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All eukaryotic cells, animal and plant cells have nucleus.
发布时间:
2024-06-24 10:48:57
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相关试题
1.
Which of the following statements about the distribution and number of mitochondria is inaccurate? A: It is common in the cytoplasm of eukaryotic and prokaryotic cells. B: Animal cells have more mitochondria than green plant cells. C: Mitochondria are abundant in cells that are active in growth and metabolism. D: Mitochondria are more concentrated in the parts of cells where energy is needed.
2.
请翻译此段:All eukaryotic cells have a cytoskeleton,which is a convoluted latticework of filaments and tubules that appears to fill all availablespace in the cell and provides support for various other organelles.Alarge portion of the cytoskeleton consists of threadlike microfilament composed mainly of the contractile protein actin.They are involved in many types of intracellular movements in plant and animal cells.Asecond protein,myosin,is involve in the contraction of muscle cells
3.
Unlike animal cells, plant cells have which of these?选项: A:Flagella; B:A nucleus; C:Mitochondria; D:A cell wall
4.
The important difference between animal cell culture and plant tissue culture is that ( ). 选项:animal cell culture and plant tissue culture use different mediumanimal cell culture does not need sterile conditionsanimal cells can be subcultured, while plant cells cannot be subculturedanimal cells proliferation can generate large number of cells, while plant cells can only be cultivated into plants
5.
____、____the study of plant and animal cells.
6.
Plant cells have ___ and ___, which are not present in animal cells.选项: A:mitochondria, chloroplasts ; B:cell membranes, cell walls; C:chloroplasts, nucleus; D:chloroplasts, cell wall
7.
Which is wrong about cell differentiation? 选项: A、Highly differentiated plant cells still have totipotency. B、Somatic differentiation is caused by the loss of genetic material. C、Highly differentiated animal nuclei still have totipotency. D、Cell fusion technology can be used to test whether genes that are not expressed in parental cells are still active in the fused cells.
8.
Which is wrong about cell differentiation?选项: A:Highly differentiated plant cells still have totipotency.; B:Somatic differentiation is caused by the loss of genetic material.; C:Highly differentiated animal nuclei still have totipotency.; D:Cell fusion technology can be used to test whether genes that are not expressed in parental cells are still active in the fused cells.
9.
A major difference between prokaryotic and eukaryotic cells is ( ). 选项: A:Prokaryotic cells use RNA as their genetic material, while eukaryotic cells use DNA. ; B:Eukaryotic cells respond to external stimuli, while prokaryotic cells do not.; C:Nucleic acid replication in prokaryotes proceeds via a very different process than nucleic acid replication in eukaryotes.; D:Prokaryotic cells lack a cell nucleus or any other membrane-bound organelles.; E:Eukaryotes have more complex DNA than prokaryotes.
10.
2. All of the following are basic properties of cells except( ) 选项: A、 Cells have the same genetic system:DNA, RNA & ribosome. B、 Cells are capable of producing more of themselves. C、 All cells have biological membrane which constructed by lipid-protein system. D、 All cells have membrane bounded organelles. E、 All cells are basically the same in chemical composition.
11.
In contrast(对比, 对照)to eukaryotic cells, prokaryotic cells:A、lack a nuclear envelope.(膜)B、lack genetic materialC、have mitochondria(线粒体)D、have chloroplastsE、have complex chromosomes(染色体)
12.
The earliest materials used to observe and discover cells were (). 选项: A、Animal tissue B、Plant leaves C、Cork D、Cloth
13.
Which of the following statements about stem cells is wrong ()选项: A:It refers to the cells that have unlimited or long-term self-renewal ability and can produce at least one highly differentiated progeny cell; B: It exists in tissues and organs at all stages of human or animal ontogeny. It is the initial source of various differentiated cells or specialized cells; C:Stem cells have the potential to differentiate into more than one specific functional cell; D: In the process of embryonic development, it has the ability of division and proliferation, but it can not differentiate into specialized cells; E:The differentiation of stem cells has certain plasticity
14.
Which of the following statements is inaccurate 选项: A:In the local helix of RNA, the direction between the two strands is also antiparallel.; B:In double-stranded DNA, the purine base content is always equal to the pyrimidine base content.; C:DNA in eukaryotic cells only exists in the nucleus; D:D .The DNA of prokaryotic cells is circular, and the DNA in eukaryotic cells is all linear.
15.
Which cells below possess unlimited proliferation potential, have the capacity to produce more of themselves and can give rise to all of the cells of the tissue? 选项: A、differentiated end products of a tissue B、progenitor cells C、stem cells D、anatomical cells
16.
Bacteria and viruses can be used to study genes and inheritance, even though they are structurally and metabolically different from animal and plant cells.选项: A:正确; B:错误
17.
Bacteria and viruses can be used to study genes and inheritance, even though they are structurally and metabolically different from animal and plant cells. 选项: A、正确 B、错误
18.
Which of the following statements is CORRECT?选项: A:Plant cells typically have a positive water potential.; B:Diffusion is most effective over long distances.; C:A plant wilts when the turgor pressure inside the cells of such tissues falls toward zero.; D:None.
19.
Which of the following is NOT commonly used by animal viruses to enter host cells?选项: A: capsid remains outside the cell, as the nucleic acid is injected through the plasma membrane; B: fusion of envelope with plasma membrane; C: endocytosis; D: All of the above are ways that animal viruses enter host cells.
20.
The following description of stem cells is wrong ( ) 选项: A:Stem cells can maintain a constant number of themselves; B:Each cell from fertilized egg to 8-cell embryo has totipotency and is a totipotent stem cell; C:It exists in tissues and organs at all stages of human or animal ontogeny. It is the initial source of various differentiated cells or specialized cells; D:iPS technology can induce adult cells to dedifferentiate into pluripotent stem cells; E:In the process of embryonic development, it has the ability of division and proliferation, but it can not differentiate into specialized cells
21.
What type of cells of the heart have secretory abilities 选项: A: Pacemaker cells; B:Ventricle muscle cells; C:Atrial muscle cells; D:Bundle cells
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