When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point. Study showed that it is an unusual kind of protein. It has many small sugar molecules held in special positions within each big ...
根据第五段第三句话“When the temperature outside increases, the frog thaws along with its surroundings.(当外面的温度升高时,树蛙会随着周围环境解冻。)”可知,树蛙的温度随着周围环境的温度变化。故选D项。 (4)C 解析:推理判断题。根据第二段第一句“The wood frog's ability to freeze its body is...
The second type of warning that has to do with cold weather and extremely cold temperatures is a freeze warning. We’ll also cover frost advisories. A Freeze Watch is issued when there is a potential for significant, widespread freezing temperature within the next 24-36 hours. This type of ...
How does the animal use the property of freezing point depression to survive?In Solid Phase Peptide Synthesis (SPPS), what does freeze-drying or lyophilization mean?The normal freezing point of n-octane is -57 degrees Celsius. In what temperature range is the freezing of n-octane a non-...
What colligative property is responsible for antifreeze? Predict the van't Hoff factor for a 2.0 M solution of NaCl and distilled water when the solution is 50 mL and the solute is 5.85 g NaCl. Is freezing a chemical reaction? At what temperature does sugar dissolve in water? At which tem...
A) They maintain an unusually high body temperature. B) A special tissue in their eyes enables them to see through ice. C) Special proteins make their blood circulate too fast to freeze. D) Ice crystals in their bodies are prevented from growing large enough to harm them. Answer: D ...
temperature.Water forced out of the frog's other cells freezes as well. But a special solution D. They are not harmed by the body-freezing process.produced inside the frog acts like antifreeze in a car, protecting the cells 14. It can be learnt from Paragraph 5 that a In cold ...
Scientists studied the fish's blood and measured its freezing point.The fish were taken from seawater that had a temperature of1.88℃and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to2.05℃. That small ...
Slush is made bya mixture of sugar and water. ... The sugar acts as an antifreeze in the solution. The slush machine stirs or rotates the mixture at a constant speed so that the sugar and water molecules bond together before the water gets a chance to freeze. In this way, a soft, ...
By doing so, you’ve activated the compressor to compress and hike the temperature of the refrigerant. After activation, the refrigerant is then sent through the condenser, where the heat is lost. Next, the refrigerant goes through the dryer and is purified of contaminants. Once purified, the...