2021知到答案 细胞生物学（2019秋冬） 智慧树网课章节测试答案

第二章 章节测试

1、选择题:Prokaryotic and eukaryotic cells are distinguished by the size and the types of internal structures, especially if there is nuclear envelope.
选项：
A:对
B:错
答案: 【对】
2、选择题:Plant cells have chloroplasts for photosynthesis whereas animal cells do not have. 
选项：
A:对
B:错
答案: 【对】
3、选择题:The mesosome is plasma membrane enfolding and involved in cell division and energy releasing reactions of eukaryotic cells. 
选项：
A:对
B:错
答案: 【错】
4、选择题:The DNA is the growing and developing basis of life.
选项：
A:对
B:错
答案: 【错】
5、选择题:All cells share similar structure, composition and metabolic features: Plasma membrane, DNA/RNA, and Ribosome.
选项：
A:对
B:错
答案: 【对】
6、选择题:Definition of  Nucleoid 
选项：
A:It is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.
B:It is the smallest and simplest self-replicating prokaryote.
C:It is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material.
D:Cells have a cell nucleus and other organelles enclosed within membranes.
E:It is folded invaginations in the plasma membrane of bacteria.
答案: 【It is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material.】
7、选择题:Definition of Mycoplasma
选项：
A:It is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.
B:It is the smallest and simplest self-replicating prokaryote.
C:It is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material.
D:Cells have a cell nucleus and other organelles enclosed within membranes.
E:It is folded invaginations in the plasma membrane of bacteria.
答案: 【It is the smallest and simplest self-replicating prokaryote.】
8、选择题:Definition of Prokaryotic cell
选项：
A:It is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.
B:It is the smallest and simplest self-replicating prokaryote.
C: It is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material.
D:Cells have a cell nucleus and other organelles enclosed within membranes.
E:It is folded invaginations in the plasma membrane of bacteria.
答案: 【It is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.】
9、选择题:Definiton of Mesosome
选项：
A:It is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.
B:It is the smallest and simplest self-replicating prokaryote.
C:It is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material.
D:Cells have a cell nucleus and other organelles enclosed within membranes.
E:It is folded invaginations in the plasma membrane of bacteria.
答案: 【It is folded invaginations in the plasma membrane of bacteria.】
10、选择题:Definition of Eukaryotic cell
选项：
A:It is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.
B:It is the smallest and simplest self-replicating prokaryote.
C:It is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material.
D:Cells have a cell nucleus and other organelles enclosed within membranes.
E: It is folded invaginations in the plasma membrane of bacteria.
答案: 【Cells have a cell nucleus and other organelles enclosed within membranes.】

第三章 章节测试

1、选择题:The light source in a fluorescent microscope produces a beam of fluorescence that travels through a filter, which blocks all wavelengths except that which is capable of exciting the fluorophore (荧光基团). 
选项：
A:对
B:错
答案: 【错】[$]
2、选择题:Transmission electron microscopes (TEMs) form images using electrons that are transmitted through an ultrathin specimen.
选项：
A:对
B:错
答案: 【对】
3、选择题:

Negative Staining is well suited for examining very small particulate materials, such as viruses, ribosomes and protein complexes.

选项：
A:对
B:错
答案: 【对】

4、选择题:The fluorescent proteins (FPs) can be used to study the spatial and temporal distribution of RNA in living cells. 
选项：
A:对
B:错
答案: 【错】
5、选择题:

The electron microscope can provide vastly greater resolution than the light microscope. 

