Биология

 
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Upper epidermis of a deciduous leaf

Principle

The leaf of a deciduous plant consists of several layers. Cells containing chloroplasts are found in deeper layers. The externally exposed tissue layer protects the plant against evaporation losses, however, it must also be transparent to light needed for photosynthesis in the deeper ...

 
Детали

Продукт No: P1441801

Lower epidermis with guard cells

Benefits
  • Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
  • With student worksheet, appropriate for all class levels
  • With detailed instructor information, incl. sample microscopy image
  • Optimized for tight schedules, i.e. ...
 
Детали

Продукт No: P1441901

Cross-section of a deciduous leaf

Principle

The leaf of a deciduous plant consists of several layers. Cells with many chloroplasts are found in the deeper layers. The external tissue layer, the epidermis, protects the plant against moisture loss due to evaporation. It does not contain any chloroplasts and the cells appear ...

 
Детали

Продукт No: P1442001

Cross-section of a conifer (gymnosperm) leaf - adaption to arid conditions

Principle
Some trees do not possess large deciduous leaves, instead they have green needle-shaped (acicular) leaves. Due to the reduction of their surface, these leaves are well adjusted to arid conditions. In addition, they are mostly covered by a layer of wax (cuticula) and the stomatal ...

 
Детали

Продукт No: P1442101

The stem of a dicotyledonous plant - Identification of xylem and phloem tissue

Benefits
  • Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
  • With student worksheet, appropriate for all class levels
  • With detailed instructor information, incl. sample microscopy image
  • Optimized for tight schedules, i.e. ...
 
Детали

Продукт No: P1442201

The stem of a monocotyledonous plant

Principle

The stem of plants must accomplish various functions. It supports the leaves, the lateral branches, and the blossoms. The mechanical supportive tissue (collenchyma) is responsible for the necessary stability and elasticity. Did you ever come to think about how a 20m-tall tree is ...

 
Детали

Продукт No: P1442301

Root with root-hair cells

Benefits
  • Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
  • With student worksheet, appropriate for all class levels
  • With detailed instructor information, incl. sample microscopy image
  • Optimized for tight schedules, i.e. ...
 
Детали

Продукт No: P1442401

Cross-section of a plant ovary

Benefits
  • Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
  • With student worksheet, appropriate for all class levels
  • With detailed instructor information, incl. sample microscopy image
  • Optimized for tight schedules, i.e. ...
 
Детали

Продукт No: P1442501

Starch as a nutritional reserve substance in plants

Principle
The most significant process on earth takes place inside the chloroplasts of the cell, i.e. photosynthesis. Energy-rich glucose (dextrose) and oxygen are synthesized from the energy-poor substances carbon dioxide and water. The energy comes from the
sun. The plant converts glucose ...

 
Детали

Продукт No: P1442601

Wing feathers of birds

Principle

Feathers give the birds stability and enable flight. The stability, on the one hand, depends on the chemical structure. Feathers consist of the same resistant material as the scales of reptiles, which is β-keratin. On the other hand, the vane constitutes an almost impenetrable ...

 
Детали

Продукт No: P1442701

Comparison of raw milk and homogenised milk

Principle

Milk is an important basic food because it supplies the body with proteins for building up muscles, calcium for the stabilization of bones, and vitamins. Unprocessed fresh milk from the cow has a fat content ranging from 3.5 to 5 percent. The fat content of purchased milk is reported ...

 
Детали

Продукт No: P1442801

Fish scales in comparison

Benefits
  • Experiment is part of a complete solution set with a total of 50 experiments for all microscopy applications
  • With student worksheet, appropriate for all class levels
  • With detailed instructor information, incl. sample microscopy image
  • Optimized for tight schedules, i.e. ...
 
Детали

Продукт No: P1442901

Skeletal muscle

Principle

Your skeletal muscles make it possible that you can move, hold your body in an upright position when you are standing or sitting, or your face can smile. The muscles of all mammals possess a similar basic structure.

Benefits

  • Experiment is part of a complete solution set with ...
 
Детали

Продукт No: P1443001

Blood cells

Principle

Every human being possesses 5 to 7 liters of blood which constantly circulates in the body. When circulating, it transports nutrients and heat to wherever needed. The blood also has many other functions, for example, it is responsible for the closure of wounds and it is capable ...

 
Детали

Продукт No: P1443101

Kidney

Principle

Compared to the liver, the kidney is a rather small organ, however, it is the most significant excretion organ in humans apart from the skin and the lungs. Water and the substances dissolved in it are first transferred to the renal corpuscle (Malpighian
body). The liquid travels ...

 
Детали

Продукт No: P1443201

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