Food Web
What is an autotroph?
also called a producer, they get energy from nonliving sources (sunlight and chemicals)
What are the reactants in photosynthesis?
Carbon dioxide and water (solar energy as well)
What is the correct format for a hypothesis?
If (IV), then (DV).
What is an heterotroph?
organism that gets energy from a living or once living organism
What phosphate bond on ATP has the most energy available when broken?
The last bond between the third and second phosphate
What are the products of photosynthesis?
glucose (sugar) and oxygen
What is the independent variable? Where is it graphed?
the variable that is changed or manipulated by the experimenter, graphed on the X axis
What is chemosynthesis?
organisms that get energy from chemicals, like those in a sulphur-rich marsh
What is aerobic respiration?
glucose (sugar) and oxygen
What is the dependent variable? Where is it graphed?
the response variable, the one being measured by the experimenter, graphed on the y axis
What are the four types of consumers? (trophic levels)
producer, primary consumer, secondary consumer, tertiary consumer
What is anaerobic respiration?
respiration in the presence without oxygen- fermentation (alcoholic in yeast, lactic in humans)
What are the products of cellular respiration?
water, ATP, and carbon dioxide
What are constants in an experiment? Why are they important?
they are variables that are held constant; they are important because only thing that changes is the independent variable- can make better claims on your experiment results
What is the rule of ten?
as energy flows from organism to organism up a trophic pyramid, energy is used for metabolism (heat) because of this the next organism on the chain only receives 10% of the energy obtained at the previous level
What do enzymes to in biochemical reactions?
lower the activation energy needed thus increasing the rate of reaction
How are photosynthesis and cellular respiration related? What is the ultimate source of all energy?
the products of one are the reactants of another, endothermic and ectothermic reactions. Ultimate source is sunlight
What is a control group? Why is it important?
the group that stays the same- if we were testing if Gatorade improved athletic performance. we would need results from a race where Gatorade was not given so we could compare the Gatorade race times with the normal race times to see if there was improvement