CN103456205A

CN103456205A - Teaching demonstration model for bacteriophage invading bacteria

Info

Publication number: CN103456205A
Application number: CN2012101829821A
Authority: CN
Inventors: 刘慧芳; 潘一; 杨双春; 王健; 王战勇; 苏婷婷
Original assignee: Liaoning Shihua University
Current assignee: Liaoning Shihua University
Priority date: 2012-06-04
Filing date: 2012-06-04
Publication date: 2013-12-18

Abstract

The invention relates to an emulational teaching model for demonstrating how a bacteriophage invades bacteria, in particular to a teaching demonstration model for a bacteriophage invading bacteria. The teaching demonstration model comprises a T4 bacteriophage model and an escherichia coli thallus model. The T4 bacteriophage model is composed of a protein head module and a hollow protein tail module, and a bacteriophage DNA molecule module is included in the protein head module. The escherichia coli thallus model is composed of simulative flagellums, a capsule, a cell wall module, a cell membrane module, an escherichia coli DNA molecule module, a ribosome module and a cytoplasm module, small holes are formed in the capsule, the cell membrane and the cell wall of the model, and therefore the NDA molecule module of the bacteriophage model can move into the escherichia coli thallus model conveniently. Multiple rails facilitating the moving of all the modules and a baffle hiding the protein shell of the model are arranged on the base plate of the whole model and the cytoplasm module.

Description

The demonstration model for teaching of bacteriophage invasion bacterium

Technical field

The present invention relates to a kind of teaching demonstration apparatus, especially relate to a kind of simulation teaching device of how to invade bacterium for demonstrating bacteriophage.

Background technology

At present, invade the data of bacterium for the bacteriophage of teaching demonstration, it is all character narrate, or simple schematic diagram, make the object of giving lessons beyond one's depth, even may not memory and profound or understood also, and the teacher also need be by facilities such as computer, projector in the process of demonstration, once these facilities go wrong, just can not demonstrate.

Summary of the invention

The present invention be take material object as model, in the process of giving lessons, teacher can with student's interaction, break away from stiff character narrate.The student can do it yourself to operate whole process, both can produce dense learning interest, can deepen visual impression again, makes it thorough to knowledge understanding, memory and profound.

For the quality of instruction that improves the teacher and student's classroom efficiency, the invention provides the demonstrating model of a kind of bacteriophage invasion bacterium of emulation, this model is cheap, by manual operation, easy to use.

The present invention is achieved through the following technical solutions: the DNA molecular module that the bacteriophage head module comprises can be separated along the track on floor by the tail module of hollow from the protein coat model of simulation, e. coli dna divides submodule can split into several sections and phage DNA to divide submodule module fragment of a size, bacteriophage model and phage DNA divide submodule, e. coli dna divide submodule all can be manually along the orbital motion on the tenuigenin module, it is by blocking with the identical paper slip of tenuigenin module color that the bacteriophage model is assembled needed protein coat model in the coli somatic model.

The present invention is simple in structure, and material easily obtains, and makes simple, manually easy to use; Can make the student to content stay deeply, vividly, impression intuitively, improve the efficiency of giving lessons.

The accompanying drawing explanation

Below in conjunction with accompanying drawing, the invention will be further described, and Fig. 1 is structural representation of the present invention.

In figure, 1-bacteriophage model, 2-coli somatic model, 3-bacteriophage head module, the 4-phage DNA divides submodule, 5-bacteriophage tail module, and the 6-e. coli dna divides submodule, 7-ribosomes module, 8-cell membrane module, 9-cell membrane module, 10-module flagellum, the 11-aperture, 12-blocks paper slip, and 13,14,15,16-track, the 17-base plate, 18-pod membrane, 19-tenuigenin module.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.

As shown in the figure, on rectangular device base plate, bacteriophage model (1) and coli somatic model (2) are installed successively, when starting to demonstrate bacteriophage model (1) invasion coli somatic model (2), can manually by bacteriophage model (1), along track (13), be adsorbed onto on the pod membrane model (8) of Escherichia coli model; Phage DNA divides submodule (4) just to enter in coli somatic model (2) through aperture (11) along track (13) by the protein tail module (5) of hollow; The phage DNA entered in coli somatic model (2) divides submodule (4) just to start to utilize e. coli dna to divide submodule (6) to be copied, manually e. coli dna is divided submodule (6) to be divided into several sections and divide with phage DNA the module fragment that submodule (4) size is identical, respectively along track (14,15,16) move to phage DNA divide submodule (4) around, become a plurality of phage DNAs that copy formation and divide submodule; A plurality of phage DNAs that copy formation divide submodule to pass through the protein coat that the interior ribosomes module (7) of coli somatic model has formed oneself, manually by track (14,15,16) scraps of paper that block on side are taken away, thereby make the model protein shell expose; Finally, the phage DNA module manually analoging reproduction formed enters into protein coat model head along track (13,14,15,16) by the model protein shell hollow afterbody just formed, and is assembled into complete bacteriophage.

Claims

1. the demonstration model for teaching of bacteriophage invasion bacterium comprises T4 bacteriophage model and coli somatic model, the two is embedded on base plate jointly, wherein, the bacteriophage model is coated by the protein coat model, specifically by protein head module and protein hollow tail module, formed, described protein head is the hexahedron of hollow, and the phage DNA that inside comprises the double helix shape divides submodule; The coli somatic model is comprised of flagellum, pod membrane, cell membrane, cell membrane, e. coli dna molecule, ribosomes, the tenuigenin module of simulation, and e. coli dna divides submodule to be comprised of the module fragment of a plurality of double helix shapes; Have on base plate and tenuigenin module and can meet the track that bacteriophage model and phage DNA divide submodule, e. coli dna molecular model to move, and the baffle plate of hiding model protein shell is arranged.

2. according to the demonstration model for teaching of claim 1 bacteriophage invasion bacterium, it is characterized in that pod membrane, cell membrane and the cell membrane module of described coli somatic model has one to allow phage DNA to divide submodule to enter the aperture of coli somatic module.

3. according to the demonstration model for teaching of claim 1 bacteriophage invasion bacterium, it is characterized in that described phage DNA divides submodule, can separate along the track on base plate by the protein tail module of hollow.

4. invade the demonstration model for teaching of bacterium according to claim 1 bacteriophage, it is characterized in that described composition e. coli dna divides the module fragment of the double helix shape of submodule, with phage DNA, divide submodule the same size, and can be along the rail moving on the tenuigenin module.