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  • Rauga šūnu elpošanas intensitātes maiņa atkarībā no dažādiem ogļhidrātiem

     

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ID number:898927
 
Evaluation:
Published: 05.05.2023.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Time period viewed: 2021 - 2025 years
Extract

Pētījuma plānošana
• Lielumi/pazīmes

Atkarīgais lielums: Putu stabiņu augstums.

Neatkarīgais lielums: Ogļhidrāti (saharoze, fruktoze, glikoze).

Fiksētie lielumi: Rauga suspensija(5ml), laiks(15min).

• Darba piederumi un vielas
Svari, 3 mērcilindri(100ml), vārglāze (250ml), 3 stikla nūjiņas, piesta, pipete, 2 karotītes, lineāls(15cm), raugs (14g), ūdens (50ml), glicerīns(5g), cukurs (5g), fruktoze (5g).

• Darba gaita
1. Nosver un sagatavo piestā 5g saharozes, 5g glicerīnu un 5g fruktozes;
2. Mērcilindrā sajauc rauga suspensiju ( 14g rauga uz 50ml remdena ūdens);
3. Visos trīs mērcilindros ar pipeti pievieno 5ml rauga suspensiju;
4. Pirmajā mērcilindrā pievieno rauga suspensijai klāt 5g cukuru un ar stikla nūjiņu apmaisa;…

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