A group of similar (accoding to function) types of cells, when comes together to perform a specific function, then it forms a tissues.
When a group of similarly working tissues come together then they form an organ.
And this relation could be written as
cell > tissue > organ
So, organ is a collection of tissues and tissues are collection of cells.
Answer:
(of a substance) become concentrated inside the bodies of living things.
Explanation:
The answer is (b.) ATP and calcium
ATP (Adenosine triphosphate) and Calcium participates in the muscle movement. In a muscle contraction, Calcium ions are released to initiate upon the depolarization of the membrane which is induced by nerve impulses. While the ATP is required to the shortening of actin and myosin filament crossbridges.
Answer by Mimiwhatsup: The in photosynthesis will make the glucose that is used in cellular respiration to make ATP. Glucose is turned back into CO2(carbon dioxide), which is used in photosynthesis. While H2O(water) is broken down to form O2(oxygen) during photosynthesis, in cellular respiration O2(oxygen) is combined with hydrogen to form water.
(Down Below is their Equation)
Cellular Respiration: C6H12O6 + 6O2 → 6CO2 + 6H2O
Photosynthesis: 6CO2 + 6H2O → C6H12O6+ 6O2
Oxygen ( and glucose ) is produced by photosynthesis and humans do cellular respiration in which we give off the CO2 plants need :)
