MELVIN CALVIN (1911- 97)

1958 – USA

‘The cycle of chemical reactions by which plants turn carbon dioxide and water into sugar during photosynthesis’

In the Calvin cycle, which takes place in most plants, the initial product of the dark reactions (in which carbon is converted to sugar) is a compound with three carbon atoms per molecule. These are known as 3C plants.

A small group of plants – including maize, sorghum and sugar cane – are formed by a different cycle, known as the Hatch and Slack pathway. In this cycle the initial product of the dark reactions is a compound with four carbon atoms per molecule. These are 4C plants and can assimilate carbon dioxide at about twice or more the rate of 3C plants, and hence grow faster.
Calvin used radioactive 14C to study the photosynthesis cycle.

picture of the Nobel medal - link to nobelprize.org

Link to WIKIPEDIA

NEXT buttonTIMELINE

Advertisements

3 thoughts on “MELVIN CALVIN (1911- 97)

  1. Pingback: FRED HOYLE (1915-2001) | A History of Science

Leave a comment - especially if you find factual or grammatical errors

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s