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Biology help HERE ONLY!!

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SGVaibhav:
waiting
..
sites did not help

Shogun:
the cheese mkhing is same as making yoghurt except an enzyme called renin is added to make more solid material from the milk which i think is called curd

SGVaibhav:

--- Quote from: sgvaibhav on May 26, 2009, 02:45:49 pm ---Can anyone describe the structure of a motor neuron and a sensory neuron.
Not the whole part, only about axons-dendrons-dendrites.



there was a question in that past papers
A motor neuron was given
State two features that distinguish it from other types of nerve cell.

Answer:
Its cell body is terminal.
Has long axon

OR

It has motor end plates
It has many dendrons and dendrites


I have highlighted the parts which i dont understand

--- End quote ---

SGVaibhav:
one more doubt
not doubt
but if anyone is free

explain the menstrual cycle if anyone is free and good at it

nid404:
hey visit http://msnbcmedia.msn.com/i/msnbc/Components/Interactives/Health/WomensHealth/zFlashAssets/menstrual_cycle_dw2[1].swf
read my explanation but plz visit the site


Each cycle takes about 28days

- At the start of each cycle, menstruation occurs-the lining of the uterus breaks down due to a drop in the levels of progesterone, and the cells and blood making up the lining are shed via the vagina. This is menstruation

- Under the influence of oestrogen from the ovaries, the uterus lining then starts to build up again, developing a mass of blood vessels so it is ready to receive a fertilised ovum

-Follicle stimulating hormone(FSH) causes a follicle in one of the ovaries to mature into an ovum.

-About halfway through the cycle, the level of oestrogen drops and there is secretion of LH(luteinizing hormone) from the pituitary gland, triggering ovulation. This is when the wall of the ovary ruptures and an ovum  is released

-The remains of the follicle (called corpus luteum) starts to secrete progesterone, which maintains the uterus lining.

-Towards the end of the cycle, the corpus luteum breaks down resulting in a drop in secretion of progesterone. The lining of the uterus breaks down again

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