The scale of things

  • Thread starter WarrickF
  • Start date
45
0
Hi All,

I was wondering if someone could help me with a basic understanding of the scale of things in our body.

I love this little animation that Brian Greene has out there
http://www.pbs.org/wgbh/nova/elegant/scale.html

I know very little about biology, so you’ll need to humor me if these are stupid questions.

1. What is a DNA chain made up of? A series of double Helix’s?
2. Are these double Helixes then simply made up of carbon atoms?
3. What is a cell then made of?

Thanks
Warrick
 

Ouabache

Science Advisor
Homework Helper
1,338
7
Hmmmm.. I always wondered what was in an apple at resolution of [tex]10^{-35}[/tex] m :rolleyes:

A DNA chain is made up of sugars (deoxyribose), nucleobases
(purines & pyrimidines) and http://www.biology.lsu.edu/introbio/Link2/phosphate.gif [Broken], bound together in a double helical arrangement.
Not a series of double helices but one continuous double helix.

As you will see from the links, the double helix is not made simply of carbon atoms. Though by chemistry short-hand, when you see a ring shaped molucule such as deoxyribose or adenine, the vertices of the ring that are not labelled, are implied to have a carbon atom at those points. Here is a clearer diagram to what I am referring.

A cell is quite complex, it has macroscopic structure. Underlying that, is its chemical composition and interaction.
The chemistry of a cell is part of a unique discipline, biochemistry.
 
Last edited by a moderator:

Related Threads for: The scale of things

Replies
7
Views
2K
  • Posted
Replies
5
Views
2K
Replies
4
Views
12K
Replies
3
Views
8K
Replies
5
Views
2K
Replies
10
Views
2K
Replies
44
Views
16K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving

Hot Threads

Top