选项：
A:对
B:错
答案: 【对】

6、选择题:Definition of Laser scanning confocal microscopy
选项：
A: It is based on the observation that two single-stranded nucleic acid molecules of complementary base sequence can form a double stranded hybrid. 
B:Technique whereby two different types of cells (from one organism or from different species) are joined to produce one cell with one, continuous plasma membrane.
C:The specimen is illuminated by a finely focused laser beam that rapidly scans across the specimen at a single depth, thus illuminating only a thin plane (or “optical section”) within the specimen.
D:The smallest distance between two points on a specimen that can still be distinguished as two separate entities. 
E:They are made by identical immune cells from a unique parent cell.
答案: 【The specimen is illuminated by a finely focused laser beam that rapidly scans across the specimen at a single depth, thus illuminating only a thin plane (or “optical section”) within the specimen.】
7、选择题:Definition of Resolution/Resolving Power
选项：
A:It is based on the observation that two single-stranded nucleic acid molecules of complementary base sequence can form a double stranded hybrid.
B:Technique whereby two different types of cells (from one organism or from different species) are joined to produce one cell with one, continuous plasma membrane.
C:The specimen is illuminated by a finely focused laser beam that rapidly scans across the specimen at a single depth, thus illuminating only a thin plane (or “optical section”) within the specimen.
D:The smallest distance between two points on a specimen that can still be distinguished as two separate entities. 
E:They are made by identical immune cells from a unique parent cell.
答案: 【The smallest distance between two points on a specimen that can still be distinguished as two separate entities. 】
8、选择题:Definition of Nucleic acid Hybridization
选项：
A:It is based on the observation that two single-stranded nucleic acid molecules of complementary base sequence can form a double stranded hybrid. 
B:Technique whereby two different types of cells (from one organism or from different species) are joined to produce one cell with one, continuous plasma membrane. 
C:The specimen is illuminated by a finely focused laser beam that rapidly scans across the specimen at a single depth, thus illuminating only a thin plane (or “optical section”) within the specimen. 
D:The smallest distance between two points on a specimen that can still be distinguished as two separate entities. 
E:They are made by identical immune cells from a unique parent cell.
答案: 【It is based on the observation that two single-stranded nucleic acid molecules of complementary base sequence can form a double stranded hybrid. 】
9、选择题:Definition of Monoclonal Antibodies
选项：
A:It is based on the observation that two single-stranded nucleic acid molecules of complementary base sequence can form a double stranded hybrid. 
B:Technique whereby two different types of cells (from one organism or from different species) are joined to produce one cell with one, continuous plasma membrane. 
C:The specimen is illuminated by a finely focused laser beam that rapidly scans across the specimen at a single depth, thus illuminating only a thin plane (or “optical section”) within the specimen.
D:The smallest distance between two points on a specimen that can still be distinguished as two separate entities.
E:They are made by identical immune cells from a unique parent cell. 
答案: 【The smallest distance between two points on a specimen that can still be distinguished as two separate entities.】
10、选择题:Definition of Cell Fusion/Cell Hybridization
选项：
A:It is based on the observation that two single-stranded nucleic acid molecules of complementary base sequence can form a double stranded hybrid. 
B:Technique whereby two different types of cells (from one organism or from different species) are joined to produce one cell with one, continuous plasma membrane.
C:The specimen is illuminated by a finely focused laser beam that rapidly scans across the specimen at a single depth, thus illuminating only a thin plane (or “optical section”) within the specimen. 
D:The smallest distance between two points on a specimen that can still be distinguished as two separate entities.
E:They are made by identical immune cells from a unique parent cell.
答案: 【Technique whereby two different types of cells (from one organism or from different species) are joined to produce one cell with one, continuous plasma membrane.】

第四章 章节测试

1、选择题:

In general, the glycosyls (糖基) of glycoproteins and glycolipids in the plasma membrane: （        ）

选项：
A:Are on the outer leaflet of the plasma membrane, facing the environment of a cell.
B:Are on the inner leaflet of the plasma membrane, facing the cytosol.
C:Are equally distributed on the inner and outer surface of the plasma membrane.
D: Occur only in internal membranes.
答案: 【Are on the outer leaflet of the plasma membrane, facing the environment of a cell.】

2、选择题:

 You stain membrane proteins with a fluorescent-labeled antibody and notice the membrane is evenly stained. After a few hours, all of the fluorescence is at one end of a cell. You can conclude that (      ).

