Photosynthesis Case

Autotrophs are able to make their own food by taking from the ground and atmosphere, using energy from the sun or through chemical reactions.

Heterotrophs are unable to make their own food, so they ingest organic material already formed from other living beings or from the remains of living beings

Photosynthesis

Carbon Dioxide + Water - Glucose + Oxygen

Diffusion is the movement of water from an area of high concentration to an area of low concentration whereas osmosis is the diffusion of water across a semi-permeable membrane from the side with more water to a side where there is less water.

As cells get bigger, surface area/volume ratio's get smaller. This is why cells have limits as to how big they can get; a small surface area canot provide enough raw products to a large volume. The larger the surface area/volume ratio, the more efficient is the movement of substances into and out of the cell.

Compare the roles of respiratory, circulatory and excretory systems.

Identify and compare the gaseous exchange surfaces in an insect, a fish, a frog and a mammal.

Explain the relationship between the requirements of cells and the need for transport systems in multicellular organisms.

Outline the transport system in plants, including:

root hair cells

xylem

phloem

stomates and lenticels

Compare open and closed circulatory systems using one vertebrate and one invertebrate as examples.

Use available evidence to perform a first-hand investigation and gather first-hand data to identify and describe factors that affect the rate of transpiration.

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