Biological Models

Explore the primary, secondary and tertiary structure of proteins with the captivating models and tools in this dynamic kit. This engaging, hands-on protein folding kit makes teaching protein structure basics easy. Students will fold a protein while exploring how the chemical properties of amino acids determine its final structure. Students can use the Amino Acid Starter Kit© to: •Learn that the 20 amino acids all share a common backbone but have different side chains, each with different chemical properties. •Identify the chemical properties of the side chains through a dual colouring scheme guided by the kit’s chemical properties circle, amino acid side chain list and coloured plastic clips. •Group the side chains into one of 5 categories: hydrophobic (nonpolar), hydrophilic (polar), negatively charged, positively charged, and cysteines, which sometimes form disulphide bonds. The coloured clip at the base of each side chain indicates chemical properties while embedded coloured balls in the amino acid side chain model show atomic structure. •Employ the kit’s protein-folding activities to first explore the primary and tertiary structure of proteins by constructing a generic 15-amino acid protein, then learn about the secondary structure of proteins by folding a toober model of the first of 3 zinc fingers of the Zif268 protein. Each 1-group set includes 1 chemical properties circle, 1 amino acid side chain chart, 22 amino acids, 1 mini toober, 22 coloured plastic clips and 6 hydrogen bond connectors.

These versatile modelling Toobers provide hands-on learning experiences in biology and chemistry. Students can model DNA or create protein structures and explore basic protein-folding principles. Toobers are flexible foam rods which have soft wire core that allows them to hold their shape well and they can be simply straightened out afterwards and re-used. Length: 120 cm long. Please note that theses are sold individually and the push pins are not included. See also 'Amino Acid Starter Kit' (MO110150). Also useful for teaching: • How hydrophilic/hydrophobic side-chains influence protein's structure • How structure is critical factor in many protein's function

This life size 2 part human brain is a median section model. The right hemisphere has the cerebellum and the stem with occipital lobe. On base. Numbered with English Key Card. Dimensions 190 x 150 x 150mm (D x W x H).

This 5-part classic brain model is an original anatomic cast of real human brain and comes divided along the midsagittal plane. The components of the brain's left half are: • Frontal and parietal lobe • Temporal and occipital lobe • Encephalic trunk • Cerebellum With integral magnets for easy viewing and hands on learning, the classic brain is great education tool for teaching and learning about the human nervous system and anatomy of the brain. The model comes complete with removable base for mounting and display purposes.

Students will immediately become engaged with this interactive foam model of double-stranded DNA and single-stranded RNA. The DNA Starter Kit© is schematic model that transforms from the familiar ladder shape to the double helix with twist. Students can explore the structure of colour-coded DNA bases showing purines and pyrimidines which connect to continuous sugar-phosphate backbone. Then they can delve into replication and transcription. Using individual nucleotide triphosphates, they can synthesize new strand of DNA one base at time showing the semi-conservative replication of DNA. Finally they can synthesize mRNA one base at time to show the process of transcription. Each kit includes: 51 bases (12 red adenine, 12 yellow thymine, 12 blue cytosine, 12 green guanine, 3 white uracil), 4 continuous grey backbones, 24 grey sugar-phosphates, 12 lavender sugar-phosphates and 48 orange phosphates.

The sky is the limit to what you can teach using these new large-scale, colour-coded foam nucleotides. Begin by teaching the complementary A-T and C-G base pairs and the antiparallel nature of double-stranded DNA. Move on to the flow of genetic information as you teach the basic processes of semiconservative DNA replication and mRNA transcription. You can then stretch students by introducing PCR (polymerase chain reaction) and the Sanger DNA sequencing method -- and much more. 80 Large-Scale Nucleotides: • 20 Red Adenosine • 20 Yellow Thymine • 20 Blue Cytosine • 20 Green Guanine 80 Adhesive-Backed Round Magnets

The model shows DNA and transcription of RNA. Height approx 500 mm. Complete with stand, instructions and model description.

Comprising abstract shaped colour coded parts to represent the nitrogenous bases, pentagonal sugar and pyramidal phosphate parts required to make the Double Helix model of DNA. The model can be displayed on its stand or untwisted into either flat or ladder form. The kits are designed so that only complimentary bases can be joined together. Scale 10 mm 2 Angstroms, 12 layer. The kit comes with stand and full instructions.

Comprising abstract shaped colour coded parts to represent the nitrogenous bases, pentagonal sugar and pyramidal phosphate parts required to make the Double Helix model of DNA. The model can be displayed on its stand or untwisted into either flat or ladder form. The kits are designed so that only complimentary bases can be joined together. Scale 10 mm 2 Angstroms, 22 layer. The kit comes with stand and full instructions.

Human ear, enlarged approx. 4 times and dissected into 5 parts, showing external, middle and internal portion. Ossicles and labyrinth can be taken out. Mounted on base, numbered and with Key Card. Dimensions 370 x 240 x 190mm (L x W x D).

