A1.1 Water Important Points

List out the reasons that make water the medium of life
choose 2-3 as explanation in test depending on mark

1. makes up the fluid inside all cell organelles (mitochondrion)
2. an essential component of blood (plasma)
3. permits transport of substances into and out of the cell (cell membrane)
4. found between cells in multicellular organisms
5. provides the medium in which all organisms in ocean, river and lake lives

draw the structure of water

buoyancy in real life context

larger fish and mammals are able to survive in water

viscosity in real life context

animals must adapt to move through water

specific heat in real life context

good as a habitat as it does not fluctuate in temperature

thermal conductivity in real life context

many marine animals have blubber to prevent heat lost

transparency

plant can survive on water beds as light can reach so photosynthesis will occur which produces energy

physical property that affects the ring seal

buoyancy: lower density blubber to increase buoyancy
viscosity: streamlined shape to reduce drag against gravity
thermal properties: insulating blubber which has a lower heat conductivity than liquid water to reduce heat loss
specific heat capacity: the low specific heat of air allows them to be warmed easily

physical property that affects the black throated loon

buoyancy: large wings to generate lift iin less buoyant air
viscosity: it is hydrodynamic which reduce drag against gravity
thermal properties: oiled exterior feathers to exclude water