A researcher observes an isolated system containing complex organic molecules undergoing spontaneous self-assembly into membrane-bound structures. These structures exhibit rudimentary metabolism but no reproduction or heritability. Which characteristic of life is the MOST significant barrier preventing these structures from being classified as living organisms?
Metabolism
Cellular organization
Reproduction and growth
Adaptation
Related Questions
A scientist discovers a novel entity exhibiting complex organic molecules, compartmentalization, and energy transformation. However, it lacks a definitive cellular structure and doesn't demonstrate heritability. Which characteristic of life is MOST definitively absent in this entity?
Metabolism
Reproduction and growth
Adaptation
Response to stimuli
Viruses exhibit characteristics of both living and non-living entities. Which of the following properties of viruses MOST strongly supports the argument AGAINST their classification as living organisms?
Presence of genetic material (DNA or RNA)
Ability to evolve and adapt to their environment
Inability to reproduce independently outside a host cell
Specific interaction with host cells
Select the correct statement from the following statements
I. Increase in mass and increase in number of individuals are twin characteristics of growth
II. Metabolic reactions can also be demonstrated outside the body in isolated cell-free systems
III. โResponse to stimuliโ is a defining property of living organisms
I and II
II and III
I and III
I, II and III
Imagine a synthetic life form created in a lab that uses a novel information storage molecule distinct from DNA or RNA, but still exhibits heritability and undergoes evolution. Which of the following aspects of the current definition of life would MOST require reconsideration in light of this discovery?
The requirement for cellular structure
The dependence on carbon-based chemistry
The specific molecular basis of heredity
The ability to respond to environmental stimuli
The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for
reproduction
growth and movement
response to stimuli
invitro reactions
Which of the following is not a defining feature of living organism?
Organization
Metabolism
Movement
Reproduction
The living organisms can be unexceptionally distinguished from the non โ living things on the basis of their ability for
Reproduction, growth and response to stimuli
Interaction with the environment
Movement and locomotion
Consumption of energy
Prions, infectious protein particles, can induce conformational changes in normal proteins, leading to diseases like Creutzfeldt-Jakob disease. While exhibiting self-propagation, prions lack genetic material. Do prions challenge the conventional definition of living organisms, and why?
No, because they are composed of organic molecules.
Yes, because they lack heritable genetic material yet exhibit a form of 'reproduction'.
No, because they interact with living organisms.
Yes, because they cause disease.
Read the following features and select the correct option from the options given below with respect to living beings
I. They reproduce
II. They metabolise
III. They have cellular organisation
IV. They have ability to respond to stimuli
I and III are true
I and II are true
Only III is true
All are true
Among the following listed features, which is not a unique feature of living organisms?
Adaptation
Reproduction
Growth
Response to stimuli