But ther e is on e frog that is different from other frogs. It is woo d frog. T his frog can freeze(冰冻).T his frog can thaw (解冻). T his frog can wak e up from a frozen(冷冻的) sleep.""How can a frog wak e up from a frozen sleep?" ask e d th e class. "How ...
★★★In Alaska, wood frogs freeze for seven months.thaw (回到正常温度) and hop away.Each September, the wood frogs of Alask a do a very strange thing: They freeze. They do not freeze totally and two-thirds of their body water turns to ice. If you picked them up, they would not ...
“There’s pretty complex chemistry behind it,” says McClelland, “but basically (wood frog) cells produce a type of antifreeze that prevents the water from expanding and bursting their cells when it freezes solid. The reason the rest of us can’t freeze solid is because our bodies have s...
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This was supported by the physiology of frogs post-freeze, specifically, the persistence of elevated glucose levels in muscles important during locomotion. Collectively, these findings suggest that reductions in locomotor performance observed immediately following a freeze-thaw cycle are driven by ...
根据"They freeze themselves to survive (幸存) the cold winter condition."可知,树蛙冻住自己是为了在寒冷的地方存活。故选A。(2)D细节理解题。根据"It's just like having a lot of barcodes in the head so that they can remember a lot of things."可知,山雀的大脑像条形码一样亮起来。故选D。(...
Frogs are cold-blooded animals, which means their body temperature is equal to the temperature around them because, like insects and snakes, they can’t control it themselves. They prefer warmth, and they certainly don’t want to freeze to death. So, prior to winter weather they bulk up wi...
The theory goes that the males display their strength, stamina and other fine traits by their volume and sustained songs. These enchanted amphibians are more a harbinger of true spring than robins, which can be seen at your birdfeeder all winter long. ...
Female Professor: Well, you tell me.In frogs, the extra glucose makes it harder for the water inside the cells to freeze,so the cells stay just slightly wet—enough so that they can survive the winter.Then after that, the heart stops beating altogether.So, is that the same?
During the winter there are some frog species that freeze solid. In the spring, they seem to thaw out and come back to life. Explain this process and special adaptations that make it possible. Most frog species have a distinct tadpole life s...