1. Waxy Cuticle – Forms a waterproof layer to stop any loss of water. 2. Upper Epidermis – Consisting of epidermal cells. These have …
Transportation in a Plant
The following diagram shows the structure inside the stem of a plant. This is how water, sugars, and minerals are …
Human Kidneys
The kidneys have an important role to play in homeostasis in humans. They filter out the urea, and excess minerals …
Human Skin
When the body is cold 1. The small capillaries near the surface of the skin constrict (vasoconstriction) so less blood …
Brain and Nervous Systems
1. Cerebrum – (consisting of the two cerebral hemispheres) A small part of the cerebrum determines what we hear. Another section interprets …
Leaching and Eutrophication
Leaching describes the “washing out” from soils any soluble chemicals that are not “bound” to the soil particles. It occurs …
Pollution
The impact of human activities on the earth has become noticeable and significant during the last century resulting from: Increasing …
Diffusion
Diffusion is the seemingly random movement of a substance from where these particles are in high concentration to where there …
Genetic Terminology
DNA The molecule which contains genes. It’s shaped like a double helix (a spiral) Chromosomes Found in the cell nucleus: …
Cells, Tissues and Organs
This section lists pretty much everything to do with living cells, which includes tissues and organs. Have fun revising everything …