Question

define trasnport system (biology)

Answer 1

Answer:

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Transport System biology

The human transport system is a system of tubes with a pump and valves to ensure one way blood flow. We need a transport system to deliver oxygen, nutrients and other substances to all our body cells, and take away waste products from them. The oxygenated blood (high in oxygen, red in color) comes to the heart from the lungs in the pulmonary vein; the heart pumps it to the aorta (an artery) to the rest of the body. The deoxygenated blood returns to the heart from the body in the vena cava (a vein), the heart pumps is to the lungs to get rid of the carbon dioxide.

Explanation:

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Answer 2

Explanation:

In biology, transport refers to the act or the means by which a molecule or ion is moved across the cell membrane or via the bloodstream.

There are two types of transport in this regard:

(1) passive transport and

(2) active transport.

Passive transport is a kind of transport by which ions or molecules move along a concentration gradient, which means movement from an area of higher concentration to an area of lower concentration. The four major types of passive transport are diffusion, facilitated diffusion, filtration, and osmosis.

Active transport is a kind of transport wherein ions or molecules move against a concentration gradient. This means the movement is from an area of lower concentration to an area of higher concentration. This type of transport requires expenditure of energy and the assistance of proteins (i.e. carrier protein).

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