Assessment Statement 8.2.3 Light-dependent reactions of photosynthesis (thylakoid reactions)
Explain the role of the
of photosystem II
Hundreds of cholorophyll molecules are grouped together in the
AHL Chapter 8.2
Step 1: Light Dependent
Assessment Statements Day 1
8.2.1: Draw and label a diagram showing the structure
of a choloroplast as seen in an electron micrograph.
8.2.2:State that photosynthesis consist
AHL Assessment Statements 8.1
8.1.1State that oxidation involves the loss of electrons from an
element, whereas reduction involves a gain of electrons; and
that oxidation frequently involves gaining oxygen or losing
3.6.3 The effects of temperature, pH and substrate
concentration on enzyme activity
Effect of Temperature:
Enzyme activity will increase as temperature increases (often doubles
with every 10C rise). At a higher temperature more collisions occur
Chemistry of Life
Water: The Primary Molecule of Life
Assessment Statements 3.1.1 to 3.1.6
What must cells do to stay alive?
Maintain regulation - Get rid of wastes/ingest food and
Grow & Develop
Respond to changes in their environment
IB Biology Core
3.6.1Define enzyme and active site.
3.6.3Explain the effects of
temperature, pH and substrate
concentration on enzyme activity.
3.6.5Explain the use o
IB Biology AHL
State that metabolic pathways consist of chains
and cycles of enzyme-catalysed reactions.
Describe the induced-fit model.
Explain that enzymes lower the activation energy
of the chemical reactions that
P Y AHL
Explain the four levels of protein
structure, indicating the significance
of each level.
Outline the difference between
fibrous and globular proteins, with
reference to two examples of each
Biochemistry practice questions - answers
both are inversely proportional /
as CAA concentration increases both activity and growth decrease;
growth is more irregular at low concentrations;
Biologically Important Macromolecules
All living organisms are composed of various types of organic molecules, such as carbohydrates,
starches, proteins, lipids, and nucleic acids. These substances, contained in the foods we eat,
provide us wit
Properties of an Enzyme
In this activity, you will examine some properties of an enzyme called
peroxidase. This enzyme breaks down hydrogen peroxide (a toxic by-product
of cell metabolism) into harmless water and oxygen.
To compare the activity o