bio-photosynthesis
Which phrase correctly identifies the organelle and describes its function?
C) a chloroplast, which carries out photochemical and carbon-fixation reactions
Eating a sweet potato provides energy for human metabolic processes. Which is the original source of this energy?
C) the sun through photosynthesis
One immediate cause of a decrease in the rate of photosynthesis is a reduction in the availability of
Carbon Dioxide
An enzyme known as rubisco enables plants use large amounts of carbon dioxide. This enzyme is most likely active in the
D) chloroplasts
Which process is directly used by autotrophs to store energy in glucose?
Photosyntheis
.Which activity of autotrophs makes radiant energy available for use by heterotrophic organisms to perform essential cell functions?
Photosynthesis
Which process performed by organisms produces oxygen for the aquatic ecosystem
autotrophic nutrition
Much of the carbon dioxide produced by green plants is not excreted as a metabolic waste because it
can be used for photosynthesis
In the 1660s, Flemish physician Jan van Helmont grew a small willow tree in a pot of soil. He added only water to the pot. At the end of five years, he found that the tree had gained 75 kilograms, but there was very little change in the mass of the soil. Van Helmont concluded that the plant gained weight directly from the water. We now know that this conclusion is only partially correct because, in addition to water, photosynthesis also requires
carbon dioxide from the atmosphere
Over time, a tree that once had a total mass of 300 g increased in mass to 3000 kg. This increase in mass comes mostly from
carbon dioxide that enters through the leaf openings
An enzyme known as rubisco enables plants use large amounts of carbon dioxide. This enzyme is most likely active in the
chloroplasts
The presence of which organelles would identify a cell as a plant cell?
chloroplasts
Which gas is excreted as a waste product of autotrophic nutrition in maple trees?
oxygen
Which process is directly used by autotrophs to store energy in glucose?
photosynitisis
Which process uses energy to combine inorganic molecules to synthesize organic molecules?
photosynthesis
