奠腊魔老行人挛嘉动拷俊断每
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起止时间:2020-03-16到2020-05-31
更新状态:已完结
Chapter 1 EST Reading 单元测验2
1、 1. a doctor engaged in the research of aeromedicine
答案: 航空医学
2、 2. measures to prevent cybercrime
答案: 网络犯罪
3、 3. a new type of defroster
答案: 除霜器
4、 4.a toy powered by photocells
答案: 光电管
5、 5. a car equipped with an autoalarm
答案: 自动报警器
6、 6. soundproof material
答案: 隔音
7、 7. a widely applied pesticide
答案: 杀虫剂
8、 8. an experiment with radiocarbon
答案: 放射性碳
9、 9.the development of telecommunication
答案: 电信
10、 10. a multi-purpose machine tool
答案: 多用途
Chapter 3 Scientific Writing 20200425_第7周作业_选择题
1、 Most of the properties associated with processes of life are properties of _
A:the nucleus
B:DNA
C:the cytoplasm
D:endosymbionts
E:none of the above
答案: the cytoplasm
2、 Ribosomes______
A:are organelles involved in protein synthesis
B:are the cell’s main energy source
C:are storage sites for starch
D:are involved in the breakdown of proteins
E:store genetic information in the form of DNA
答案: are organelles involved in protein synthesis
3、 The process of phagocytosis involves_____
A:exocytosis
B:intake of water by a cell’s vacuole
C:vacuolar engulfing of particulate matter
D:expulsion of particulate matter from a ce
E:expulsion of water from a cell
答案: vacuolar engulfing of particulate matter
4、 Lysosomes contain____
A:hydrolytic enzymes
B:genetic material
C:stored fats
D:proteins
E:carbohydrates
答案: hydrolytic enzymes
5、 Ribosomes are manufactured in_____
A:Cytoplasm
B:nucleoli
C:rough endoplasmic reticulum
D:smooth endoplasmic reticulum
答案: nucleoli
6、 Smooth endoplasmic reticulum (SER) _____
A:lacks ribosomes
B:is active in fat and steroid synthesis
C:is involved in the oxidation of toxins
D:all of the above
E:none of the above
答案: all of the above
7、 Transformation of energy and storage of energy in the cell are the main function of _____
A:microbodies
B:contractile vacuoles
C:mitochondria
D:ribosomes
E:smooth endoplasmic reticulum
答案: mitochondria
8、 In the mitochondria, enzymes involved in ATP generation are ____
A:located within the matrix
B:associated with polysomes
C:located on the cristae
D:located on ribosomes in the matrix
E:dispersed throughout the cristae and matrix
答案: located on the cristae
9、 Chromoplasts are a type of _____
A:pigment
B:storage bin
C:nutrient tank
D:plastid
E:none of the above
答案: plastid
10、 An mRNA molecule and its associated ribosomes make up____
A:a multisome
B:a monosome
C:a polysome
D:a lysosome
E:none of the above
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