Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
Answer Unlike the unicellular organisms, the multi-cellular organisms have complex body structures with specialized cells and tissues to perform various necessary functions of the body. Since these cells are not in direct contact with surrounding environment so, simple diffusion cannot meet the oxygen requirement of all these cells.
What criteria do we use to decide whether something is alive? Answer Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. However, a living organism can also have movements, which are not visible to the naked eye. Therefore, the presence of life processes is a fundamental criterion that can be used to decide whether something is alive or not.
What are outside raw materials used for by an organism? The raw materials required by an organism will vary depending on the complexity of the organism and its environment. What processes would you consider essential for maintaining life?
Answer Life processes such as nutrition, respiration, transportation, excretion. Page No: In this acidic medium, enzyme pepsinogen 10th ncert 6.6 3d converted to pepsin, which is trout fishing pontoon boat quick protein-digesting enzyme.
What is the function of digestive enzymes? Answer Digestive enzymes such as amylase, lipase, pepsin, trypsin. These simple particles can be easily absorbed by the blood and thus transported to all the cells of the body.
How is the small intestine designed to absorb digested food? Answer The small intestine has millions of tiny finger-like projections called villi.
These villi increase the surface area for more efficient food absorption. Within these villi, many blood vessels are present that absorb the digested food and carry it to the bloodstream. From the bloodstream, the absorbed food is delivered to each and every cell of the body. Hence, it is mostly transported from body tissues in the dissolved form in our blood plasma trout fishing pontoon boat quick lungs where it diffuses from blood to air in the lungs and then expelled out through nostrils.
The organisms that use anaerobic mode of respiration include some bacteria and microorganisms such as yeast. Previous Trout fishing pontoon boat quick Next Post. Contact form. LinkList ul li ul'. Tabify by Templateify v1.
Food is obtained directly or indirectly from autotrophs. This food is broken down with the help of enzymes. P hloem tissue helps in the transport of food. The walls of the alveoli are one cell thick and it contains an extensive network of blood capillaries. The exchange of O2 and CO2 takes place between the blood of the capillaries that surround the alveoli and the gases present in the alveoli.
The blood 10th ncert 6.6 3d the kidneys through the renal artery. The blood is entered here and the nitrogenous waste in the form of urine is collected by collecting duct.
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