CN201681512U

CN201681512U - DNA model demonstration board

Info

Publication number: CN201681512U
Application number: CN2009202260008U
Authority: CN
Inventors: 李永刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-11
Filing date: 2009-09-11
Publication date: 2010-12-22
Anticipated expiration: 2019-09-11

Abstract

A DNA model demonstration board comprises a deoxyribose model (2), a cytosine model (3), a guanine model (4), a phosphate model (5), an adenine model (6), a thymidine model (7) and a demonstration board made of iron sheet, wherein the deoxyribose model (2), the cytosine model (3), the guanine model (4), the phosphate model (5), the adenine model (6) and the thymidine model (7) are made of layered magnetic materials. Without complicated interspersing structures, the DNA model demonstration board is brief and simple in structure and to the point, which facilitates teachers demonstrating DNA structures on a blackboard or a demonstration board conveniently and fast. Moreover, demonstration via changing the shape is convenient and has better demonstration effect.

Description

DNA model demonstration plate

Technical field

The present invention relates to the model that a kind of Biology Teaching is used, be specifically related to a kind of DNA model demonstration plate.

Background technology

The structure of DNA is a content very important in the Biology Teaching, and is a difficult point.Especially about the connection of the chemical bond between three ingredients of the duplex structure of DNA and deoxynucleotide, very abstract especially and indigestion, this makes the teacher need spend the more time when explanation.Though multimedia teaching can help the student to understand this piece knowledge intuitively, a lot of schools but can not use these teaching means due to limited conditions.

Notification number: CN2127798, the Chinese patent literature of the day for announcing: 1993.03.03 has been announced a kind of " dismantled and assembled DNA model ", be a kind of novel teaching mode, it is characterized in that being inserted in the hole of ball, pentagonal prism and four kinds of quadrangulars by thin cylindrical rod, thus common component model integral body.The student can understand the chemical composition and the space structure of dna molecular by starting this model of dismounting, and grasps the base complementrity pair principle, in imparting knowledge to students important use is arranged at big, biological lesson of middle school.But this dismantled and assembled DNA model is in the classroom instruction process of reality, and especially when using in the classroom instruction of newly giving lessons, the student operates comparatively loaded down with trivial details, complicated, and does not have good demonstration effect.

Summary of the invention

The purpose of this utility model is at existing DNA teaching mode complex structure, complex operation, is difficult to deficiencies such as demonstration, provides a kind of simple in structure, easy and simple to handle, the DNA model demonstration plate of convenient demonstration.

The purpose of this utility model realizes by following technological means: DNA model demonstration plate, comprise ribodesose model, cytimidine model, guanine model, phosphate radical model, disease model induced by adenine and thymine model, described DNA model demonstration plate also comprises the demonstration board that an iron sheet material is made, and described ribodesose model, cytimidine model, guanine model, phosphate radical model, disease model induced by adenine and thymine model are the magnetic material of sheet and make.

Described ribodesose model is set to pentagonal lamella; Described cytimidine model is set to the lamella that a side shape, a side have the arc evagination; Described guanine model is set to the lamella that a side shape, a side have the arc indent; Described phosphate radical model is set to circular lamella; Described disease model induced by adenine is set to the lamella that a side shape, a side have the dihedral evagination; Described thymine model is set to the lamella that a side shape, a side have the dihedral indent.

Described ribodesose model, cytimidine model, guanine model, phosphate radical model, disease model induced by adenine and thymine model are set to different colors respectively.

A side of projection also is provided with three hydrogen bonds on the described cytimidine model; A recessed side also is provided with three hydrogen bonds on the described guanine model; A side of projection also is provided with two each and every one hydrogen bonds on the described disease model induced by adenine; A recessed side also is provided with two each and every one hydrogen bonds on the described thymine model.

Described hydrogen bond is set to the flat strips shape, adopts magnetic material to make.

Described hydrogen bond is provided with separately.

Described demonstration board is set directly on the blackboard.

Compared with prior art the utlity model has following tangible advantage: 1, this DNA model demonstration plate has been avoided the interspersed structure of some complexity, and is brief and concise, simple in structure.2, the teacher can demonstrate on blackboard or demonstration board preferably, and this DNA model demonstration plate is easy and simple to handle, demonstration is quick, changes also easily demonstration of shape simultaneously, good demonstration effect.

Description of drawings

Fig. 1 is the structural representation of this DNA model demonstration plate;

Fig. 2 is the separated position figure of each several part among Fig. 1;

Among the figure, 1, demonstration board, 2, the ribodesose model, 3, the cytimidine model, 4, the guanine model, 5, the phosphate radical model, 6, disease model induced by adenine, 7, the thymine model, 8, hydrogen bond.

