2A Cells, Tissues, Organs & Systems
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Air sacs where gas exchange takes place in the lungs
Alveoli
Anchors the plants and absorbs water and nutrients
Roots
Stores and churns food - helps digestion
Stomach
Site of photosynthesis in plant
Leaf
Gas needed for respiration to take place
Oxygen
Chemical reaction that takes place in all cells - releases energy from food
Respiration
Organs working together
System
Waste substance from respiration (not a gas)
Water
Reproductive organs of plant
Flower
Blood vessels that carry blood away from the heart
Arteries
Water is absorbed and waste is prepared here.
Large intestine
Pumps to the lungs
Right side of the heart
Movement of molecules from a higher to a lower concentration
Diffusion
Made of tissues
Organs
The useful product of respiration
Energy
Breaking down food into smaller pieces
Digestion
Blood vessel where substances can move in and out of the blood
Capillaries
Waste gas of respiration
Carbon dioxide
Made of similar cells
Tissues
Pumps blood around the body
Heart
Blood vessel that carries blood back into the heart.
Vein
Building blocks of all living things
Cells
Cleans the blood and excretes waste through urine
Kidneys
Transports water and nutrients around the plant
Stem