在提到衰老背后的原因时,教授提到第一种生物钟理论:First,you have the biological clock category—theories in this category assert that all organisms have a sort of internal biological clock,that they are sort of genetically programmed to age in a certain age at a certain rate.即衰老是由生物内在...
plants, and the enormous variety and diversity of micro-organisms, we all have characteristics that we share. The same biochemical base, the same DNA as genetic material, and we're all based on the same proteins.我们知道这一点是因为，尽管生物、动物、植物和微生物的多样性令人难以置信，但我们都...
Now, minerals are not alive of course, so this is not evolution in quite the same sense you'd have in living organisms, but there do appear to be some parallels. Living organisms not only adapt to their environment, but also affect it, change the environment within which other organisms ...
Professor: Many organisms have developed the ability to survive in harsh environmental conditions: extreme heat or cold, or very dry conditions. Like plants in the desert. Your textbook doesn't have much about the specifics on desert plants, but I think that desert plants are great examples of...
Again, it's a term we use for any small organisms that float along with the current, either because they're too small or weak to swim against it, or because they don't have any capacity at all to move by themselves. 再说一下,这个术语被我们用来形容所有漂浮在水流中的小型生物,或因为它...
What do all eukaryotes have that prokaryotes do not have? a. cell membrane b. nucleus c. DNA d. cytoskeleton e. flagella Cell Membrane: The cell membrane is a critical component of the cell as it allows for selective diffusion of compounds in an...
A prevalence of right-handed ones…well, that would be really amazing!! Because the organisms that created them would be unlike anything we have on Earth, which produce only left-handed ones.
8.标题归纳题。 文章介绍了加拿大音乐家兼生物学家Tarun Nayar以“现代生物学”为名,借助真菌的生物电脉冲,创作出了美妙的“有机音乐” ,将科学与艺术完美结合。 由此可知B项“利用身边不起眼的生物创作音乐”能概括文章主旨,作标题最佳。 其中“Unassuming Organisms AroundUs”指代我们身边常见的真菌。反馈...
All organisms are composed of cells (cell theory). Species The visible form of each of the elements of consecrated bread and wine in the Eucharist. Organism An individual form of life, such as a bacterium, protist, fungus, plant, or animal, composed of a single cell or a complex of ...
Sagan proposes that algae organisms, which can live in extremely hot or cold atmospheres and at the same time produce oxygen, should be bred in conditions similar to those on Venus. As soon as this has been done, the algae will be placed in small rockets. Spaceships will then fly to ...