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