Ch 3 The Energy of Life Flashcards
what is metabolism
the chemical reactions that take place in the cells of organisms
what is an enzyme
a biological catalyst that speeds up the chemical reactions in cells
what is a substrate
the substance the enzyme acts on
what is homeostasis
homeostasis is how organisms keep the conditions balanced and the same in their bodies
what is photosynthesis
the way plants make their food
what do you call and organism that produces its own food
a producer
what is stomata
small holes in the leaves of a plant that allows carbon dioxide in
what is chlorophyll
chlorophyll is a green pigment found the chloroplast of a plants cell. it absorbs sunlight energy and converts it to chemical energy
what is the equation for photosynthesis ( word and chemical )
carbon dioxide + water ——— sunlight/chlorophyll——— oxygen + glucose
6CO2 + 6H2O ———-sunlight/chlorophyll——- C6H12O6 + 6O2
name four conditions suitable for photosynthesis in
sun, rain, co2 available from atmosphere, soil and air temperatures allow enzymes to work
what is respiration
the release of energy from food
what is a consumer
a consumer is an organism that must eat food because they cannot produce their own
what is aerobic respiration
most organisms need oxygen to respirate
what are mitochondria
tiny organelles in the cytoplasm where respiration takes place
what is the equation for respiration ( word and chemical )
Oxygen + Glucose ——mitochondria——- carbon dioxide + water + energy
6O2 + C6H12O6 ——- mitochondria——— 6CO2 + 6H2O + energy
