大学MOOC 细胞生物学（2020春）(江南大学)1450814223 最新慕课完整章节测试答案

BiomembraneStructure-test

1、单选题：
All the following statements describe biomembranes except:​‏​
选项：
A: Different biomembranes may contain different proportions of the same phospholipids.
B:  The two leaflets of a biomembrane may contain different phospholipids.
C:  Some biomembranes have free edges.
D: Some phospholipids and cholesterol may cluster to form lipid rafts.  
答案: 【  Some biomembranes have free edges.】

2、单选题：
‎ The major site of lipid synthesis in eukaryotic cells is the‍
选项：
A: Nucleus
B: Endoplasmic reticulum
C: Mitochondria
D: Cell membrane
答案: 【 Endoplasmic reticulum】

3、单选题：
Phospholipids with short or unsaturated fatty acyl chains​​
选项：
A: decrease membrane fluidity.
B: increase membrane fluidity.
C:  cause biomembranes to become thicker
D: allow hydrophilic molecules to diffuse across the lipid bilayer.
答案: 【 increase membrane fluidity.】

4、单选题：
 The _______ are transmembrane proteins.‎‎
选项：
A: lipid-anchored membrane proteins
B: integral membrane proteins
C: peripheral membrane proteins
D: extracellular matrix proteins
答案: 【 integral membrane proteins】

5、单选题：
Glycolipids and glycoproteins are especially abundant in the‌
选项：
A:  nucleus.
B: mitochondrial inner membrane
C: cytosol
D: plasma membrane
答案: 【 plasma membrane】

6、单选题：
Phosphate containing lipids include all of the following except ‌
选项：
A:  phospholipids.
B: sphingolipid
C: triglyceride
D: phosphatidylinositol
答案: 【 triglyceride】

7、判断题：
‏A lipid bilayer is the fundamental structural component of all cell membranes.‍‏‍
选项：
A: 正确
B: 错误
答案: 【 正确】

8、判断题：
‏Maintenance of the lipid bilayer in the plasma membrane requires special enzymes and the hydrolysis of ATP.‌‏‌
选项：
A: 正确
B: 错误
答案: 【 错误】

9、填空题：
‎The most abundant lipids in cell membranes are ________________.‏‎‏
答案: 【 phospholipids】

10、填空题：
‌Sugar-containing lipids called ____________ are found only in the outer half of the bilayer and their sugar groups are exposed ac the cell surface.‏‌‏
答案: 【 glycolipids】

CellularEnergetics

1、单选题：
‎Where does glycolysis takes place?‎
选项：
A: Mitochondrial matrix
B: Cytosol
C: Mitochondrial intermembrane space
D: Mitochondrial inner membrane
E: Mitochondrial outer membrane
答案: 【 Cytosol】

2、单选题：
​Where is the electron transport chain found in plant cells?‏
选项：
A: Stroma of chloroplasts
B: Inner membrane of mitochondria
C: Thylakoid membranes of chloroplasts
D: Cytoplasm
答案: 【 Thylakoid membranes of chloroplasts】

3、单选题：
​Energy released by the electron transport chain is used to pump H+ ions into which location?‎
选项：
A: Mitochondrial matrix
B: Mitochondrial intermembrane space
C: Mitochondrial inner membrane
D: Cytosol
答案: 【 Mitochondrial intermembrane space】

4、单选题：
‌Inside an active mitochondrion, most electrons follow which pathway?‎
选项：
A: Glycolysis --> NADH --> oxidative phosphorylation --> ATP --> oxygen
B: Citric acid cycle --> FADH2 --> electron transport chain --> ATP
C: Pyruvate --> citric acid cycle --> ATP --> NADH --> oxygen
D: Citric acid cycle --> NADH --> electron transport chain --> oxygen
答案: 【 Citric acid cycle --> NADH --> electron transport chain --> oxygen】

5、单选题：
​Which do the catabolic products of fatty acid breakdown enter into the citric acid cycle?​
选项：
A: Pyruvate
B: Acetyl CoA
C: Succinyl CoA
D: Malate or fumarate
答案: 【 Acetyl CoA】

6、单选题：
‏Brown-fat mitochondria uncouple oxidative phosphorylation to produce__________‎
选项：
A: ADP
B: Fat
C: Heat
D: Oxygen
答案: 【 Heat】

7、判断题：
​During ATP synthesis, protons move “down” their electrochemical gradient through  the F0 complex of ATP synthase‌
选项：
A: 正确
B: 错误
答案: 【 正确】

8、判断题：
‌The outer mitochondrial membrane is derived from the bacterial plasma membrane​
选项：
A: 正确
B: 错误
答案: 【 错误】

9、填空题：
‎__________ is a lipid soluble molecule that acts to shuttle electrons within the mitochondrial inner membrane‎
答案: 【 CoQ】

10、填空题：
‍The energy released by the passage of electrons along the respiratory chain is stored as an___________ across the inner mitochondrial membrane.‌
答案: 【 proton motive force】

Culturingandvisualizingcells-test

1、单选题：
 The most direct source of monoclonal antibodies are ________ cells.‎‌‎
选项：
A: B lymphocytes
B: T lymphocytes
C: myeloma
D: Hybridoma
答案: 【 Hybridoma】

2、单选题：
The fluorescent properties of dyes such as FITC can provide information on the‎‎‎‌‎
选项：
A: location of specific proteins.
B: concentration of  ions in specific regions of the cell.
C: the amount of  DNA in a cell.
D: volume of a cell.
答案: 【 location of specific proteins.】

3、单选题：
What factors necessary for growth of animal cells in culture are provided by serum? ‌
选项：
A: amino acids
B: precursors of DNA synthesis
C: growth factors
D: vitamins
答案: 【 growth factors 】

4、单选题：
What is the advantage of using GFP-tag to visualize specific proteins, instead of staining cells with fluorescent dyes that bind to the target protein?‏‏‌‏
选项：
A: GFP fusions enable one to track changes in the location of the protein in living cells; staining usually requires fixed cells
B: GFP fusions enable higher resolution than staining with fluorescent probes.
C: GFP permits the position of the protein in the cell more precisely than fluorescent probes
D: GFP fusions are not subject to artifacts; fluorescent probes may introduce background artifacts.
答案: 【 GFP fusions enable one to track changes in the location of the protein in living cells; staining usually requires fixed cells】

5、单选题：
‎Which one cleaves pre-miRNA in the cytoplasm to produce miRNA?‎‎‎
选项：
A: Dicer
B: RISC
C: shRNA
D: siRNA
答案: 【 Dicer】

6、判断题：
A single monoclonal antibody can bind to several different sites on an antigen‏‏‏‍‏
选项：
A: 正确
B: 错误
答案: 【 错误】

7、判断题：
‎RNAi can be mediated just by introducing the already processed miRNA/siRNA into cells‎
选项：
A: 正确
B: 错误
答案: 【 正确】

8、填空题：
‌___________________  degrades mRNAs with sequences complementary to a bound siRNA‎
答案: 【 RISC】

Ch20Test-singleanswerchoice

1、单选题：
The functions of the extracellular matrix include‌‌a. supporting differentiation.‌b. inducing morphogenesis.‌c. binding growth hormones.‌d. all of the above‌‎‌
选项：
A: a
B: b
C: c
D: d
答案: 【 d】

2、单选题：
Desmosomes:​​a. associate