FIVE BIG QUESTIONS
Covering Quarter 2 Topics
Question 1- Cell Transport
• A plant cell and an animal cell have the same
composition:
– 20% solute and 80% water
• They are both placed in the same solution that
has the following composition:
– 10%solute
• Describe what will happen to both cells and
explain why.
Answer One
• Both cells will increase in size. They both are
made of 80% water and are placed in a
HYPOTONIC environment that has 90% water.
The water will rush from an area of high
concentration (solution outside the cell) to an
area of low concentration (inside the cell)
• The plant cell will be ok with this swelling in size
because it has a rigid cell wall.
• The animal cell may burst because it does not
have a cell wall to keep it together.
Question 2- Photosynthesis
• A student sets up the following experiment to
measure the rate of photosynthesis:
– One plant will have different intensities of light
– One plant will have different amounts of CO2 available
– One plant will be exposed to different temperatures
• What gas should the student measure to
calculate the rate of photosynthesis?
• Draw a graph that shows the rate of
photosynthesis for each of the three
experiments.
Answer 2
• The student will measure the amount of Oxygen (O2)
gas that is released during photosynthesis
• The graphs will be as followed (described)
– Graph 1 will increase as light intensity is increased until a
point where the rate of photosynthesis will level off
– Graph 2 will follow the same trend as light intensity as
more CO2 is made available to the plant
– Graph 3 will increase to a certain point and then decrease
as temperature continues to increase. This is because the
enzymes involved in photosynthesis begin to denature in
extreme low and high temperatures.
Question 3- Cellular Respiration
• Compare and contrast aerobic and anaerobic
respiration. When would each occur?
• What steps are involved in each process?
• What are the products of both processes?
• Which one of these processes is more
beneficial to organisms?
Answer 3
• Anaerobic respiration does not use oxygen. Aerobic
respiration does.
• Anaerobic respiration only includes glycolysis and
fermentation (alcoholic or lactic acid)
• Aerobic respiration includes glycolysis, Kreb’s cycle and
the Electron Transport Chain.
• Aerobic respiration produces 38 ATP total, as well as
CO2, water, FADH2 and NADH.
• Anaerobic respiration only produces 2 ATP and either
ethanol or lactic acid
• Aerobic respiration is more beneficial to organisms
because it produces much more ATP
Question 4- Body Systems
• You go to the doctor complaining of a cough and
have mucus in your lungs.
– What body system is most likely infected?
• Gigantism is a disorder that is caused by an
overproduction of growth hormone.
– Gigantism is a disorder of what body system?
• A disease causes you to not be able to absorb
nutrients as effectively
– What body system is directly affected by this disorder
Answer 4
• Respiratory system: Infected lungs, deals with
inhaling oxygen and exhaling CO2
• Endocrine system- Includes all the bodies
glands, releases hormones into the blood
stream that affect body functions
• Digestive system- breakdown and absorption
of nutrients from food
Question 5
• What are you going to do tonight to study?