Osmosis and Active Transport Flashcards
What is osmosis?
The net movement of water molecules from a low concentration to high concentration through a partially permeable membrane.
Water may move across cell membranes via _______?
Osmosis
What is active transport?
The movement of particles from an area of low concentration to high concentration.
Example 1 of active transport:
Active transport allows mineral ions to be _______ into plant ____ hairs from very dilute solutions in the soil. Plants require ions for healthy growth
Absorbed and root
Example 2 of active transport:
It allows sugar _________ to be absorbed from lower concentrations in the ___ into the blood which has a higher sugar concentration. THese are used for cell respiration.
Does active transport require energy?
YES! Gets the enrgy from respiration
Does osmosis require energy?
NO!
Does active transport require a membrane?
Occurs over a membrane - requires carrier proteins.
Does osmosis require a membrane?
Occurs over a partially permeable membrane.
Example of active transport:
Glucose in the small intestine
Example of osmosis
Plants drawing up water from the roots
Name the part of the blood that carries the most oxygen
Red blood cells
Name the gas that passes out of the blood into the alveolus
Carbon Dioxide
