CHENNAI IN PICTURES

BIOTECHNOLOGY DEPARTMENT IIT CHENNAI

PLASTIC ROBOT

SOUTH INDIAN THALI IN CHENNAI

CHRISTMAS LIGHT IN A MALL

BIOTECHNOLOGY CONFERENCE HALL

Polymerase chain reaction machine

Biotechnology Dept IIT Madras

MGIMS MBBS ADMISSION

https://www.mgims.ac.in/index.php/admission-notice

http://manipal.edu/content/mu/lp/medical-generic.html?utm_source=google&utm_medium=cpc&utm_campaign=2016-Generic-MBBS-Search-India&utm_term=Medical%20admission%202016&Network=Search&utm_content=74343027531&SiteTarget=&gclid=CLnAjPSn8skCFcQWaAodZP0JVg

Black buck

Molecular Basis of Inheritance

SALIENT FEATURES OF DNA

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

1. DNA is made of two chains,where the backbone is constituted by sugar - phosphate , and the bases project inside.

2.The two chains have polarity. It means , if one chain has the polarity 5’-------> 3’ polarity, the other has
3’ 5’ polarity.

3. The bases in the two strands are paired through hydrogen bonds (H – bonds)forming base pairs ( bp). Adenine forms two H-bonds with Thymine from opposite strand and vice – versa. Similarly, Guanine is bonded with Cytisine with H-bonds. (As a result,always a purine comes opposite to a pyrimidine. This generates approximately uniform distance between the two strands of the helix)

4. The two chgains are coiled in a right – handed fashion. The pitch of the helix is 3.4nm and there are roughly in each turn.Consequently,the distance between a bp in a helixis approximately equal to 0.34 nm.

5. The plane of one base pair stacks over the other in double helix.This in addition to H-bonds, confers stability of the structures.

Download exemplar problem biology

EXEMPLAR PROBLEM BIOLOGY

Electron Transport System (ETS)

 All NADH+H+ Produced during Glycolysis & Krebs cycle is oxidized by NADH-dehydrogenase and electrons are transported to Ubiquinone(UQ)via FMN.
 In ETS, , Molecular Oxygen (O2)acts as terminal electron acceptor.
 Electrons from NADH+H+ is transported through FMN, UQ (Hydrogen Carrier, Cytochromes(b,C1,C,a-a3) and finally to O2 which takes 2H+ from matrix and form H2O.
 During transport of electron, proton (H+) is pumped by UQ to inter membrane space from matrix causing formation of proton gradient (due to increase in protons in inter membrane space and decrease in matrix).
 Breaking of this gradient and return of these protons(H+)through ATP synthase/ Fo-F1 particle/ oxysomes located in inner membrane cause synthesis of ATP.
 Since oxidation of NADH+H+ is the cause of formation of proton gradient and ATP synthesis thereupon, so this method of ATP synthesis is called as oxidative phosphorylation.
 Return of 2H+ from inter membrane space to matrix through ATP synthase release sufficient energy to synthesise one ATP molecule.
 On oxidation of 1 molecule of NADH+H+ pumps 6H+, therefore it produces 3 ATP molecules while oxidation of FADH2 pumps only 4H+, so it produces 2 ATP molecules.

PREVIOUS YEARS QUESTION PAPERS

CLASS XII BIOLOGY

PREVIOUS YEARS QUESTION PAPERS

scanning electron microscope

• 2014
• 2015 SET 1
• 2015 SET 2
• 2015 SET 3

MATCH THE FOLLOWING

22. CHEMICAL COORDINATION AND INTEGRATION

Matching exercise

Match the items on the right to the items on the left.

INSULIN	select HEART, CELL MEDIATED IMMUNITY CORPUS LUTEUM NEUROHYPOPHYSIS DIABETES MELLITUS
PROGESTERONE	select HEART, CELL MEDIATED IMMUNITY CORPUS LUTEUM NEUROHYPOPHYSIS DIABETES MELLITUS
ATRIAL NATRIURETIC FACTOR	select HEART, CELL MEDIATED IMMUNITY CORPUS LUTEUM NEUROHYPOPHYSIS DIABETES MELLITUS
THYMOSINS	select HEART, CELL MEDIATED IMMUNITY CORPUS LUTEUM NEUROHYPOPHYSIS DIABETES MELLITUS
OXYTOCIN	select HEART, CELL MEDIATED IMMUNITY CORPUS LUTEUM NEUROHYPOPHYSIS DIABETES MELLITUS

OTBA MATERIAL 2015-16 FOR DOWNLOAD

CLASS IX:

SCIENCE

HINDI

MATHS

SCIENCE

SOCIAL STUDIES

CLASS XI

BIOLOGY

REPRODUCTION CLASS -XII

REPRODUCTION IN ORGANISMS

Matching exercise

Match the items on the right to the items on the left.

Morphologically and genetically similar ogranisms	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
morphologically physiologically similar gametes	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
An Organism with male and female reproductive systems	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
Monoecious plants	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
Dioecious plants	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
bagging	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
PEC	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
scutellum	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
Cocunut water	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon
endosperm completly consumed	??? PRIMARY ENDOSPERM CELL isogametes Pea and ground nut papaya and date palm free nuclear endosperm clones Cucurbita and coconut artificial hybridisation hermaphrodites Monocot cotyledon