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Plant cells transport sugars from cell to cell for energy production by means of __________ signaling.

Urea is the principal nitrogenous waste product in our urine. Where does the urea come from?

Which of the following is not found in the grana of chloroplasts?

An autotroph converts solar energy into chemical energy. This is an example of:

A drug to treat tuberculosis infections block a subunit of ATP synthase. What process would be halted in the bacterial cells?

Carbon dioxide is to cellular respiration as _______ is to photosynthesis.

All green plants, algae, and cyanobacteria use light as an energy source and are known as ________.

Glucose is leaving the cell as fast as it can enter. The enzyme ________ is not working correctly.

Chemical reactions that use energy and release energy are collectively known as _______.

Cellular respiration provides the ________ needed during photosynthesis.