Colourful representation of the outer, inner and middle ear including: removable eardrum with hammer and anvil, 2-part labyrinth with stirrup, cochlea and auditory/balance nerve. Comes with base and photocopiable key to parts in 4 languages.

Classic model of the human eye with highly accurate and detailed colourful components. Dissects into 6 parts: a two-part sclera with cornea and eye muscle attachments, both halves of the choroid with iris and retina, lens and vitreous humour. Comes with detachable base and photocopiable key to parts in 4 languages. Dimensions 205 x 130 x 150 mm.

This innovative functional eye model is an open design model, offering high visibility, which does not involve the injection of liquid*! It is composed of a flexible lens with an adjustable focal length, which constitutes the crystalline lens for comprehensive visualisation. The adjustment of the crystalline lens is made by mechanical stress on the flexible lens, which is similar to the action of the ciliary muscles. The screen represents the retina that can slide along the optical axis to simulate vision problems (myopia, hyperopia). The lens holder is placed in front of the eye to allow corrective lens to be put in place. The crystalline lens is equipped with an adjustable focal, without the need for further injection of liquid*, which enables the study of vision problems and their correction. Contents: eye model and kit of corrective lenses. *a one-time injection of liquid is required when setting up the apparatus for the first time only.

Clearly demonstrates how the heart pumps blood around the body. Comes with complete instructions. Assembly required. Size approximately 280 x 220 mm.

Highly detailed 2-part human heart model. The front heart wall is detachable to reveal the chambers and valves inside the human heart. The classic heart model just slightly smaller than life-size with exquisite anatomical detail throughout. Great model of the anatomy of the human heart. Stand included with this high quality heart.

Human heart 3 times life size. Model is cut by vertical line towards level of ventricular septum and separates into parts after the arch of aorta and superior venacava have been removed. Both atria and ventricles with bicuspid and tricuspid semilunar valves as well as sigmoid valves can be seen. Separates into 7 parts. On base. 23 structures are numbered with an English key card. Dimensions 280 x 230 x 330mm (L x W x H).

Natural size, front heart is removable to view the chambers. Mounted on base. Numbered with English Key Card. Dimensions 140 x 140 x 200mm (L x W x H).

This model shows the Kidney with an adrenal gland as well as renal and adrenal vessels and the upper portion of the ureter. removable front half of the kidney to show cortex medulla and vessels as well as renal pelvis. Mounted on base. Numbered with English Key Card. Dimensions 120 x 120 x 280mm (L x W x H).

Large, detailed model of flower, with the pistil and anthers shown in section to show the egg and pollen inside their cases. Dimensions: 220 x 330 mm.

Proteins become real in your students' hands with this as they fold Mini-Toober ß-Globin fragments and discover the primary, secondary and tertiary structure in this model. Maps guide your students in folding the Mini-Toobers into ß-Globin's 3-D shape. This Kit is the next step in helping your students understand proteins, after engaging in the Amino Acid Starter Kit© activities. The Mini-Toober ß-Globin Folding Kit© includes Mini-Toobers, folding map guides, amino acid side-chains, haeme group, iron atom, oxygen atoms, and an assortment of parts to mark and connect the fragments. The Folding Kit can be used successfully by to students working in teams. Available as kit for self-construction, or ready-made, pre-folded model.

Half scale model of the human skeleton. Produced in lightweight and durable synthetic material. All of the main joints move including the shoulder, elbow, wrist, hip, knee, jaw and ankle. Comes with metal stand and photocopiable key to parts in 4 languages. Size 850 mm.

Human Skeleton Model-Life size model of human skeleton with stand, made of plastic material, finished in natural colour with plastic cover. Mounted on base. Numbered with English Key Card. Dimensions (Height): 1.7 m.

Compact desktop model skeleton on a sturdy stand. Size 460 mm.

This high-quality robust skeleton stand can be used to hold almost any skeleton model, and allows it to be transported easily from room-to-room over variety of surfaces. The base is made from cast iron and is very heavy to prevent tipping. The six heavy-duty castors have brakes. A set screw holds the skeleton rod in place. The inner diameter is 12.5 mm. It measures 52 x 52 x 95 cm approx. with weight of 17.4 kg.

The hook accessory can be used to hang a life-sized skeleton using the base, SK180000. It is 117 cm long, 12.5 mm in diameter, with hook that is approx. 20 cm.

Half sized, 11 piece dissectable anatomical torso, consisting of realistically coloured and detailed body parts in the correct proportion and location. Comes complete with a photocopiable key to parts, ideal for pupils to learn about the major organs and the physical relationship between them.

This hand painted torso model consists of 13 parts. The following parts are removable: eye with optical nerve, half brain, lung (2 parts), heart (2 parts), liver, stomach, front portion of the kidney, half of the bladder, large and small intestines, with appendix flap opening. All parts are labelled and come with a key card. Dimensions 380 x 240 x 890mm (W x D x H).

