- A hot, shallow ocean containing complex proteins.
- A deep-sea hydrothermal vent system with mineral-rich water.
- A body of water on early Earth rich in organic molecules formed from inorganic precursors.
- A sterile, oxygen-rich environment where life began.
Category: Biology etea medical mcqs
- Rabbits change their fur color to match the environment.
- Rabbits with fur color that blends with the environment are more likely to survive and reproduce.
- All rabbits eventually develop camouflage fur.
- The predator learns to ignore rabbits with certain fur colors.
- Divine intervention; random mutation
- Use and disuse; pre-existing heritable variation
- Environmental pressure; individual effort
- Conscious will; acquired characteristics
- Directly causes beneficial mutations in organisms.
- Selects for individuals with pre-existing variations that are advantageous.
- Induces acquired characteristics in organisms.
- Provides a fixed blueprint for species evolution.
- All individuals in a population reproduce at the same rate.
- Individuals with advantageous traits are more likely to pass on their genes to the next generation.
- Only the largest individuals reproduce.
- Reproduction rates are solely determined by geographic location.
- The strongest and fastest individuals.
- Individuals best adapted to their environment.
- Individuals that can outcompete others for mates.
- Individuals that live the longest lifespan.
- Mating partners only.
- Resources, space, and mates.
- Avoiding predation exclusively.
- Achieving a higher level of complexity.
- Adaptation to the environment.
- Change in species over time.
- Inheritance of traits.
- Differential survival and reproduction based on inherent variation.
- All organisms in a population can successfully reproduce.
- Organisms produce more offspring than the environment can sustain.
- Every offspring produced will reach reproductive age.
- Genetic mutations lead to an excess of new traits.
- Eyes would gradually become larger and more sensitive.
- Eyes would gradually reduce in size and function due to disuse.
- Eyes would adapt by developing bioluminescent properties.
- Eyes would remain unchanged, as the environment offers no selective pressure.
- The role of genetic recombination in variation.
- The non-heritability of somatic cell changes.
- The concept of common descent.
- The mechanism of natural selection.
- Organisms constantly strive for perfection.
- Traits acquired during an organism's lifetime can be inherited by offspring.
- Environmental changes drive evolutionary adaptations.
- Natural selection acts on existing variations within a population.
- Random mutations providing a survival advantage.
- Individuals stretching their necks to reach high leaves, and this trait being passed on.
- Differential survival of giraffes with naturally longer necks.
- Genetic drift leading to neck elongation over generations.
- Complex life forms emerged directly from inorganic matter.
- Simple organic molecules first formed, then self-assembled into more complex structures that eventually gained biological properties.
- Living organisms were transported to Earth from outer space.
- All life originated from a single, highly advanced protocell.
- Inherit a predisposition for stronger muscles.
- Be born with inherently stronger muscles.
- Develop stronger muscles only if they also exercise.
- Show no inherited changes in muscle mass due to parental exercise.
- Perform complex photosynthesis.
- Maintain an internal environment distinct from their surroundings.
- Replicate their genetic material independently.
- Develop rigid cell walls for protection.
- Organic molecules would have formed more rapidly.
- Complex polymers would have easily self-assembled.
- The formation of organic molecules would have been inhibited or reversed.
- Protocells would have developed complex metabolic pathways.
- Continuous heating of water in the flask.
- Presence of a condenser for cooling.
- Electrical discharges through the gaseous mixture.
- Collection of condensed liquid in a trap.
- Geothermal heat from volcanic activity.
- Chemical energy from deep-sea vents.
- Ultraviolet radiation and lightning.
- Photosynthesis by early autotrophs.
