科学研究   常速英语

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We're going to do a head-to-head contest between asexual cloning and sexual reproduction. And I'm going to need-- perhaps you've been wondering what these fruits and vegetables are for up here ...

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RNA is an informational molecule. If one would want a simple analogy for it, you might use the analogy of a video tape. It has a linear array of information, which by itself is typically thought of no...

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So here's our bacterium here and behind it will be these long strands that are the bundle forming pillus. They're going to adhere to the microvilli, these wiener-like structures, this is what's on...

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Adenosine triphosphate, or ATP, is the molecule that powers all life on Earth. Energy from ATP is required for essential activity, including pumping ions across membranes and pulling apart the DNA he...