17 Questions
Which type of reaction involves energy being absorbed during the reaction?
Photosynthesis
What is the main function of enzymes in cellular respiration?
To speed up chemical reactions
In an exothermic reaction, where does the energy released go?
Into the surroundings
Which process literally 'burns sugar in the presence of oxygen'?
Cellular respiration
What is characteristic of an endothermic reaction graph?
Energy of reactants is higher than energy of products
Which of the following is an example of an exothermic reaction?
Cooking an egg
What is activation energy?
The minimum amount of energy required to start a reaction
How do catalysts affect reactions?
Reduce activation energy
What type of process is the melting of ice to water?
Endothermic process
Which of the following provides the energy for photosynthesis?
Sunlight
What is the role of enzymes in cellular respiration?
Decrease activation energy
What is the main product of photosynthesis?
Glucose
Which of the following is an example of an exothermic process?
Boiling water
What is the function of the endocrine system in the body?
Regulating blood sugar levels
Which organ in the endocrine system is responsible for producing insulin and glucagon to control blood sugar?
Pancreas
What is the purpose of cellular respiration?
Generate energy by breaking down glucose
Which of the following physical processes is considered endothermic?
Freezing point depression
Explore the concepts of chemical reactions, activation energy, catalysts, and phase changes in this quiz. Learn how activation energy is the minimum energy required to start a reaction and how catalysts help in speeding up reactions. Understand phase changes like melting ice to water and boiling water to gas.
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