Using at least three sentences, 1. explain why the processes of photosynthesis and cellular respiration are described as a cycle.

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. ... Without oxygen, much less ATP would be produced. Cellular respiration and photosynthesis are important parts of the carbon cycle

answer; ///(b) it is composed of four protein chains and four heme groups;

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.