Biology Classes By Sandeep Mittal

31/03/2026

https://youtu.be/qVKQKLPTvrA?si=Pw6doSfrZc9kcwMq

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15/03/2026

https://youtu.be/iRK7h54pbg8?si=vw_WSCTrYkgiDOql

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

29/12/2023

15/02/2023

https://youtu.be/nsYPjr_V-ls

09/09/2020

Q-145
In ecotone, some species become abundant and they are called
(A) sibling species
(B) endemic species
(C) rare species
(D) edge species

09/09/2020

Q-144
Match the entries in Group I with the entries in Group II
Group I Group II
P) Bacteria 1) Leishmaniasis
Q) Virus 2) Anthrax
R) Fungus 3) Rubella
S) Protozoa 4) Athletes Foot
(A) P-2, Q-3, R-4, S-1
(B) P-2, Q-3, R-1, S-4
(C) P-2, Q-4, R-3, S-1
(D) P-1, Q-2, R-4, S-3

09/09/2020

Q-143

Which of the following are NOT true for photosynthesis?
(A) Reduction of CO2 and H2O
(B) Oxidation of CO2 and H2O
(C) Reduction of CO2 and oxidation of H2O
(D) Oxidation of CO2 and reduction of H2O

09/09/2020

Q-142
Which of the following statements are TRUE for cellulose?
(A) Cellulose serves a structural role
(B) Cellulose is a branched polysaccharide
(C) Cellulose is a homopolysaccharide composed of (α1→4) linked D-glucose
units
(D) Cellulose is a homopolysaccharide composed of (β1→4) linked D-glucose units

09/09/2020

Q-141

In an experiment conducted in the dark, isolated chloroplasts are kept in buffer (pH 4.0) at 4 °C until their internal pH is equal to 4.0. Then, they are transferred to a buffer of pH 8.0, and ADP and Pi are added at the same time. Which of the following will happen?

(A) Chloroplasts will be destroyed
(B) Chlorophyll in the chloroplast will release bound Magnesium
(C) Chloroplasts will be intact but no ATP will be produced
(D) Chloroplasts will be intact and ATP will be produced

09/09/2020

Q-140

Match the entries in Group I with the entries in Group II
Group I Group II
P) DNA replication 1) Hershey and Chase
Q) Genetic Code 2) Miller and Urey
R) Life on Earth 3) Messelson and Stahl
S) DNA as Genetic material 4) Nirenberg and Khorana

(A) P-2, Q-1, R-3, S-4
(B) P-4, Q-3, R-2, S-1
(C) P-3, Q-4, R-2, S-1
(D) P-3, Q-4, R-1, S-2