Nucleus and chromosomes

Продукт No: P1441401

Principle

The nucleus is recognizable under the light microscope as a circular object. It can be seen even without previous staining. The nucleus is the control center of many cellular processes and harbors the hereditary information. The nucleus contains filamentous structures (chromatin) which after staining appear as a homogenous mass. Cell division always commences with a division of the nucleus (mitosis). In preparation to this division, the filaments retract and become shorter and thicker. Staining now makes distinctive objects visible, i.e. the chromosomes. The genetic information they contain has already undergone reduplication. The membrane that envelopes the nucleus dissolves, the chromosomes gather in the center of the cell. Attached to the spindle apparatus they migrate to the poles of the cell, where they form two new nuclei. Only then does the body of the cell divide and thus two daughter cells are created.

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. minimum preparation time required
  • Microscopy solution set specifically designed to include all required accessories
  • Content available with matching multimedia files

Tasks

Study plant cells undergoing mitosis under the microscope!

What you can learn about

  • Nucleus
  • Chromosomes
  • Cell division
  • Chromatin



Перечень материалов (вы́писка) Продукт Количество
Euromex BioBlue Monocular microscope BB.4250 EUR-BB-4250 1
Bunsen burner,natural gas, DIN 46917-05 1
Carmine acetic acid sol. 250 ml 31469-25 1
Safety gas tubing, DVGW, sold by metre 39281-10 1
Dropping pipette with bulb, 10pcs 47131-01 1
Scissors,straight,pointed,l 110mm 64623-00 1
Scalpel holder 64615-00 1
Scalpel blades,rounded tip,10 off 64615-02 1
Tweezers,straight,pointed,120mm 64607-00 1
Erlenmeyer wide neck, 250 ml 46152-00 1
Microscopic slides, 50 pcs 64691-00 1
Cover glasses 18x18 mm, 50 pcs. 64685-00 1
Hose clip, diam. 8-16 mm, 1 pc. 40996-02 2
Test tube holder, up to d 22mm 38823-00 1

Литература по данной статье

Название Продукт Язык
Handbuch Schüler- und Demonstrationsversuche Mikroskopie, Sekundarstufe I und II, inkl. CD-ROM, 13290-01 DEU
TESS advanced Biology manual Microscopy incl. CD-ROM 13290-02
Schülerversuche Mikroskopie, Gerätesatz TESS advanced Biologie MIC 15290-88

Назад к перечню

Продукт No: P1441401

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