The Miller-Urey experiment attempted to simulate:
Photosynthesis
Respiration
Early Earth conditions to test the chemical origin of life
Formation of the ozone layer
Related Questions
Early Greek thinkers thought units of life called
spermata
cells
atoms
molecules
Which of the following is a critical argument against the theory of panspermia related to the origin of life on Earth?
Meteorites have been found to contain organic molecules.
Life on Earth shares a common genetic code.
Microbial life has been found in extreme environments on Earth.
The harsh conditions of space, including radiation and extreme temperatures, would likely destroy any known life forms during interstellar travel.
RNA is hypothesized to be the first genetic material because it can:
Form proteins directly
Repair DNA damage
Act as both a catalyst and store genetic information
Form a stable double helix
Which group of organisms is believed to be evolved first on earth?
Arthropods
Coelenterates
Protozoans
Reptiles
The evolution of which metabolic process significantly altered Earth's atmospheric composition?
Chemosynthesis
Fermentation
Photosynthesis
Respiration
The …A… from the sun broke up water into hydrogen and oxygen and the …B… escaped. Oxygen combined with ammonia and methane to form …C… . CO and others. The ozone layer was formed. As it cooled, the water vapour fell as rain, to fill all the depressions and form …D… Choose the correct option for A,B,C and D to complete the given paragraph, to NCERT textbook
A-IR rays, B-lighter , C-water, D-oceans
A-UV rays, B-lighter , C-water, D-oceans
A-UV rays, B-heavier , C-water, D-oceans
A-UV rays, B-heavier , C-water, D-oceans
Which of the following was formed in S Miller’s experiment?
Amino acids
Nucleic acids
UV radiations
Microspheres
Origin of life as a result of chemical evolution has been properly explained by or the most logical biochemical theory of origin of life has been given by
Stanley Miller
Darwin
A I Oparin
S Fox
Origin of life occurred in
Precambrian
Coenozoic
Palaeozoic
Mesozoic
The concept that the species have changed over a long period of time is know as
Ecosystem
Spontaneous generation
Organic evolution
Genetic recombination
