Two features eukaryotes have that prokaryotes do not have -
 

 

  
 

 

  
2. What are four different uses that living things have for proteins?
 

 

  
 

 

  
3. What are three rules from the cell theory?

 

 

 
4. Answer for the endosymbiont theory -

What two organelles does the theory apply to?

What are two features of the organelles / pieces of evidence that support the theory?

 

 

  
 

 

  
5. Give three sets of differences between -

CILIA

FLAGELLA

 		  

 		  

 		  
6. BOTH of the strands asked for will be "made" from the given strand -

DNA ___________________________________________________________
Strand A C T C C T G A C G A G T C C A C T

Other DNA                                                                                                                       
Strand ______________________________________________________________

RNA                                                                                                        
Strand _________________________________________________________

Bonus (2 Points): How many codons? ___________

7. Give the four structural levels of proteins in one column and describe or define that level in the other column.
 

 

  
 

 

  
 

 

  
 

 

  


Link to Answer Key

BONUS QUESTIONS.

Answer as many as you are able. Wrong answers will not result in points being lost from the main exam. You can get partial credit on these answers.

Of the many human chromosomes, a person can only survive getting a couple of types of extras in the sperm or egg that made them. Why can't they survive getting extras of the other types? Four Points.



Malpighi discovered something while looking at fish tails under an early microscope. What did he discover? Three Points.



Antony van Leewenhoek is considered the "father" of the microscope. What did he actually do that was important? Three Points.



How can being exposed to an unneeded antibiotic today lead to producing a strain of bacteria resistant to that antibiotic much later? Four Points.




Virtually all plant cells have golgi bodies. Why? Three Points.



Calories are technically a measurement of what sort of energy? Three Points.



What odd ability develops that makes a cancer malignant? Three Points.



What was the significance of E = mc2? Don't explain what it means, tell why it's important. Four Points.



About how much are you using your textbook in this course? Two Points.

 

 

 		  
 
 

SC 135 

Michael McDarby

 

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