Year+12+Biology

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Here is a great revision test..... on respiration.

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** Unit Standard 8928 We are sitting this on Friday lunch for the resit **** ! **


 * Unit Standard 8927** Investigate Structure and function in cells (Level 2). **We are sitting this on Monday 8/11/10**

** Revision required for the US 8927 **

** Revise the parts and functions of the plant and animal cells. ** ** You should be able to draw and label both the plant and animal cell organelles. ** ** Identify the animal and plant cell. ** ** Explain the functions of the cell organelles found in the plant and animal cells **

** Revise comparing the typical cells of animals and plants to specialised cells found in both plants and animals – note differences and explain use. **

** Describe how the shape of an organelle and its differences relate to the function of that specialised cell. **

** Element 1 ** Prepare biological material for examination with a light microscope. Range: one from each of - cell components or organelles; unicellular organisms; leaf tear, transverse or longitudinal sections. ** performance criteria ** 1.1 Material is prepared to enable selected components to be shown.

** Element 2 ** Use a light microscope to view biological material. Range: any one of cell components, organelles, unicellular organisms, leaf tear, transverse sections, longitudinal sections. ** performance criteria ** 2.1 Components in biological material or organism can be seen.

** Element 3 ** Record observations of biological material in a biological drawing. ** performance criteria ** 3.1 The biological drawing records observations consistent with the biological material used.

Revision mind map. Use modify and upload for others to see!



useful animations! Meiosis - [|Meiosis Animation!!]

Cell biology - useful web links [|Enzyme Poisons or inhibitors]

Genetics past tests... good for revision before the exams



What steps would you use to complete a dyhybrid cross punnet square to find the genotype of the potential offspring of two traits?

Animal form and function past tests



Plants Angiosperm pic

__Who's been here.__

Mr M - Well I made this, so here I am! What do u think should be on this revision and question wiki?

Sup sir it be Tere and friend checking tiz page owt. lataz

HI everyone :D Holly has been here! (chocolate...)

Hehe, hello class :) from Elissa

__Plants Homework__ Holly-is this what we were supposed to do?: Insect pollinated flowers are large, colourful, have nectar and scent to attract insects to pollinate them. The nectar is usually at the base of the flower so that bees and other insects have to move around inside the flower and get pollen on their faces and legs. If the flower has a good amount of nectar then the insects will seek out flowers of the same type, resulting in them being pollinated. In contrast wind pollinated flowers are small but there are usually many of them. This is so the anthers can release a lot of light-weight pollen to be dispersed by the wind, and land on the many stigma of other flowers. Wind pollinated plants have no need for colouful flowers and nectar as insects take no part in their reproduction. Both insect and wind pollinated flowers contain both anther and stigma. Insect pollinated flowers have large stigma and anther, this is so lots of pollen can be transfered onto the insects that come to the flower and then get transfered onto the stigma by the insect where the pollen grain sticks. Wind pollinated flowers have small anther and stigma. The anther has thousands of light weight pollen which is easily dispersed by the wind. The stigma is light and bristly to have a higher chance of 'catching' the passing grains. //The anther is LARGE. this aids catching the most pollen as it is dispersed by the wind and there is a low chance of catching any.//