5 Questions
What are biological molecular machines used for?
Biological molecular machines are used to transport cargo within a cell, power the movement of organisms, synthesize proteins, and separate strands of DNA.
What are the general features of molecular machines mentioned in the text?
Molecular machines are of nanometer size, protein-based in nature, and depend on ATP or energy stored in electrochemical gradient to generate mechanical force via conformational changes in their structure. Biological molecular machines are either rotary or linear.
What are some examples of artificial molecular machines mentioned in the text?
DNA-based molecular motors, walkers, tweezers, gears, springs, robots, transporters, and interlocked structures such as DNA rotaxanes and catenanes.
What is the function of ATP synthase?
ATP synthase, also called F0F1-ATPase, is a rotary form of motor that catalyzes the synthesis of adenosine triphosphate (ATP) from adenosine diphosphate (ADP) and inorganic phosphate using the energy stored in a proton gradient.
What is the difference between rotary and linear molecular machines?
Rotary molecular machines operate by rotating components, while linear molecular machines operate by moving along a linear track.
Test your knowledge of molecular machines with this introductory quiz. Explore the functions and mechanisms of biological molecular machines, including kinesin, bacterial flagellar motors, ribosomes, and helicases.
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