皮皮学，免费搜题
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【单选题】
大多数药物排泄的主要途径是A.
肾脏
B.
肝脏
C.
消化道
D.
呼吸道
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皮皮学刷刷变学霸
举一反三
【多选题】What types can chromatin be divided into ( )
A.
Euchromatin
B.
Heterochromatin
C.
X chromatin
D.
Y chromatin
【单选题】Chromatin in which of the following states is the most euchromatic?
A.
in a Barr body
B.
in the centromere
C.
in a transcribed gene during G1 phase
D.
in a silenced gene during M phase
E.
in a sperm nucleus
【简答题】活性染色质(active chromatin)
【单选题】About the chromatin, which is not right?________
A.
Chromatin consists of DNA and RNA only.
B.
Histone proteins are alkalic and postively charged.
C.
The nucleosome core protein consists of eight histone subunits.
D.
H1 histone is not found in the core protein.
【简答题】染色质(chromatin)
【单选题】Histones are responsible for the first and most fundamental level of chromatin packing, the nucleosome, which was discovered in _____.
A.
1958
B.
1962
C.
1968
D.
1974
【简答题】性染色质( chromatin)
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