LEVEL 04 · LESSON 03

Vitamins and carbohydrates

See it

In-vitro cultures may receive vitamins and a carbohydrate source because their photosynthetic capacity and culture environment may not support fully autotrophic growth. Sucrose is commonly used in many protocols, but exact amounts are protocol-specific.

Understand it

Carbon source affects osmotic and metabolic conditions.
Vitamins and organic supplements vary among formulations.
Record both ingredient identity and concentration.
Important boundary

Do not generalize one carbohydrate concentration to every plant or stage.

Try it

Explain the concept in your own words, then identify what plant, explant, stage, units, source, or observation context would need to be preserved before applying it.

Lesson quiz

Apply it

Connect this lesson to an actual MyTCLab record: what fields would you need in order to know later exactly what happened and why?