Image Source - The United Kingdom 10 pound note. This year many scientists are celebrating Charles Darwin’s 200th birthday. Darwin is famous for his book, “The Origin of Species” which was a revolution in biology and controversial in it’s day for the theory that species could evolve over generations to form new species – and that [...]
Source: Biology Online This Wednesday afternoon we will be dissecting laboratory rats, which are specially bred for scientific purposes. This practical exercise is optional, but an excellent way to gain scientific skills of careful observation, identification of body parts and an understanding of the structure and function of the digestive system of mammals. If you plan [...]
Photo Source Today we discussed the digestive systems of other animals, including flatworms, earthworms, cockroaches and birds. How is the diet, size and structure of the animal related to their digestive systems? What is the function of a ‘gizzard’ and ‘crop’ in earthworms and birds?
Photo Source Today we are looking at the different digestive systems of mammals and investigating the relationship between diet, nutritional requirements and the structure and function of digestive systems. You will learn the meaning of the terms fermentation, hind-gut and fore-gut fermenters, ruminants, caecum and colon. Check out the MyStudiyo Quiz “Heterotrophs are Consumers” at [...]
Image Source Swedish scientists have used radioactive carbon-14 to show that between 0.5 and 1.0% of heart cells regenerate each year, depending on age. Read more here. We were talking about bees in class during the last week of term – I happened upon this interesting article from the Scientific American – “Plan Bee: As [...]
Photo Source “The first high-resolution close-up photographs of the H5N1 avian flu virus, taken by science photographer Lennart Nilsson, appeared in the Swedish daily Dagens Nyeter (DN) on November 7, 2005, in what the newspaper said was a world exclusive.” Try these fun activities from Quia to revise Unit 1: Area of Study 1: Cell [...]
Photo Source During the two week break make sure you read through Chapter 5 and start answering the Chapter review questions. Take study notes, including definitions of key terms and important concepts. You could also draw concept maps for each of the digestive, respiratory, excretory and circulatory systems. Compare the nutrition and transport systems [...]