2020 20春-细胞生物学-苏媛媛-1(苏州大学) 最新满分章节测试答案
- Introduction of Molecular cell biology Cell theory-test
- Culturing and visualizing cells Culturing and visualizing cells-test
- Transmembrane transport of Ions and small molecules
- Biomembrane Structure Biomembrane Structure-test
- Cellular Energetics
- Vesicular traffic,secretion and endocytosis Vesicular traffic,secretion and endocytosis
- Moving Proteins into Membranes and Organelles
- Signal transduction and G protein-coupled receptors Signal transduction
- Signaling pathways that control gene activity Signaling pathways that control gene activity
- Cell organization and movement I： Microfilaments Cell organization and movement I： Microfilament
- Cell organization and movement II： Microtubules and intermediate filament Cell organization and move
- The Eukaryotic Cell Cycle The Eukaryotic Cell Cycle单元测验
- Nucleus, chromatin and chromosomes Nucleus, chromatin and chromosomes 单元测验
- Cell senescence and death
- Integrating cells into tissues Ch20 Test -single answer choice
- Stem cells, cell asymmetry Ch21 Test- single answer Choice
本答案对应课程为:点我自动跳转查看
本课程起止时间为:2020-02-23到2020-07-03
本篇答案更新状态:已完结
Introduction of Molecular cell biology Cell theory-test
1、 问题:What did Leeuwenhoek do?
选项：
A: Looked at cork
B:Stated that plants are made of cells
C: Stated that animals are made of cells
D:Used simple light microscope and saw microorganisms
答案: 【Used simple light microscope and saw microorganisms】
2、 问题:He discovered that all animals were made of cells, which contributed to the development of the cell theory:
选项：
A:A.van Leeuwenhoek
B: Robert Hooke
C: Zacharias Jansse
D:Theodor Schwann
答案: 【Theodor Schwann】
3、 问题:Who was the first person to see cells under the microscope and give them a name?
选项：
A:A.van Leeuwenhoek
B:Robert Hooke
C:Theodor Schwann
D:Zacharias Jansse
答案: 【Robert Hooke】
4、 问题:Which of the following is NOT one of the main components of the cell theory?
选项：
A:cells must contain DNA
B: all living things are made of cells
C:cells can only come from other cells
D:cells are the basic unit of life
答案: 【cells must contain DNA】
Culturing and visualizing cells Culturing and visualizing cells-test
1、 问题: 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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题: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、 问题:_______ degrades mRNAs with sequences complementary to a bound siRNA
答案: 【RISC】
Transmembrane transport of Ions and small molecules
1、 问题:Classes of membrane transport proteins include all of the following except
选项：
A:ATP-powered pumps.
B:ion channels.
C:protein translocons.
D:transporters.
答案: 【protein translocons.】
2、 问题:The glucose uniporter GLUT1 has a Km of 1.5 mM for D-glucose and 30 mM for D-galactose. At a concentration of 5 mM for each, what is the rate of glucose transport relative to galactose transport? The Vmax may be assumed to be the same for both.
选项：
A:3.7-fold slower
B:equal
C:5.5-fold faster
D:20-fold faster
答案: 【5.5-fold faster】
3、 问题:How does uniport transport compare to simple diffusion?
选项：
A:Similar to simple diffusion, uniport transport is nonspecific
B:Uniport transport is slower but more specific than simple diffusion
C:Uniport transport is much faster and more specific than simple diffusion.
D:Simple diffusion is reversible but uniport transport is not.
答案: 【Uniport transport is much faster and more specific than simple diffusion.】
4、 问题:Which of the four classes of ATP-powered pumps share overall similarity: several subunits, the same general organization, and a similar function in being H+ transporters?
选项：
A:ABC superfamily and P-class pumps
B: ABC superfamily and P-class pump
C: F-class pumps and P-class pumps
D:F-class pumps and V-class pumps
答案: 【F-class pumps and V-class pumps】
5、 问题:How does inhibition of the Na+/K+ ATPase increase the force of heart muscle contraction?
选项：
A:It increases cytosolic Na+ and therefore decreases Ca2+ export
B:It increases cytosolic K+ and therefore decreases Ca2+ export.
C:It decreases cytosolic Na+ and therefore decreases Ca2+ export
D: It decreases cytosolic K+ and therefore decreases Ca2+ export.
答案: 【It increases cytosolic Na+ and therefore decreases Ca2+ export】
6、 问题:Channel proteins (such as the voltage-gated Na channel) transport ions much faster than carrier proteins (such as the Na-K pump), but they cannot be coupled to an energy source; therefore, transport mediated by channels is always passive.
选项：
A:正确
B:错误
答案: 【正确】
7、 问题:The resting membrane potential of a typical animal cell arises predominantly through the action of the Na-K pump, which in each cycle transfers 3 Na ions out of the cell and 2 K into the cell, leaving an excess of negative charges inside the cell.
选项：
A:正确
B:错误
答案: 【错误】
8、 问题: The concentration gradient for a charged solute and the membrane potential constitute the _______ gradient for that solute.
答案: 【electrochemical】
9、 问题:Over expression of the ____ in human cancer cells can make these cells simultaneously resistant to a variety of chemically unrelated cytotoxic drugs that we widely used in cancer chemotherapy.
答案: 【Multidrug-resistance transport protein】
10、 问题:In the epithelial cells of the gut Na+-linked symporters in the apical (absorptive) domain of the plasma membrane and Na+-independent transport proteins in the basolateral domain bring about the _______ of absorbed solutes.
答案: 【Transcellular transport】
Biomembrane Structure Biomembrane Structure-test
1、 问题: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、 问题: 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、 问题: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、 问题: The _ are transmembrane proteins.
选项：
A:lipid-anchored membrane proteins
B:integral membrane proteins
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