Bio Exam Study Guide
Chapter 17
Louis Pasteur's experiment illustrated that: microbes will not grow in a nutrient broth that has been sterilized unless air is allowed to enter the vessel through an opening.
Living organisms can spontaneously generate from nonliving matter. True or False?
False
The scientists usually given credit for disproving the theory of spontaneous generation of bacteria are:
Tyndall & Pasteur
Miller and Urey's experiments attempting to recreate the prebiotic environment produced a rich mixture of complex organic chemicals from simple chemicals. True or False?
True
Miller and Urey's experiments attempting to recreate the prebiotic environment produced prokaryotic cells. True or False?
False
The theory that life began in the distant past from nonliving molecules that became able to reproduce themselves is called:
Prebiotic evolution
Some scientists theorize that early life was RNA-based. True or False?
True
Miller and Urey's experiments to simulate prebiotic evolution produced: a rich mixture of organic molecules
Some RNA molecules have been discovered that can:
Act as enzymes.
RNA molecules that function as enzymes:
Are called Ribozymes
The outer boundaries of laboratory-created vesicles are most similar to:
Cell membranes
The scenario of prebiotic evolution leading to the origin of life on Earth is plausible because: there was a vast period of time for simple chemicals to evolve into complex cells.
One theory holds that the first self-replicating molecules were:
RNA
The experiments that demonstrated that meat does not spontaneously generate maggots were conducted by:
Francisco Redi
RNA can act like an enzyme. True or False?
True
Organisms that have complex internal membranes are prokaryotic. True or False?
False
Mitochondria contain their own DNA, separate from that of the rest of the cell. True or False?
False
Which is the correct series of events in the evolution of life on Earth? photosynthesis → O2 → aerobic metabolism
Louis Pasteur's experiment illustrated that: microbes will not grow in a nutrient broth that has been sterilized unless air is allowed to enter the vessel through an opening.
Living organisms can spontaneously generate from nonliving matter. True or False?
False
The scientists usually given credit for disproving the theory of spontaneous generation of bacteria are:
Tyndall & Pasteur
Miller and Urey's experiments attempting to recreate the prebiotic environment produced a rich mixture of complex organic chemicals from simple chemicals. True or False?
True
Miller and Urey's experiments attempting to recreate the prebiotic environment produced prokaryotic cells. True or False?
False
The theory that life began in the distant past from nonliving molecules that became able to reproduce themselves is called:
Prebiotic evolution
Some scientists theorize that early life was RNA-based. True or False?
True
Miller and Urey's experiments to simulate prebiotic evolution produced: a rich mixture of organic molecules
Some RNA molecules have been discovered that can:
Act as enzymes.
RNA molecules that function as enzymes:
Are called Ribozymes
The outer boundaries of laboratory-created vesicles are most similar to:
Cell membranes
The scenario of prebiotic evolution leading to the origin of life on Earth is plausible because: there was a vast period of time for simple chemicals to evolve into complex cells.
One theory holds that the first self-replicating molecules were:
RNA
The experiments that demonstrated that meat does not spontaneously generate maggots were conducted by:
Francisco Redi
RNA can act like an enzyme. True or False?
True
Organisms that have complex internal membranes are prokaryotic. True or False?
False
Mitochondria contain their own DNA, separate from that of the rest of the cell. True or False?
False
Which is the correct series of events in the evolution of life on Earth? photosynthesis → O2 → aerobic metabolism