Theory of Chemical Evolution

Q. 'The Hot Dilute Soup' was a phrase used by

1. Louis Pasteur
2. Haldane
3. Charles Darwin
4. Jean Baptiste Lamarck

Q.

Coacervate is a colloid-like structure.

1. False
2. True

Q. According to the theory of biochemical evolution, life originated from matter.

1. inorganic
2. extra-terrestrial
3. organic

Q. Gaia hypothesis was formulated by which of the following chemists?

1. John Dalton
2. James Lovelock
3. Antoine Lavoisier
4. Joseph-Louis Proust

Q. was absent in Earth's atmosphere at the time of origin of life.

1. $O_2$
2. $N{H}_3$
3. $H_2$

Q. Which of the following is the correct sequence of events in the origin of life based on theory of chemical evolution?
I. Formation of protobionts
II. Synthesis of simple organic compounds
III. Synthesis of complex organic compounds
IV. Formation of nucleic acids as genetic material

1. II $\Rightarrow$ III $\Rightarrow$ IV $\Rightarrow$ I
2. I $\Rightarrow$ II $\Rightarrow$ III $\Rightarrow$ IV
3. I $\Rightarrow$ III $\Rightarrow$ II $\Rightarrow$ IV
4. II $\Rightarrow$ III $\Rightarrow$ I $\Rightarrow$ IV

Q. The theory of biochemical evolution of life was advocated by

1. Oparin
2. Pasteur
3. Haldane
4. Darwin

Q.

What is slow process in thermodynamics?

Q. Primitive earth's atmosphere did not contain ___.

1. ammonia
2. nitrogen
3. oxygen
4. hydrogen

Q. Origin of life on primitive Earth occurred in:

1. Air
2. Comets
3. Volcanic mountains
4. Water

Q. Choose the correct order of changes from the primitive earth to formation of first cells.

1. Combination of atoms to form molecules $\to$ Protobionts $\to$ Hot dilute soup $\to$ Coacervates $\to$ First cells
2. Combination of atoms to form molecules $\to$ Hot dilute soup $\to$ Protobionts $\to$ Coacervates $\to$ First cells
3. Hot dilute soup $\to$ Combination of atoms to form molecules $\to$ Coacervates $\to$ Protobionts $\to$ First cells
4. Combination of atoms to form molecules $\to$ Hot dilute soup $\to$ Coacervates $\to$ Protobionts $\to$ First cells

Q. Autotrophs like blue green algae had no impact on primitive earth.

1. True
2. False

Q. The concept of chemical evolution is based on possible origin of life

1. Possible origin of life by combination of chemicals under suitable environmental conditions
2. Effect of solar radiation on chemicals
3. Crystallization of chemicals
4. Interaction of water, air and clay under intense heat

Q. Lightest element hydrogen was found in the innermost layer of the earliest earth.

1. True
2. False

Q. Q. living beings can develop from other living beings is called _______
(a) Evolution
(b) Abiogenesis
(c) Inheritance
(d) Biogenesis

Q. Which of the following are correct?

(i) Iron, nickel, aluminium - Crust
(ii) Nickel, iron - Core
(iii) Aluminium, silicon - Crust
(iv) Silicon, Aluminium - Core

1. (i), (ii)
2. (i), (iii)
3. (ii), (iii)
4. (i), (ii)

Q. Which element was found in primitive earth's core?

1. H
2. Si
3. Al
4. Fe

Q. Pick the correct statement(s) about the theory of chemical evolution.

1. Life originated from abiotic components
2. Earth's atmosphere did not contain oxygen
3. Life came from extra-terrestrial source
4. UV rays, solar radiation and lightning were the main sources of energy

Q. Life is believed to have originated in

1. The primordial atmosphere of the earth
2. The freshwaters of primitive earth
3. The oceans of primitive earth
4. The primordial lithosphere of the earth

Q. What are coacervates?

1. Radiations
2. DNA
3. Protobiont
4. Colloidal particles

Q.

How does first human being come into existance

Q. Two scientists, Urey and Miller performed an experiment to prove that life originated from inorganic substances. Whose theory does it support?

1. Darwin
2. Lamarck
3. Oparin and Haldane
4. Hugo de Vries

Q. Origin of life on primitive Earth occurred in:

1. Air
2. Comets
3. Water
4. Volcanic mountains

Q. "Life developed from simple inorganic molecules which were present on the Earth". This theory was proposed by:

1. Darwin
2. Urey
3. Miller
4. Haldane

Q. The earliest atmosphere of the primitive earth contained the following substances:

1. $H_{2}andC{H}_4$
   
2. Water vapour
3. $N{H}_3$
4. $C{H}_4$

Q.

what is:-

a) biological change ?

b) physiochemical change?

Q. The first organisms on primitive earth were

1. Competition within closely related species
2. Reduced feeding efficiency in one species
3. Intraspecific competition
4. Interspecific competition

Q. One of the early possible source(s) of energy for chemical reactions were/was:

1. green plants
2. chlorophyll
3. carbon dioxide
4. UV rays and lightning

Q. Match the terms to these definitions:
Heterotrophy, autotroph, evolution, prokaryote, microsphere, ozone shield, chemoheterotroph, protocell
.......... Formed from oxygen in the upper atmosphere, it protects the earth from ultraviolet radiation.

Q. Match the words in column I with those of column II