Transcript Document

Enzymes
Draw a graph to show what happens to enzyme
activity as temperature increases?
What type of cell is this?
Where is it found?
activity
What are enzymes?
How is it adapted to it job?
What do we call the model that is used to explain
how enzymes work?
temperature
What happens to enzymes at high temperatures?
What is the function of:
• cell wall
Why do we need enzymes? Give some examples of
processes that are controlled by enzymes.
B4 Revision
– Life Processes
Part 1
• Nucleus
• Cell membrane
• Chloroplast
• cytoplasm
Osmosis
What is diffusion?
What is active transport?
How are osmosis and
diffusion different?
How are diffusion and
active transport
different?
time
partially permeable membrane
What is a partially permeable
membrane?
Name 3 things that move in or out of
cells:
What is osmosis?
Draw and label a plant cell and an animal cell
What is the word/symbol equation for photosynthesis?
B4 Revision
– Life Processes
Part 2
What are the tests for starch
and glucose?
Glucose is produced
during photosynthesis.
What does the plant use
glucose for?
Starch:
•
•
•
•
Which is more efficient,
aerobic or anaerobic
respiration?
What is the word/symbol equation for aerobic
respiration?
In animal cells:
•
Glucose
•
In plant cells and some microorganisms:
•
Glucose
•
•
What is the energy
produced in respiration
used for?
What three factors can
limit the rate of
photosynthesis?
•
Glucose:
________ respiration
can take place in
animal, plant and some
microbial cells in
conditions of low
________ or absence
of _________ e.g.
• Roots in
waterlogged soil
• Bacteria in puncture
wounds
• Human cells during
vigorous exercise
Equations for anaerobic respiration
_______ acid (+energy released)
_______ + carbon dioxide
(+ energy released)
How can anaerobic respiration of microorganisms be
useful?