Archive for February, 2010

Science Questions Unanswered

Posted on February 26 2010 by

These were the unanswered science questions What is Pellagra? Happens due to Vitamin B3 defficiency What is chlorosis? Due to insufficient chlorophyll produced by plants Bile is secreted from liver Share on Facebook

Carbon Cycle Science Form 5

Posted on February 1 2010 by

Carbon Cycle plays a vital role to palnts and animals. This helps to keep the amount of carbon dioxide and oxygen in the air constant What is the importance of Carbon Cycle?  Plant needs it for photosynthesis and animal needs oxygen to breath. Look at the diagram. Share on Facebook

Water Cycle Science Form 5

Posted on February 1 2010 by

The chapter is all about Natural Cycles such as water cycles, nitrogen cycles and carbon cycles Foob web Natural Disasters Pollution and Effects of Pollution Water Cycles The Sun heats up the water and evaporates the water from sea, pond and lakes Water vapour raises up and condenses to form clouds Rain fall back the [...]

Endocrine System

Posted on February 1 2010 by

Function of Endocrine System a) Made up of glands b) Secrete hormones  c) Types of gland … Pituitary gland, Thyroid gland, Adrenal gland, Pancreas, Testis, Ovary. Thyroid gland Producte thyroxine. Contorl metabolic rate Adrenal Gland Secretes Adrenaline to increase heartbeat, breathing, blood pressure and blood glucose Pancreas Produce Insulin to control glucose level Testis Produce [...]

Voluntary and Involuntary Action

Posted on February 1 2010 by

Questions Define Voluntary and Involuntary action? Provide an example to elaborate both the actions? Voluntary Action: Can be controlled by us. Example are writing, singing, dancing and walking PATHWAY: Receptor – ->Spinal Cord –> Cerebrum –> Spinal Cord –> Effector Involuntary Action: It’s actions tae place automatically without the conscious of our mind. Example Heart [...]

Human Brain

Posted on February 1 2010 by

Human brain consist of 3 major parts Cerebrum : Largest part of human brain which is responsible for memory,thinking and voluntary action. Controlling voluntary action Cerebellum : Controls all movement, balance and posture. Medula Oblangata : Controls all involuntary action such as heart beat . . Terminology: Grey Matter: consist of neutrons and cell bodies [...]