Unit 10 - Biological Molecules and Metabolic Pathways
All documents for this subject (75)
Seller
Follow
hajrahali1
Reviews received
Content preview
UNIT 10:
BIOLOGICAL MOLECULES AND
BIOCHEMICAL PROCESSES
HAJRAH ALI [LEAH CARSON-UNIT 2]
, A.P1
EXPLAIN THE STRUCTURE OF BIOLOGICAL MOLECULES IN LIVING
ORGANISMS.
,WATER
, WATER
STRUCTURE/BONDING OF WATER:
Water is a biological molecule made from 2 hydrogen atoms bonded with an oxygen atom. Oxygen atom carry a partial negative charge and
atoms carry a partial positive charge, so attracted to each other molecules. In water the oxygen molecules are attracted to a hydrogen of an
known as hydrogen/intermolecular bonds. A hydrogen bond is an “intermolecular” force between the molecules. Covalent bond is an “intram
force of attraction which brings hydrogen and oxygen bonds together it is not a hydrogen bond. The electrons in the covalent bonds are shar
because oxygen is more electronegative than hydrogen, which creates an uneven distribution of electrons and therefore uneven distribution
within the molecules, this is indicated with a delta symbol on drawn diagrams to show. The oxygen molecules pull negatively charged electro
itself and away from the hydrogen. Water is known as a dipolar molecule as it has regions of different charges such as negative charge near
and positive towards the hydrogen.
PROPERTIES:
1. It is a metabolite in a hydrolysis, photosynthesis and condensation reaction. With the help of water, it can break the polysaccharide to sp
their original monomers, such digestion of carbohydrates or glycogen.
2. An Important solvent in reactions to dissolve substances
3. Has a high specific heat capacity Water has a very high specific heat capacity, more energy is required/ taken out to change the tempera
water, when water is heated the heat energy goes towards weakening or breaking the hydrogen bonds rather than increasing the kinetic
water molecules so that molecules of water change their state to gas. So, the water acts as a buffer against the rapid temperature chang
change rapidly).
4. Has a strong cohesion between water molecules by the hydrogen bonds; this supports water columns as it is easier to draw up a column
each molecule individually and provides surface tension which allows habitats such as invertebrates to sit on top away from predators.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller hajrahali1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $22.89. You're not tied to anything after your purchase.
