95' SBIOA Exam
Part A: M/C
Part B: Short Answers
Part C: Essay Question
PART C: Single Issues,
Calculations and Essay. JUST
ANSWER ANY 6
OF THE FOLLOWING QUESTIONS.
The population of zebra mussels in a certain lake is currently 1
000. They are breeding at a
rate of increase of 12% per month.
. How many zebra mussels ought there
be in 2 years (24 months)? Show
all relevant elements to your solution.
. In 2 years, only 4 000 zebra
mussels are found. Give
four five different reasons why this may be so.
A biologist's team catches and tags 2000 lake trout in Lake
Huron. S/he then lets them
go. After the weekend, the
team recaptures 400 lake trout. Twenty
of the 400 are tagged.
. What is the population of lake
trout? What assumptions are
being made in your analysis?
. If the area they fished in was 10
square kilometres, how many lake trout are there in Lake Huron?
Use the map provided.
Describe the chemi-osmotic theory of how ATP is made.
Which biochemical reactions are more important:
reduction or oxidation. Explain,
The Rhesus factor protein is a protein which sticks out from the
surface of red blood cells. A
person who does have the protein is referred to as "Rh+."
A person who lacks the protein is called an "Rh-."
Sixteen percent of North Americans are Rh-.
. How many people in the population
are genetically heterozygous for the Rh gene?
. Which gene is dominant?
How do you know?
Briefly describe five bodies of evidence which support belief in
evolution of organisms.
Beans are a plant. Plants
make glucose. Beans are
high in protein. Soil
contains an oxidzed form of nitrogen atoms knwown as nitrates (NO3-).
Where do beans get their protein from.
How important are proteins to a plant?