NEET 2020 Biology Solution

 NEET 2020 Biology Solution

https://documentcloud.adobe.com/link/track?uri=urn:aaid:scds:US:739a5b71-778e-4082-91eb-9c8f7dfc62fd

Azeem Farooqui

(Biochemist)

Comparison between Catabolism & Anabolism

Comparison between   Catabolism & Anabolism

Anabolism	Catabolism
1.    It is a constructive process of metabolism	It is a destructive process of metabolism
2.    In anabolism, complex molecules (e.g. proteins) are synthesized from simple molecules (Amino acids)	In catabolism, complex molecules (e.g. Glycogen) are broken down into simple molecules (glucose)
3.    It is an energy (ATP) requiring process	It is an energy (ATP) releasing process
4.    It is a “Up-hill” process	It is a “Down-hill” process
5.    E.g. Protein synthesis, Glycogen synthesis, Photosynthesis	E.g. Glycogenolysis, Glycolysis, Digestion, cellular respiration

Anabolism	Catabolism
1.    It is a constructive process of metabolism	It is a destructive process of metabolism
2.    In anabolism, complex molecules (e.g. proteins) are synthesized from simple molecules (Amino acids)	In catabolism, complex molecules (e.g. Glycogen) are broken down into simple molecules (glucose)
3.    It is an energy (ATP) requiring process	It is an energy (ATP) releasing process
4.    It is a “Up-hill” process	It is a “Down-hill” process
5.    E.g. Protein synthesis, Glycogen synthesis, Photosynthesis	E.g. Glycogenolysis, Glycolysis, Digestion, cellular respiration

Differences between Amphibians and Reptiles

Features	Amphibians	Reptiles
Group	They come under class Amphibia	They come under class Reptilia
Habit and habitat	They usually stay near water sources to prevent drying out, and have smooth skin.	They are groups of animals that breathe air, have scales on their bodies, and lay eggs.
Breathing	Gills, skin and lungs	Lungs
Metabolism	Ectothermic (Poikilothermic or cold-blooded)	Ectothermic (Poikilothermic or cold-Blooded)
Metamorphosis	Yes. Breathes water through gills until it develops lungs.	No. Looks like a miniature adult when born.
Heart	3-chambered. Two atria and one ventricle	3-chambered, two atria and one ventricle. But ventricle is partially divided. Crocodiles have 4-chambered heart.
Limbs	Short fore- limbs and long hind limbs. They are generally pentadactyl (with five webbed digits).	Four limbs are present (except snakes).
Skin	Smooth, moist, rather sticky skin. Mucous glands are present.	Dry and scaly. Scales are made of keratin. Skin is found underneath the scales.
Eggs	Soft gel surrounding their eggs without any hard covering. Usually found in water or damp places.	Amniotic egg. Have hard, leathery eggs laid on land or they keep eggs in their bodies until they hatch.
Reproduction	Sexual. External fertilization	Sexual. Internal fertilization
Examples	Frogs, toads, newts, salamanders, caecilians or blindworms etc	Snakes, lizards, crocodiles, turtles etc

MAJOR DIFFERENCES BETWEEN ACTIVE ABSORPTION AND PASSIVE ABSORPTION OF WATER IN PLANTS

 

MAJOR DIFFERENCES BETWEEN ACTIVE ABSORPTION AND PASSIVE ABSORPTION OF WATER IN PLANTS

Active Absorption of water	Passive absorption of water
It occurs due to the activity of root and root hairs.	It occurs mainly due to the activity of upper part of the plant such as shoot and leaves.
Water is absorbed by the osmotic or non-osmotic processes along or against DPD gradient.	Water is absorbed as a result of tension created by transpiration pull.
It involves symplast (via. Protoplasm) movement of water.	It involves apoplast movement of water. i.e., through cell walls and intercellular spaces.
It utilizes metabolic energy.	It utilizes solar energy for transpiration.
Root cells play an active role.	Root cells play a passive role.
It is independent of transpiration.	It takes place when transpiration is fast.
It creates a positive pressure in the xylem channels.	It produces a negative pressure in xylem channels.