DNA molecular double-helix structure model teaching aid

Abstract

The utility model discloses a DNA molecule double helix structure model teaching aid, which belongs to the technical field of DNA models, and comprises a base plate, a stand column and two rubber tubes which are reversely, parallelly and spirally extended upwards and are used for simulating two chains of DNA molecules. Light bars are installed in the rubber pipes, the two rubber pipes extend spirally to form a virtual cylinder, the vertical column is sleeved with the virtual cylinder, the side portion of the vertical column is fixedly connected with a plurality of connecting columns along the spiral path of the rubber pipes, the tail ends of the connecting columns are fixedly connected with the rubber pipes, and the connecting columns are arranged at intervals. A regular pentagon is fixedly connected to the connecting position of the rubber tube and the connecting column and is used for simulating deoxyribose molecules; wherein a support of a V-shaped structure is connected between every two adjacent regular pentagons on the same rubber tube, and a round ball is fixedly connected to the position of a V-shaped inflection point of each support and used for simulating a phosphate group and a diester bond; the side part of the connecting column is fixedly connected with a patch for simulating a hydrogen bond, and two ends of the patch are connected with the regular pentagon; wherein the regular pentagon, the ball and the patch are fixedly connected with lamp beads capable of flickering.

Description

Technical Field

[0001] The utility model relates to the technical field of DNA models, in particular to a teaching aid for a DNA molecular double helix structure model. Background Art

[0002] The main characteristics of the DNA double helix structure: 1) The DNA molecule is composed of two single strands of deoxynucleotides, and the two strands are spirally wound into a double helix structure in an antiparallel manner; 2) The deoxyribose and phosphate in DNA are alternately connected and arranged on the outside to form the basic backbone, and the bases are arranged on the inside; 3) The bases on the two strands are connected into base pairs through hydrogen bonds, and the base pairing has certain rules;

[0003] The structure of DNA is a compulsory course in high school, and in teaching, it is necessary to pay attention to cultivating the core qualities of students' "scientific thinking" and "scientific inquiry". In traditional teaching, the DNA structure basically uses pictures and simple static models as teaching aids, which makes it difficult for students to intuitively understand, and the learning is also boring, dull and uninteresting. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the defects existing in the prior art, and provide a teaching aid for a DNA molecular double helix structure model that can highly restore the DNA molecular structure in a double helix space, assist students to intuitively understand the DNA molecular structure, deepen memory, and is conducive to stimulating students' learning interest.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The teaching aid for a DNA molecular double helix structure model disclosed by the utility model includes:

[0007] A chassis; a column fixedly connected to the upper part of the chassis, and

[0008] Two rubber tubes spirally extending upward in an antiparallel manner, used to simulate the two strands of the DNA molecule. A light strip is installed in the rubber tube, and after the two rubber tubes are spirally extended, a virtual cylinder is formed. The virtual cylinder is sleeved outside the column. A plurality of connecting columns are fixedly connected to the side of the column along the spiral path of the rubber tube. The end of the connecting column is fixedly connected to the rubber tube, and the connecting columns are arranged at intervals;

[0009] A regular pentagon is fixedly connected to the connection position of the rubber tube and the connecting column, used to simulate the deoxyribose molecule;

[0010] Wherein, a V-shaped structure bracket is connected between two adjacent regular pentagons on the same rubber tube. A spherical ball is fixedly connected to the V-shaped inflection point position of the bracket, used to simulate the phosphate group and the diester bond;

[0011] A patch is fixedly connected to the side of the connecting column for simulating a hydrogen bond, and both ends of the patch are connected to the regular pentagon.

[0012] Among them, light beads capable of flashing are fixedly connected to the regular pentagon, the spherical ball, and the patch.

[0013] Furthermore, the chassis is a disc, and a walking wheel is fixedly connected to the lower part of the chassis. The walking wheel includes a driving wheel and a driven wheel, and the driving wheel is connected to a reduction motor.

[0014] Furthermore, an eight-channel wireless receiving controller and a storage battery are fixedly connected to the upper part of the chassis.

[0015] The storage battery is used to supply electrical energy to the eight-channel wireless receiving controller and the reduction motor.

[0016] The eight-channel wireless receiving controller is circuit-connected to the light strip and the light beads.

