Review questions, Oct 30

 

1. Most non dividing cells in mature adult is arrested at _________ .  _______ give go-ahead signals to arrested cells.

A)    the G1 checkpoint ............. inhibitors

B)    the G1 checkpoint ............ Growth factors

C)    the G2 checkpoint ............ Growth factors

D)    the G2 checkpoint ............  carcinogen

E)    the M checkpoint .............. DNA

 

2. Which of the following tissues contains the least amount of dividing cells?

A)    nervous tissue

B)    skin tissue

C)    testis

D)    bone marrow

E)    tumor

 

3. Homologous chromosomes refer to ___________.

A)    a set of duplicated chromosomes during mitosis

B)    a set of chromosomes that carry identical genetic information

C)    chromosomes in two different species evolved from a common ancestor chromosome

D)    chromosomes that are found in both male and female cells

E)    a set of chromosomes that carry genes controlling same characteristics.  One derived from the mother and the other derived from the father.

 

4. A somatic cell from human female contains total of ____ chromosomes, consisting of ____ autosomes, ___ X chromosome(s) and ___ Y chromosome(s).  (Fill in appropriate numbers.)

 

 

BIOL1551 home page: www.geocities.com/madokagm/BIOL1551/