1. Each of us is composed of about ____
cells.

 
2. The immense number of cells that
makes up our bodies is the result
of approximately ________ rounds
of cell division.
 

3. The nucleus is surrounded by a
_______________.

 
4. The nuclear envelope is selectively
permeable and has pores about
_________ nm in diameter.

 
5. Ribosomes are assembled in the
______________.
 

6. Define cytoplasm.
 
 
 
 
7. List three organelles that are of
    special interest to geneticists.
 
 
 
 
8. What are centrioles? What do
     they consist of?
 
 
 
 
 
9. In animal cells, a pair of
    centrioles is at the center
    of a _______________.
 

10. What is a centrosome?
 
 
 
 
11. What is endoplasmic reticulum?
      What are two types of ER?
 
 
 

 
12.  Distinguish between SER and RER.
 

 
 
 
 
13. What is the Golgi apparatus?
 
 
 

 
14. In eukaryotes, the chromosome
      number (diploid number) is
      usually even/odd.
 
 
 
 
15. Distinguish between the diploid
      number and the haploid number.
 
 
 
 
16. What is a metacentric chromosome?
 
 
 
 
17. What is a submetacentric chromosome?
 
 
 
 
18. What is an acrocentric chromosome?
 
 
 
 
19. What is a telocentric chromosome?
 
 
 
 
20. Do humans have telocentric chromosomes?
 
 
 
21. The shorter arm of a chromosome, by
      convention, is called the ____ arm.

 
22. The longer arm is called the ____ arm.

 
23. What are homologous chromosomes?

 
 
 
 
 
24. What is a karyotype?
 
 
 
25. The two major stages of the cell
      cycle are… .
 

 
26. Cell division consists of _____
      and ________.
 
 

 
27. Distinguish between mitosis and
      cytokinesis.
 
 
 
 
 
 
28. What is interphase? In general,
       what happens during interphase?
 
 
 

29. List the 3 stages of interphase.
 
 

 
30. What happens during G-1 of
       interphase?
 
 

 
31. What happens during S-phase
      of interphase?

 
 
 
 
32. What happens during G-2 of
       interphase?