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G7 Science Ch3.1


autotroph (“self”) an organism that makes its own food, a producer. They include plants, other organisms such as algae & few bacteria
Heterotroph (“other”) an organism that CANNOT make its own food, a consumer
A producer can also be called ______ autotroph
A consumer can also be called ______ heterotroph
T/F some organisms absorb their food from other organisms TRUE; some heterotrophs such as fungi
nucleus the organelles that acts as the cell’s control center and directs cell’s activities
chloroplasts organelles that capture energy from sunlight and use it to produce food for the cell
mitochondria organelles that convert energy in food to energy that cells can use to carry out their functions
What is plant food? fertilizer that contains minerals such as potassium, Calcium, phosphorus. It helps plants grow, but does not supply them with energy!
What would happen if you put a small seedling in darkness? it grows very little since it cannot make its own energy
Photosynthesis the process by which a cell captures energy in sunlight and uses it to make food
T/F most living things obtain energy from the sunlight captured during photosynthesis TRUE. Some obtain energy directly (grass) while others obtain energy indirectly (zebra, lion)
Explain photosynthesis process whereby plants/other organisms absorb sun’s energy & use it to convert carbon dioxide and water into sugars and oxygen
First stage of photosynthesis Energy from sunlight captured + water in chloroplasts is split into hydrogen and oxygen (waste)
Second stage of photosynthesis cells produce sugar using hydrogen obtain from stage one photosynthesis + CO2 from air
Sugars are a type of carbohydrate
Where does photosynthesis occur? mostly in the leaves; within the green organelle called chloroplasts
What is the main pigment for photosynthesis chlorophyll
Explain relationship between chlorophyll and chloroplasts? chlorophyll is found in chloroplasts
State the photosynthesis equation light energy + 6 CO2 + 6 H2O ——> C6H12O6 + 6 O2
What are the raw materials of photosynthesis? Carbon dioxide and water
Created by: ka1usg