Torso without Open Back 21 Parts. Life size showing the head with nasal and buccal cavity, half brain, eye with optic nerve. Removable 2-lung halves, heart in parts, liver with gall bladder, 2-part stomach, large and small intestines with appendix flap opening and cover, and half of Kidney. Male genital organs in 4-parts and female genital organs in 2-parts with embryo in the 3rd month of pregnancy. Mounted on a base. Numbered with English Key Card. Dimensions (W x Dx H): 380 x 240 x 890 mm.

Life size human torso model with open front and back sections. This life size 3D model of the human torso is ideal for studying the structure and fuctions of the organs. The model is extremely detailed and provides an excellent overview of the human torso. Contains the following parts: Head, Brain (4 parts), Eye, Torso, Lungs (2 parts), Heart (2 parts), Liver, Stomach (2 parts), Intestines (4 parts), Kidney, Artery and Vein, Male Genital Organ (4 Parts), Female Genital Organ (3 parts), Vertabra, 7th Vertabra. Some parts are removable and dissectable.. Dimensions 380 x 240 x 900mm (W x D x H).

This 12 part anatomically correct unisex human torso is hand-painted true to detail and made of high-quality plastic. Developed and modelled in Germany this is ideal for teaching and understanding human anatomy, offering hands-on experience. Supplied complete with Torso Guide. The following components of this unisex torso are removable: • 2-part head • 2-part heart • lungs • Stomach • Liver with gall bladder • 2-part intestinal tract • Front half of kidney

This classic 18-part unisex human torso model is hand-painted true to detail and made of high-quality plastic. Developed and modelled in Germany this is ideal for teaching and understanding human anatomy, offering hands-on experience. This human torso model has the unique feature of an open neck and back section going from the cerebellum to the coccyx. Vertebrae, intervertebral discs, spinal cord, spinal nerves, vertebral arteries, and many other features are represented in detail in this colourful replica of the human anatomy. Supplied complete with torso guide. 18-part unisex human torso model includes the following removable parts and organs: • 7th thoracic vertebra • 6-part head • lungs • 2-part heart • Stomach • Liver with gall bladder • 2-part intestinal tract • Front half of kidney • Front half of urinary bladder

This deluxe dual-sex, 28-part human torso from 3B offers everything you need for detailed demonstration in human anatomy. The model comes complete with removable male and female genital inserts, opened neck and back section to study vertebrae, intervertebral discs, spinal cord, spinal nerves, vertebral arteries etc., deluxe head with 4-part brain and much more. Ideal for advanced demonstrations in biology or medical settings and supplied complete with torso guide. The following parts of the 28-part deluxe human torso are removable: • 7th thoracic vertebra, female chest wall • 6-part head • Female breast covering • 2 lungs • 2-part heart • 2-part stomach • Liver with gall bladder • 4-part intestinal tract • Front half of kidney • 4-part male genital insert • 3-part female genital insert with foetus

Durable hinged model with realistic shapes and details of a full set of adult teeth. Size 100 x 90 x 70 mm.

Study the unique molecular structure of carbon nanotubes. Fullerene molecules are all visually interesting and can be well represented by molecular models. Their unique molecular structure results in numerous potential exciting applications in current day nanoscience which can engage pupils and help to create link between chemistry and the 'real world'. This 530 mm model uses atoms from the Minit system which can be arranged to show the chair, zigzag or chiral structures of the tube and the associated properties. Particular areas to study include: • The similarities in structure of carbon nanotubes and the layers in graphite. • How curvature is achieved in the molecular shape of the ends of nanotubes due to the difference in bonding angles. • Different symmetries of carbon rings in the carbon nanotube the chair, zigzag and chiral structures and how these differences affect properties such as strength and conductivity and hence potential applications. Kits contains 260 atoms. Please note this kit version requires assembly.

Robust models illustrating the process of meosis cell division. The chromosomes are painted to allow easy identification.

The kit contains the following: 12 base Pairs Includes 6 A-T and 6 G-C base pairs; 5' hydrogen and 3' oxygen parts; oxygen atoms to model RNA; removable carbons for uracil; ATP, TTP, GTP and CTP models; display stand; teacher resources and lessons.

Eight individual models illustrating the process of mitotic cell division for a general animal cell. Chromosomes and centromeres are brightly painted to easily identify and explain each step of cell division. Each model is approx. 100 x 150 mm.

This detailed 3D rendering of a dicot leaf section, which is greatly magnified, is ideal for studying the structure and function of a dicot leaf. Structures featured include: cuticle, upper epidermis, hypodermis (collenchyma), pallisade parenchyma, spongy parenchyma, air spaces, chloroplasts, bundle sheath, sclerenchyma, xylem, phloem, lower epidermis, guard cells, and stomata. These key features are colored and numbered for comparison with the key card that is included. This model provides a visually and kinesthetically effective method for studying the structure and function of the various structures of a dicot leaf.