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刷刷题刷刷变学霸
举一反三
【单选题】There are approximately three quarters of a ton of termites (白蚁) for every person on Earth. It now turns out that these critters may be helping to alter the climate and affect man’s life. For years sc...
A.
It is the production by termites that is now of greater concern.
B.
What scientists worry more about is the output from burning fuels.
C.
The output from burning fuels is now rising steadily.
D.
The burning of fuels generates much less carbon dioxide than termites do.
【单选题】核小体串珠状结构的珠状核心蛋白质是
A.
非组蛋白
B.
H2A、H2B、H3、H4各二分子
C.
H2A、H2B、H3、H4各四分子
D.
H2A、H2B、H3、H4各一分子
E.
刚组蛋白与140-145碱基对DNA
【单选题】There are approximately three quarters of a ton of termites (白蚁) for every person on Earth. It now turns out that these critters may be helping to alter the climate and affect man's life. For years sc...
A.
low temperatures are created by using a house
B.
the house is made green in order to keep heat
C.
heat is prevented from escaping outside
D.
everything is kept green in a house
【单选题】核小体串珠状结构的珠状核心蛋白是（）。
A.
H2A，H2B，H3，H4各1个分子
B.
H2A，H2B，H3，H4各2个分子
C.
H1组蛋白以及140-145碱基对DNA
D.
非组蛋白
E.
H2A，H2B，H3，H4各4个分子