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55%
Level 3: 35%-60%
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The property of semipermeability belongs to
1. cell wall
2. plasma membrane
3. mitochondria only
4. None of the above
2. plasma membrane
3. mitochondria only
4. None of the above
75%
Level 2: 60%+
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Translocation of photosynthetic end products in sieve tubes is
1. 3-5 mm/h
2. 3-5 cm/h
3. 1-5 cm/h
4. 60-100 cm/h
2. 3-5 cm/h
3. 1-5 cm/h
4. 60-100 cm/h
Subtopic: Photosynthesis Transpiration Compromise & Mineral Translocation |
Level 3: 35%-60%
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71%
Level 2: 60%+
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The pH of stomach is 1.6, then which enzyme will digest protein?
1. Trypsin
2. Pepsin
3. Amylase
4. Erypsin
2. Pepsin
3. Amylase
4. Erypsin
68%
Level 2: 60%+
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The normal type of embryo sac is 8-nucleated and
1. 8-celled
2. 7- celled
3. 6-celled
4. 5-celled
82%
Level 1: 80%+
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63%
Level 2: 60%+
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Subtopic: Human Immune System |
63%
Level 2: 60%+
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