[0017] Furthermore, the spherical ball is a hollow sphere made of a transparent material, and the light bead is installed inside the spherical ball.

[0018] Furthermore, the rubber tube is a rubber tube made of a transparent material, and the light strip is installed inside the rubber tube.

[0019] Furthermore, the light bead is a light bead capable of flashing in color.

[0020] Furthermore, a top plate is fixedly connected to the top of the upright column for pasting a sign.

[0021] In the above technical solution, the beneficial effects of the DNA molecular double helix structure model teaching aid provided by the present utility model are as follows:

[0022] The DNA molecular double helix structure model teaching aid builds a model in a three-dimensional space through the chassis, the upright column fixedly connected to the upper part of the chassis, and two rubber tubes arranged in a reverse parallel and spirally extending upward outside the upright column. A regular pentagon for simulating a deoxyribose molecule is fixedly connected to the side of the rubber tube, and a patch for simulating a hydrogen bond is fixedly connected between the two rubber tubes through a connecting column. Adjacent two regular pentagons are fixedly connected with spherical balls for simulating phosphate groups through brackets, thereby realizing a highly restored DNA molecular structure in a three-dimensional space, with strong intuitiveness, deep memory of students, stimulating students' learning interest, enabling students to actively participate in activities of using hands and brains, deepening the understanding of biological concepts, enhancing the ability to apply knowledge, and cultivating innovative spirit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of a DNA molecular double helix structure model teaching aid disclosed by the present utility model.

[0025] Explanation of the reference numerals in the drawings:

[0026] 1, chassis; 2, column; 3, rubber tube; 4, connecting column; 5, regular pentagon; 6, bracket; 7, spherical ball; 8, patch; 9, caster; 10, eight-way wireless receiving controller; 11, storage battery; 12, top plate. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail with reference to the accompanying drawings.

[0028] See Figure 1 as shown in

[0029] The DNA molecular double helix structure model teaching aid of the utility model includes: chassis 1, column 2, rubber tube 3, connecting column 4, regular pentagon 5, bracket 6, spherical ball 7, patch 8;

[0030] The upper part of the chassis 1 is fixedly connected with the column 2;

[0031] Two rubber tubes 3 extend spirally upward in parallel in opposite directions, used to simulate the two strands of DNA molecules. A light strip is installed inside the rubber tubes 3, and after the two rubber tubes 3 extend spirally, a virtual cylinder is formed. The virtual cylinder is sleeved outside the column 2. A plurality of connecting columns 4 are fixedly connected to the side of the column 2 along the spiral path of the rubber tube 3. The end of the connecting column 4 is fixedly connected to the rubber tube 3, and the connecting columns 4 are arranged at intervals;

[0032] The regular pentagon 5 is fixedly connected to the connection position of the rubber tube 3 and the connecting column 4, used to simulate deoxyribose molecules. A V-shaped bracket 6 is connected between two adjacent regular pentagons 5 on the same rubber tube 3. A spherical ball 7 is fixedly connected to the V-shaped inflection point position of the bracket 6, used to simulate phosphate groups and diester bonds;

[0033] A patch 8 is fixedly connected to the side of the connecting column 4, used to simulate hydrogen bonds. Both ends of the patch 8 are connected to the regular pentagon 5;

[0034] Among them, light beads capable of flashing are fixedly connected to the regular pentagon 5, the spherical ball 7, and the patch 8. The flashing of the lights represents different positions of the DNA molecular double helix structure model. Among them, light beads are fixedly connected to both sides of the patch 8 for simulating base pairs (A-T, G-T). When in use, the flashing of the light beads on the patch 8 can accurately display the positions of the base pairs.

[0035] This teaching aid of the DNA molecular double helix structure model highly restores the DNA molecular structure in three-dimensional space, has strong intuitiveness, leaves a deep memory for students, stimulates students' learning interest, enables students to actively participate in activities involving hands and brains, deepens the understanding of biological concepts, improves the ability to apply knowledge, and cultivates the spirit of innovation.

[0036] Preferably, the chassis 1 is a disc, and a traveling wheel 9 is fixedly connected to the lower part of the chassis 1. The traveling wheel 9 includes a driving wheel and two universal driven wheels. A reduction motor is also fixedly connected to the lower part of the chassis 1, and the driving wheel is connected to the power output shaft of the reduction motor.