Embodiment

The present invention is described in further detail below in conjunction with description of drawings and embodiment:

DNA model demonstration plate as shown in Figure 1, comprise ribodesose model 2, cytimidine model 3, guanine model 4, phosphate radical model 5, disease model induced by adenine 6 and thymine model 7, described DNA model demonstration plate also comprises the demonstration board 1 that an iron sheet material is made, described demonstration board 1 also can be set directly on the blackboard that iron sheet makes, like this can economical with materials, can accelerate demonstration speed simultaneously.Described ribodesose model 2, cytimidine model 3, guanine model 4, phosphate radical model 5, disease model induced by adenine 6 and thymine model 7 are the magnetic material of sheet and make.Like this, these models can be demonstrated and take down on demonstration board 1 easily, have improved demonstration speed.Described ribodesose model 2, cytimidine model 3, guanine model 4, phosphate radical model 5, disease model induced by adenine 6 and thymine model 7 are set to different colors respectively.Can strengthen the demonstration effect like this, the student can be come into plain view, in time distinguish different bases and different chemical bonds.

Described ribodesose model 2 is set to pentagonal lamella, is generally regular pentagon, can connect on each angle a chemical bond model is set, and can guarantee can carry out assembly unit from different angles; Described cytimidine model 3 is set to the lamella that a side shape, a side have the arc evagination; Described guanine model 4 is set to the lamella that a side shape, a side have the arc indent; The setting of these two this correspondences of base is for the correct needs of demonstrating.Described phosphate radical model 5 is set to circular lamella, can two chemical bond models be set in the both sides of phosphate radical model 5 correspondence; Described disease model induced by adenine 6 is set to the lamella that a side shape, a side have the dihedral evagination; Described thymine model 7 is set to the lamella that a side shape, a side have the dihedral indent.The setting of these two this correspondences of base also is for the correct needs of demonstrating.

A side of projection also is provided with three hydrogen bonds 8 on the described cytimidine model 3; A recessed side also is provided with three hydrogen bonds 8 on the described guanine model 4; A side of projection also is provided with two each and every one hydrogen bonds 8 on the described disease model induced by adenine 6; A recessed side also is provided with two each and every one hydrogen bonds 8 on the described thymine model 7.Described hydrogen bond 8 is set to the flat strips shape, adopts magnetic material to make.Described hydrogen bond 8 also can be provided with separately.Though can increase the time of demonstration like this, can be more flexible, can allow the student more can understand the connection effect of hydrogen bond, thereby strengthen the demonstration effect.

Claims

1.DNA model demonstration plate, comprise ribodesose model (2), cytimidine model (3), guanine model (4), phosphate radical model (5), disease model induced by adenine (6) and thymine model (7), it is characterized in that: described DNA model demonstration plate also comprises the demonstration board (1) that an iron sheet material is made, and described ribodesose model (2), cytimidine model (3), guanine model (4), phosphate radical model (5), disease model induced by adenine (6) and thymine model (7) are the magnetic material of sheet and make.

2. DNA model demonstration plate according to claim 1 is characterized in that: described ribodesose model (2) is set to pentagonal lamella; Described cytimidine model (3) is set to the lamella that a side shape, a side have the arc evagination; Described guanine model (4) is set to the lamella that a side shape, a side have the arc indent; Described phosphate radical model (5) is set to circular lamella; Described disease model induced by adenine (6) is set to the lamella that a side shape, a side have the dihedral evagination; Described thymine model (7) is set to the lamella that a side shape, a side have the dihedral indent.

3. DNA model demonstration plate according to claim 1 and 2 is characterized in that: described ribodesose model (2), cytimidine model (3), guanine model (4), phosphate radical model (5), disease model induced by adenine (6) and thymine model (7) are set to different colors respectively.

4. DNA model demonstration plate according to claim 1 and 2 is characterized in that: the side that described cytimidine model (3) is gone up projection also is provided with three hydrogen bonds (8); Described guanine model (4) is gone up a recessed side and also is provided with three hydrogen bonds (8); The side that described disease model induced by adenine (6) is gone up projection also is provided with two each and every one hydrogen bonds (8); Described thymine model (7) is gone up a recessed side and also is provided with two each and every one hydrogen bonds (8).

5. DNA model demonstration plate according to claim 4 is characterized in that: described hydrogen bond (8) is set to the flat strips shape, adopts magnetic material to make.

6. DNA model demonstration plate according to claim 4 is characterized in that: described hydrogen bond (8) is provided with separately.