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【单选题】
Which of the following is true about the holoenzyme in an open complex?A.
The DNA is bound mainly to the sigma-subunit.
B.
There no interaction between the sigma factor and the -10 region.
C.
There are two Na+ ions in the core enzyme .
D.
Region 2.4 of the sigma-factor binds to the -35 region.
E.
The DNA is bound mainly to the sigma-subunit and there no interaction between the sigma factor and the -10 region are both true.
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【单选题】The soft palate is tissue that forms the posterior roof of the oral cavity. From it hangs a soft, fleshy, V-shaped mass called the_____.
A.
epiglottis
B.
papillae
C.
uvula
D.
palatine tonsil
【简答题】CT images of internal organs, bones, soft tissue and blood vessels provide ___________ (great) detail than traditional x-rays, particularly of soft tissues and blood vessels.
【单选题】Which organ system provides support, protection of soft tissue, mineral storage, and blood formation?
A.
integumentary
B.
muscular
C.
skeletal
D.
nervous
E.
endocrine
【单选题】The female breast is a complex structure with________surrounded by supporting and fat tissue
A.
soft tissue
B.
glandular tissue
C.
adipose tissue
D.
connective tissue
【单选题】“良辰美景奈何天,赏心乐事谁家院？”这两句出自《牡丹亭》中的（ ），是杜丽娘游园时所唱。
A.
第十出《惊梦》
B.
第十二出《寻梦》
C.
第二十出《闹殇》
D.
第二十五出《忆女》
【单选题】In soft tissue, a beam of 9 MeV electrons loses most of its energy by
A.
Bremsstranhlung radiation
B.
Ionizaiton
C.
Compton interactions
D.
Collisions with nuclei
E.
Pair production
【判断题】Fibrosarcoma, as a subtype of soft tissue sarcoma, originates from fibroblasts.
A.
正确
B.
错误
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