“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 Structure and Function.
Cell organelles: http://www.quia.com/jg/1624832.html (Word search, Concentration or Flash Cards)
Cell organelles and Photosynthesis review: http://www.quia.com/ba/265821.html (Battleships)
Cells – Who wants to be a millionaire? : http://www.quia.com/rr/450977.html
The cell and plasma membrane: http://www.quia.com/cb/447399.html (Challenge board)
Stages of Mitosis: http://www.quia.com/rd/161026.html (Ordered List)
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 in plants and animals. You may find the following sites helpful:
BBC Human Body Interactives
National Geographic Human Body
Incredible Human Machine
Use My Studiyo to create your own quiz to revise one of the following concepts:
Types of cells (prokaryotic, eukaryotic, plant, animal, bacterial)
Structure and function of cells
Photosynthesis and respiration
Transport across membranes
Make sure you have at least ten questions.
No, it’s not a stawberry cocktail! Did you know that you can extract DNA using simple kitchen equipment and readily available materials? The CSIRO has some great biology experiments, including this one to extract DNA from onions. You could also use kiwi fruit, dried peas, banana, liver or strawberries.
You can see the fine, white strands of DNA on the toothpick. During mitosis, these strands condense and become more visible in the cell (especially when a stain is used like in the image below). The amount of chromatin (DNA or nuclear material) varies between species.