【多选题】【消耗次数：1】
下列哪种蛋白质在pH值等于5.0的溶液中带正电荷
①
pI为4.5的蛋白质
②
pI为4.7的蛋白质
③
pI为7.0的蛋白质
④
pI为6.5的蛋白质E
⑤
pI为3.5的蛋白质
参考答案：
复制
纠错
相关题目
【单选题】
为改善膳食中蛋白质质量，在膳食中应有一定量的优质蛋白质，一般要求动物性蛋白质和大豆蛋白质应占膳食蛋白质总量的（? )
①
20-30%
②
40-50%
③
大于60%
④
50-60%
【单选题】
如果一种食物蛋白质所含必需氨基酸种类齐全,但是氨基酸模式与人体蛋白质的氨基酸模式差异较大,则这种蛋白质属于:
①
不完全蛋白
②
完全蛋白质
③
半完全蛋白质
④
无法判断
随机题目
【单选题】
According to the author, in order to have a good command of English one must ____.
①
employ as many learning strategies as possible
②
expect to gain an easier task
③
exert oneself constantly
④
sustain oneself
【单选题】
Mr. Brown had hardly said a word since supper,___ had his wife.
①
either
②
or
③
nor
④
so
【单选题】
______ bad cold she spent the entire day in bed.
①
As if
②
Even though
③
In addition
④
Due to
【单选题】
Modesty helps one to go forward, ______ conceit makes one lag behind.
①
whenever
②
only if
③
whereas
④
consequently
【单选题】
A pen pal provides good motivation for your writing because he or she ____.
①
lives far away from you
②
knows China a lot so that you can have a lot to talk about
③
also keeps a diary
④
may inform you of many interesting things in his or her culture
【单选题】
As for words which do not often occur in everyday situation, you just need to be able to ____.
①
recognize them
②
nod at them
③
concentrate much on them
④
practice using them constantly
【单选题】
According to the text, which of the following is NOT one of the possible activities for you to practice speaking English at school?
①
To talk to native speakers on campus.
②
To speak English to the waitress in English as you pay for a meal in a restaurant.
③
To rehearse aloud by yourself.
④
To talk with your classmates in English.
【单选题】
The place did not seem to be popular, for it was completely deserted, and in any case _____ to traffic.
①
inaccessible
②
inadequate
③
insignificant
④
incompatible