Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
THE IMPORTANCE OF BEING THE RIGHT SIZE - ORGANISMS AND SIZE
Member rating: No Rating | Words: | Submitted: Thu Mar 17 2005
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
THE IMPORTANCE OF BEING THE RIGHT SIZE Different organisms are of different sizes. If I take an example of two organisms such as an amoeba, which is a single celled organism and an elephant, which is a multicellular organism I can see that they are obviously of different sizes. AMOEBA ELEPHANT Since an amoeba is small it has a large surface area compared to its volume. Since an elephant is large its surface area is small in comparison with its volume. As can be seen below if one increases the surface area of an object, the total volume increases but the surface area: volume ratio decreases. 3cm 2cm 1cm Total SA= 6 24 54 Total Vol= 1 8 27 SA:Vol= 6:1 3:1 2:1 An amoeba exchanges with the environment by occurring across the entire body surface through the cell membrane. An elephant exchanges with the environment by taking in oxygen into...
Get instant access
- Instant, unlimited access to our documents in full
- Swap your work for free access, or pay £4.99
- To see the full version of this document and 146,871 others
Receive email updates for this category
- Simply tell us your email address and receive a weekly Study Help Email for FREE
- Receive 3 FREE essay views with each email
- Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk
