Question

subse questions for life process about the topic of human digestive system​

Answer 1

Answer:

Human digestive system- consists of the long alimentary canal that includes mouth, pharynx, oesophagus, stomach, small intestine, large intestine, rectum and anus. Nutrition in humans: ... Digestive juices – break down protein into simpler substances. The food from stomach eventually moves into the small intestine.

Explanation:

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Answer 2

Answer:

Respiration

• It is controlled by enzymes and energy is released from the breakdown of organic substances. It is of two types that are aerobic and anaerobic

Aerobic respiration

• Oxidation of food materials by oxygen

• Produces 36 ATP

• The steps followed in cellular respiration

First step is breakdown of glucose (6C) into pyruvates (3C) in the cytoplasm

Second step- Pyruvate is then broken down to CO2 and water and it takes place in the mitochondria where energy is produced in ATP form.

Anaerobic respiration

• It is the Oxidation of nutrients without using up the molecular oxygen

• It gives 2 ATPs.

• First step- glycolysis in cytoplasm, 2 pyruvate produced

• Second step is the break down of pyruvic acid into ethanol and water and energy (in yeast) and lactic acid and energy (in muscle cells)

Human respiration