These are similar to the questions that will be on the first lecture test.

1).  An idea, or educated guess, that can be tested is called a:
     a) prediction    b) experiment    c) hypothesis    d) observation

2). Correlation means: __________________________________________.

3).  A scientific theory is:
     a) a vague guess, or hunch
     b) an idea that has been supported by many experiments
     c) a fact                    
     d) the observation during a scientific experiment

4).  What is an element? ____________________________________________

     __________________________________________________________________

5).  What is the chemical symbol for Calcium ?  ___________


6).  Which particle in the atom has a negative electrical charge?
     a)  proton    b) gluon    c) neutron    d) electron

7).  What is a compound? 
     ______________________________________________________________

8).   What is the pH of stomach acid?
      a)  2       b)  4        c) 8        d) 10        e) 14

9).   At what temperature is water at its most dense?  _________ oC.

10).  What is meant by solute? ______________________________________

11).  Which carbohydrate is used for energy storage in plants?
      a) starch       b) cellulose      c) chitin      d) glycogen
	
12).  How many carbon rings are there in a steroid?
      a) 6      b) 4      c) 3      d) 2      e) 1

13).  Give an example of a disaccharide : ________________________

14).  Membranes are made of:
      a) phospholipid and protein     b) phospholipid and polysaccharide
      c) protein and polysaccharide   d) protein and nucleotide

15).  Which organelle is in plant cells and stores water, minerals and
      poisons?
                 ________________________________


16).  What does the nucleolus produce? ________________________________

17).  Which organelle packages and ships off chemicals?
      a) Mitochondria   b) Golgi body   c) Smooth ER   d) Lysosomes
 
18).  Which of the following is a good source of carbohydrates?
      a) meat     b) oil     c) milk     d) bread
	
19).  List two minerals that keep the body healthy: ________________________

20).  If large molecules are pulled in to a cell in active transport this is:
      a) pumps     b) diffusion     c) endocytosis     d) exocytosis 

21).  List three risk factors for heart attack: _______________________

      _______________________________________________________________


22).  What is anaerobic respiration? ________________________________


23).  Which stage in respiration produces CO2 and breaks down pyruvic acid?
      a) glycolysis          b) Krebs cycle
      c) Calvin cycle        d) Electron transport chain


24).  Which type of plant is common in the tropics and opens their stomata
      only briefly during the day?
      a) C3        b) C4        c) C5        d) CAM

25).  The US has __1__  of the worlds population and produces __2__ of all
      the greenhouse gases.
      a)   4 % ;  12 %        b) 12 %  ;  25 %
      c)   4 % ;  25 %        d) 25 %  ;  12 %