Biology Final Exam

Prokaryotes divide by binary fission, a form of asexual reproduction in which?

• a cell divides into two cells with identical genetic information

• the number of chromosomes in the cell is reduced

• the nucleus divides into two nuclei

According to the Figure below, what is the chance that individual A will be afflicted with Huntington's?

• 25%

• 75%

• 100%

• 50%

A cell has 12 chromosomes. How many chromosomes will each daughter cell have?

• 4

• 12

• 24

• 6

What is the role of cyclin-dependent kinases in the cell cycle?

• They initiate various stages of the cell cycle

• They provide the energy for the actions of the spindle fibers

• They stop the cycle if something has gone wrong

How would the rib cage change in the figure below to inhale?

• The ribs would become further apart

• The ribs would become closer together

• The ribs would move downward

Examine the organ marked with an X in Figure 34-1. When air exits this organ, it will travel through all of the following structures except the _____________

• esophagus

• bronchioles

• trachea

Examine the diagram in Figure 34-1. What type of respiration occurs inside the diaphragm muscle itself?

• internal respiration

• external respiration

• inhalation

• exhalation

How would the diaphragm change in Figure 34-1 to inhale?

• flatten and lower

• flatten and go higher

• expand and lower

• expand and go higher

A stem cell has potential medical uses because it ______________

• is not specialized in structure and function

• is similar to a cancer cell, providing a study system

• undergoes apoptosis

What is the origin of nondisjunction for an XXX genotype that produces a phenotype of a nearly normal female?

• meiosis in egg formation

• meiosis in sperm formation

• meiosis I in sperm or egg formation