Cell and Molecular Biology Nptel Week 1 Answers
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Cell and Molecular Biology Nptel Week 1 Answers (July-Dec 2025)
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Question 1. Which layer of the earth contains molten magma?
a) Pyrosphere
b) Baryosphere
c) Lithosphere
d) Atmosphere
Question 2. Abiogenesis states that____(i)____and it was disapproved by (ii)
a) (i) GOD is the creator of Earth and Organisms (ii) Louis Pasteur’s experiment
b) (i) Non-living matter give rise to organisms (ii) Redi’s experiment
c) (i) Chemical molecules give rise to generation of organisms (ii) Redi’s experiment
d) (i) Life has no beginning or end (ii) Louis Pasteur’s experiment
These are Cell and Molecular Biology Nptel Week 1 Answers
Question 3. Spallanzani’s experiment can be used to test the validity of
a) Theory of panspermia
b) Theory of eternity of life
c) Theory of special creation
d) Theory of spontaneous generation
Question 4. Eobionts are the precursors of primary cells. Which of the following is correct for eobionts?
a) These are colloidal aggregate with membrane like boundary
b) These are coacervate along with RNA
c) These are coacervates along with RNA, DNA, protein and fully developed biomembrane
d) These are coacervate without amino acids
These are Cell and Molecular Biology Nptel Week 1 Answers
Question 5. To support the chemical theory of evolution, Urey and Miller conducted an experiment, where they mimicked the primitive earth condition. Among below which is the correct option regarding atmosphere
a) H₂, CH₃, NH₃, H₂O
b) H₂, CH₄, NH₄, H₂O (Vapor)
c) H₂, CH₄, NH₃, O₂, H₂O (Vapor)
d) H₂, CH₄, NH₃, H₂O (Vapor)
Question 6. The idea of chemical theory was put forwarded by
a) Stanley Miller and Harlod Urey
b) Alexander Oparin and J.B.S Haldane
c) Svante Arrhenius
d) Walter Gilbert
Question 7. Which is the correct hierarchical order of organism evolution?
a) Fish → Amphibians → Birds → Reptiles → Mammals
b) Amphibians → Fish → Birds → Reptiles → Mammals
c) Fish → Amphibians → Reptiles → Birds → Mammals
d) Amphibian → Fish → Birds → Reptiles → Mammals
Question 8. Analogous organs are those which are
a) Functionally and structurally distinct
b) Structurally and functionally the same
c) Structurally same but functionally the different
d) Structurally different but functionally the same
These are Cell and Molecular Biology Nptel Week 1 Answers
Question 9. Gradual modification bring changes in the organ or tissue level. Crocodile heart is
a) 2 chambered
b) 3 chambered
c) 4 chambered
d) Pseudo 4 chambered
Question 10. Peripatus is the connecting link between
a) Reptile and Annelid
b) Annelid and Arthropod
c) Annelid and Mollusk
d) Arthropod and Mollusk
Question 11. Which geological timescale is chronologically correct, from the oldest onwards?
a) Archeozoic → Proterozoic → Mesozoic → Paleozoic → Cenozoic
b) Archeozoic → Paleozoic → Proterozoic → Mesozoic → Cenozoic
c) Archeozoic → Proterozoic → Paleozoic → Mesozoic → Cenozoic
d) Archeozoic → Paleozoic → Mesozoic → Proterozoic → Cenozoic
These are Cell and Molecular Biology Nptel Week 1 Answers
Question 12. “Origin of Species” book was written by
a) Alfred Russel Wallace
b) Charles Darwin
c) Charles Lyell
d) Lamarck
Question 13. According to Hugo de Vries’s mutation theory, evolution is a
a) Continuous and sudden process
b) Continuous and gradual process
c) Discontinuous and gradual process
d) Discontinuous and sudden process
Question 14. What are retrogressive plants
a) Plants with newer traits
b) Plants that had reduced or lost traits compared to parents
c) Plants with low survivability
d) Plants that are unstable, resembles parents as well as at times produced variants
Question 15. Darwin’s Theory of pangenesis was disapproved by
a) Carl Correns
b) August Weismann
c) Zemann
d) Odum
These are Cell and Molecular Biology Nptel Week 1 Answers
