Question 9 (4 points) The diagram below shows how glucose molecules move down a concentration gradient to enter a cell with the help of transport proteins.
Protein channel
Glucose
molecules
outside
O
inside
O
What type of transport is shown in the diagram?
оа
pinocytosis
facilitated diffusion
b
Ос
osmosis
active transport
Od

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

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these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.