选项：
A: Lipids flip-flop in the membrane  
B:Proteins move laterally in the membrane
C:The fluorescent dye was bleached   
D:Proteins act as transporters
答案: 【Proteins move laterally in the membrane】

3、选择题:Maintenance of the lipid bilayer in the plasma membrane requires special enzymes and the hydrolysis of ATP. 
选项：
A:对
B:错
答案: 【错】
4、选择题:

Membrane proteins are the functional units of cell membrane. 

选项：
A:对
B:错
答案: 【对】

5、选择题:

The biomembrane is asymmetric, but the distribution of cholesterols in the lipid bilayer is generally uniform. 

选项：
A:对
B:错
答案: 【错】

第六章 章节测试

1、选择题: Proteins destined to chloroplast are transported by the way of  (     )
选项：
A:Vesicular transport
B:Transmembrance transport
C:Gated transport
D:Remain
 
答案: 【Transmembrance transport】
2、选择题:

The observation that isolated F1 particles have ATPase activity suggests that (       )
选项：
A:Electron transport requires energy derived from ATP hydrolysis.
B:The normal enzymatic activity of the particle is reversible.
C:These particles have been irreversibly inactivated.
D:Electron transport is still functioning. 
答案: 【The normal enzymatic activity of the particle is reversible.】

3、选择题:

Which of the following proteins would not be found in Mitochondria? (       ) 
选项：
A:Adenylate kinase
B:Cytochrome P450
C:Malate dehydrogenase 
D:ATP synthase
答案: 【Cytochrome P450】

4、选择题:

Which cell type is likely to have Chloroplasts ? (       ) 
选项：
A:Adipose cells
B:Red blood cell
C:Liver cells 
D:Plant cells
答案: 【Plant cells】

5、选择题:

Which of the following about Chloroplasts and Mitochondria is NOT true? (      )
选项：
A:Both mitochondria and chloroplasts have Semi-independence.
B:The function of the chloroplasts is photosynthetic phosphorylation, while the function of the Mitochondrial is oxidative phosphorylation.
C:The proliferation of mitochondria and chloroplast can be by split.
D:Both mitochondria and chloroplasts have CF₀F₁ ATP synthetase. 
答案: 【Both mitochondria and chloroplasts have CF₀F₁ ATP synthetase. 】

第九章 章节测试

1、选择题: The second messenger that activates PDK is? (      )
选项：
A:PIP₂ 
B:Raft
C:PDK
D:PKA
答案: 【PKA】
2、选择题:A SNARE is（        ）
选项：
A:Any soluble protein present within vesicles.
B:An integral protein that selects specific cargo proteins.
C:An integral protein in the nuclear membrane.
D:An integral protein that functions to help vesicles dock to target membranes.
答案: 【An integral protein that functions to help vesicles dock to target membranes.】
3、选择题:Which of the following components is NOT required for NO signal pathway？ (   )
选项：
A: Ion channel linked receptor 
B:Nitric oxide synthase
C:Protein kinase G（PKG）
D:Guanylyl cyclase（GC）
答案: 【 Ion channel linked receptor 】
4、选择题:

Ca²⁺  is crucial for the regulation of protein activity and function. Which of the following structures is Not the place for Ca²⁺ storage？(     )
选项：
A:ER
B:Nuclear pore complex (NPC)
C: The extracellular space   
D:Mitochondrion
答案: 【Nuclear pore complex (NPC)】

5、选择题:The structure recognized by SH2 domain is catalyzed by (   )
选项：
A: PKA
B:PTK
C:PKC 
D:PKB
答案: 【PTK】
6、选择题:G protein-linked receptors are dimerized after recepting ligands and start next signaling pathway.(    )
选项：
A:对
B:错
答案: 【错】
7、选择题:

Protein kinase A itself is different in different cell types, which explains why the effects of cyclic AMP vary depending on the target cell. (   )

选项：
A:对
B:错
答案: 【对】

8、选择题:

Signal molecule binds GPCR (G protein-coupled receptor) and causes conformational changes of the GPCR, which activates heterotrimeric G protein to further affect intracellular signaling proteins or target functional proteins. (   )

选项：
A:对
B:错
答案: 【对】[/$]