Answer:
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.The digestive system fuels the cells and the excretory system rids the body of the cells' waste.
Explanation:
Sounds like a multiple choice question, may I have the options?
Analogous. This means they share a similar function (flight) but do not have the same embryonic origin.
How did stromatolites contribute oxygen to the early atmosphere?
by weathering of rocks
through photolysis
through methane degradation
through photosynthesis
Answer:
by weathering of rocks
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The right answer is water.
The transformation of oxygen into water is done at the level of the mitochondria in a process called oxidative phosphorylation.
In eukaryotes, oxidative phosphorylation occurs in the inner mitochondrial membrane, specifically at the cristae of this membrane. It includes the respiratory chain, which provides oxidation of coenzymes reduced by the Krebs cycle, and ATP synthase, an enzyme capable of phosphorylating ADP to ATP from the energy released by the respiratory chain during the course of treatment. oxidation of coenzymes. This energy is stored as an electrochemical gradient across the inner membrane of the mitochondria by proton pumps that generate a proton concentration gradient during the flow of electrons along the respiratory chain. The final step of the latter is the reduction of one oxygen molecule by four electrons to form two molecules of water by fixing four protons.
