Quiz on macromolecules, enzymes and photosynthesis
Questions and Answers
The four main macromolecules are ___________, _____________, ___________ and ___________
How many different types of amino acids make up proteins?
Carbohydrates are composed of:
The molecule of DNA consists of two strands coiled together to form a ________ ________
Each nucleotide is made up of ____ chemical groups
The substances that enzymes bind to are called ___________.
Speed up reactions
Are not used up in the reaction
Eventually become 'worn-out' and must be replaced
All of the above
Each enzyme catalyses only one type of reaction.
A ___________ is a substance that speeds up a chemical reaction without being used up in the reaction itself.
What is the name given to the amount of energy needed to start a reaction?
The rate of an enzyme-controlled reaction increases when the temperature's raised. But, if the temperature increases beyond a certain point, the reaction stops. At this point, the enzyme is __________.
3 factors that will affect the rate of enzyme activity.
A chemical process that captures light energy and stores it as potential chemical energy. This is the definiton of which term below
The ultimate source of energy for most autotrophs and heterotrophs is ________ ________
What is the role of chlorophyll is photosynthesis
The main source of energy for life on Earth is sunlight.
The word equation for photosynthesis: LIGHT_______ _______ + ______ --------------> ________ + oxygen CHLOROPHYLL
The chemical equation for respiration: _______ + _____ --------------> _____ + 6H2O + energy (ATP)
This quiz is based on the content within the Nelson Biology 12 textbook. Enzymes are both proteins and biological catalysts produced by living organisms, and these catalysts accelerate various chemical reactions. This test...
Questions: 55 | Attempts: 9704 | Last updated: Mar 22, 2022