Search found 40 matches

by rg
Sat May 27, 2006 10:26 am
Forum: Cell Biology
Topic: Ribosomes, Endoplasmic and Reticulum
Replies: 4
Views: 2813

RIBOSOMES----These are small organelles present in the cytoplasm of a cell(both eukaryotic and prokaryotic) which are made of r-RNA and the sites for translation(2nd step of protien synthesis).... ENDOPLASMIC RETICULUM----These are too cell organelles present in the cytoplasm of a cell(eukaryotic ce...
by rg
Thu May 25, 2006 7:33 am
Forum: Microbiology
Topic: viruses and cancer..
Replies: 6
Views: 4992

reply....

yes....as scientists are making use of monoclonal antibodies,specific against specific virus,for destroying cancer cells...
by rg
Mon May 22, 2006 5:45 pm
Forum: Botany Discussion
Topic: Plants: number of ovules and pollen grains per flower?
Replies: 1
Views: 4388

since tobacco plant being eusporangiate has more than 128 microspores in each anther.....about the number of ovules in ovary of tobacco,see its placentation....
by rg
Mon May 22, 2006 5:38 pm
Forum: Cell Biology
Topic: plant and animal mitosis
Replies: 5
Views: 6911

Plant mitosis involves cell plate formation but animal cell involves cleavage furrow formation.....there are many complicated differences like formation of phragmoplast in plants(but not in animals),no centrioles in plants(but present in animals) etc....
by rg
Sat May 20, 2006 6:48 am
Forum: Physiology
Topic: Gas Exchange
Replies: 5
Views: 7834

actually this phenomenon includes participation of lungs, diaphragm and its associated muscles....when you inspire air in,the air is rich in O2 hence the partial pressure of O2 is much more in fresh air owing to which it diffuses into the blood through blood cappilaries after it gets soluble in the ...
by rg
Fri May 19, 2006 11:42 am
Forum: General Discussion
Topic: plz help me!-some questions
Replies: 3
Views: 3656

the ans. is D for the 2nd ques.
by rg
Tue May 16, 2006 7:08 pm
Forum: Physiology
Topic: glucose
Replies: 2
Views: 3343

a is the correct option......bcoz glucose as it is present in blood in good amount must also be present in glomerular filtrate....but in pct all of the glucose is reabsorbed in a normal person....
by rg
Tue May 16, 2006 7:03 pm
Forum: Physiology
Topic: Gas Exchange
Replies: 5
Views: 7834

actually it is a very complex process involving both lung,associated muscles and also hind brain....
explainin it would require a huge space....so it would be very helpful if u may ask about specific physiologies or process in mechanism of respiration....
by rg
Mon May 15, 2006 7:29 am
Forum: Cell Biology
Topic: Endoplasmic Reticulum funtion?
Replies: 5
Views: 4055

the final processing to protiens(like gycosylation etc.) is done in golgi complex....ER transports synthesised substances...but they may also participate in works like detoxification in liver by smooth ER.....chaperones do this possibly in the cytoplasm....
by rg
Mon May 15, 2006 7:18 am
Forum: General Discussion
Topic: What is cell adhesion?
Replies: 4
Views: 2862

its a phenomenon by which different cells adhere(stick) to each other....it is possible due to a glycolipid layer called glococalyx....its due to interantigenic recognition.....it is due to cell adhesion by which cells of same type join up forming a TISSUE of a kind.....
by rg
Tue May 09, 2006 6:00 pm
Forum: Ecology
Topic: abundance and distribution
Replies: 4
Views: 14042

abiotic factors can be density dependent or density independent........the former includes food and the likes.....the latter includes sunlight,water etc.....density can be measured by QUADRATE METHOD....try searching this topic on internet......
by rg
Tue May 09, 2006 5:45 pm
Forum: Botany Discussion
Topic: A technical and mind-bogging question
Replies: 8
Views: 6037

anything that looks coloured means that reflects that particular colour into your eyes.....