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Biology

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3699 Views

Do Neet requires 50%marks individually for physics,chemistry and biology or mean 50% marks of pcb together?

masteranshu27 1st Mar, 2019

For NEET Eligibility (with respect to Class 12 marks) you need to score pass marks in all subjects but the total aggregate in Physics, Chemistry and Biology should be -

50 percent minimum if you are a general candidate
40 percent minimum if you belong to SC/ST/OBC
45 percent minimum

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445 Views

pH of important important enzymes required for NEET Biology?

masteranshu27 28th Feb, 2019

Important enzymes along with their optimum pH

Buccal enzymes -
Salivary amylase (ptyalin) ->6.8

Gastric enzymes -
Pepsin, rennin (infants), gastric lipase -> 1.8-3.2

Pancreatic enzymes -
Trypsin, chymotrypsin, carboxypeptidase, amylopsin (pancreatic amylase), steapsin (pancreatic lipase), nucleases -> 7.1-8.3

Intestinal enzymes -
Enterokinase, erepsin, dipeptidase, lipase, maltase, sucrase, lactase, nucleotidase,

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73 Views

Can you give important points regarding ruminant stomach?

masteranshu27 28th Feb, 2019

Ruminant Stomach -
The stomach of ruminants is compound due to the presence of four chambers - rumen, reticulum, omasum and abomasum.

Storage of food occurs in rumen (rumen is the largest chamber).

True stomach is the abomasum where secretion of gastric juices occurs.

Anaerobic cellulolytic bacteria (eg. Rumenococcus) and

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751 Views

Various Dental formulae I am required to learn for NEET Biology?

masteranshu27 28th Feb, 2019

1. Human Dental Formulae -
Child - 2102/2102
Adult - 2123/2123

2. Elephant Dental Formula - 1033/0033

Important points related to dental formula -
1. Walrus tusks are modified upper canines.
2. Elephant tusks are modified upper incisors.

3. Birds and mammals like whales and anteaters do not have teeth.

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3375 Views

Difference between Hydrolase and Lyase.

masteranshu27 28th Feb, 2019

Hydrolases - Enzymes that catalyze the breakdown of larger molecules into smaller ones with the addition of water.
Eg - all digestive enzymes (like proteases, lipases, amylases, nucleases, etc.)

Lyases - Enzymes that catalyze the breakdown of larger molecules into smaller components without the use of water.
Eg. Aldolase, Carbonic

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112 Views

What is eligibility criteria about subject (physics, chemistry, biology) for neet .......OBC candidate....

masteranshu27 28th Feb, 2019

NEET Eligibility For OBC Candidates -

Qualifying Exam -
10+2 or equivalent with Physics, Chemistry, Biology/Biotechnology and English as core subject in both Classes 11 and 12 from a recognized board.

Qualifying Marks -
Pass mark in all subjects and a minimum 40 percent aggregate in Physics, Chemistry and Biology.

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1820 Views

Examples of saturated fatty acids and unsaturated fatty acids which I am supposed to know for NEET Biology.

masteranshu27 28th Feb, 2019

Saturated Fatty Acids
Capric Acid (10 carbons)
Lauric Acid (12 carbons)
Myristic Acid (14 carbons)
Palmitic Acid (16 carbons)
Stearic Acid (18 carbons)
Arachidic Acid (20 carbons)

Unsaturated Fatty Acids
Palmitoleic Acid (16 carbons, 1 double bond)
Oleic Acid (18 carbons, 1 double bond)
Linoleic Acid (18 carbons, 2 double

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1423 Views

Composition and structure of starch

masteranshu27 28th Feb, 2019

Starch is a homopolysaccharide. It is a polymer of glucose.

It has 2 components -

1. Unbranched component (Amylose) -
It consists of 200 - 1,000 glucose molecules (alpha-D-glucose molecules bonded with alpha 1-4 glycosidic linkage). It is helical (each turn consists of 6 glucose units).

2. Branched component (Amylopectin)

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618 Views

Bonds present in different kinds of protein structures

masteranshu27 28th Feb, 2019

Bonds present in various protein structures

1. Primary structure
Peptide bonds

2. Secondary Structure

Alpha helix -
Peptide bonds, Intramolecular hydrogen bonds

Beta pleated -
Peptide bonds, Intermolecular hydrogen bonds

Collagen helix -
Peptide bonds, Locking effect via proline and hydroxyproline

3. Tertiary Structure
Peptide bonds, Hydrogen bonds, Disulphide bonds,

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149 Views

M i eligible for nest i havent studied biology ...i have passed with 70% 12th with pcm nd dat to through cbse board....m i eligible?

Aditi amrendra Student Expert 28th Feb, 2019

Hello,

No, Biology isn't compulsory.
NEST Eligibility Criteria 2019 - Academic Qualification
General and OBC candidates must have completed their Class 12 qualifying examination with minimum 60 percent aggregate from a recognized board. Candidates from the SC/ ST categories must secure minimum 55 percent aggregate in their class 12 qualifying

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