Introduction Flashcards
What is considered to be the ultimate source of energy for our planet?
The sun
Name the three most important forms of solar radiation.
Infrared rays
Ultraviolet rays
Visible rays
What do infrared rays do?
They heat the Earth
What do ultraviolet rays do?
They cause sunburn and cancer
What is photosynthesis?
The process by which green plants produce glucose and oxygen from carbon dioxide and water
What provides the energy needed for photosynthesis?
Light
What acts as a catalyst for the process of photosynthesis?
Chlorophyll
What is chlorophyll?
A green pigment found in plants
Where does photosynthesis take place?
It takes place in plants especially in the green parts, e.g the leaves, because these contain chlorophyll
Give an example of part of the plant which contains chlorophyll.
Leaves
Why do cells need energy?
Cells need energy to carry out their reactions
What do cells need in order to carry out their reaction?
Energy
What supplies the energy to cells needed to carry out reactions?
The breakdown of a molecule called adenosine triphosphate (ATP) provides energy in small, usable amounts
What type of energy is supplied by the breakdown of ATP?
Energy in small, usable amount is provided
What does ATP stand for?
Adenosine triphosphate