[0037] Preferably, an eight-way wireless receiving controller 10 and a storage battery 11 are fixedly connected to the upper part of the chassis 1. Electric energy is provided for the eight-way wireless receiving controller 10 and the reduction motor through the storage battery 11.

[0038] Among them, the eight-way wireless receiving controller 10 is a commonly used multi-functional eight-way remote control switch in the prior art. The eight-way wireless receiving controller 10 is circuit-connected to the light strip and the light beads. The eight-way wireless receiving controller 10 is also equipped with a wireless remote controller (not shown). The light strip, the light beads, and the reduction motor are remotely controlled to start through wireless communication between the remote controller and the eight-way wireless receiving controller 10, and the light beads on the light strip on the rubber tube 3, the regular pentagon 5, the spherical ball 7, and the patch 8 are respectively turned on or off.

[0039] Preferably, the spherical ball 7 is a hollow sphere made of a transparent material, and a light bead is installed inside the spherical ball 7. The rubber tube 3 is a rubber tube made of a transparent material, and a light strip is installed inside the rubber tube 3.

[0040] Preferably, the light beads are light beads capable of flashing in colors, which are more eye-catching visually.

[0041] Preferably, a top plate 12 is fixedly connected to the top of the column 2, and a signboard is pasted through the top plate 12, which is convenient for marking the name of this teaching aid or other information.

[0042] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A DNA molecule double helix structure model teaching aid, characterized in that: include: A chassis (1); a column (2) fixedly connected to the upper part of the chassis (1); and Two rubber tubes (3) extending upward in a reverse parallel spiral are used to simulate two chains of a DNA molecule. A light bar is installed in the rubber tube (3). The two rubber tubes (3) are spirally extended to form a virtual cylinder. The virtual cylinder is sleeved outside the column (2). The side of the column (2) is fixedly connected with a plurality of connecting columns (4) along the spiral path of the rubber tube (3). The ends of the connecting columns (4) are fixedly connected to the rubber tube (3), and the connecting columns (4) are arranged at intervals. A regular pentagon (5) is fixedly connected to the connection position between the rubber tube (3) and the connection column (4) to simulate a deoxyribose molecule; Wherein, a V-shaped support (6) is connected between two adjacent regular pentagons (5) on the same rubber tube (3), and a sphere (7) is fixedly connected to the V-shaped inflection point of the support (6) for simulating a phosphate group and a dilipid bond; The side of the connecting column (4) is fixedly connected with a patch (8) for simulating hydrogen bonds, and both ends of the patch (8) are connected to the regular pentagon (5); Wherein, the regular pentagon (5), the sphere (7) and the patch (8) are all fixedly connected with flashing lamp beads.

2. The DNA molecule double helix structure model teaching aid according to claim 1, characterized in that ； The chassis (1) is a circular disc, and a running wheel (9) is fixedly connected to the lower part of the chassis (1). The running wheel (9) comprises a power wheel and a driven wheel, and the power wheel is connected to a reduction motor.

3. The DNA molecule double helix structure model teaching aid according to claim 2, characterized in that ； An eight-channel wireless receiving controller (10) and a storage battery (11) are fixedly connected to the upper part of the chassis (1); The storage battery (11) is used to provide electric energy for the eight-way wireless receiving controller (10) and the reduction motor; The eight-way wireless receiving controller (10) is connected to the light bar and the light bead circuit.

4. The DNA molecule double helix structure model teaching aid according to claim 1, characterized in that: The sphere (7) is a hollow sphere made of a transparent material, and the lamp bead is installed inside the sphere (7).

5. The DNA molecule double helix structure model teaching aid according to claim 1, characterized in that: The rubber tube (3) is a rubber tube made of a transparent material, and the light bar is installed in the rubber tube (3).

6. The DNA molecule double helix structure model teaching aid according to claim 1, characterized in that ； The lamp beads are lamp beads that can flash in colors.

7. The DNA molecule double helix structure model teaching aid according to claim 1, characterized in that ； The top end of the upright post (2) is fixedly connected with a top plate (12) for pasting a sign.

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