Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

METABOLISM

No description
by

Mariana Perez

on 22 August 2017

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of METABOLISM

METABOLISM
Series of processes through which living beings transform energy through chemical reactions.
Catabolism
Anabolism
CONSTRUCTION!
-Growth of new cells.
-Tissue maintenance.

DESTRUCTION!!
-Energy production.
-Generation of body temperature.
-Degradation--> waste!
To break complex macromolecules into smaller components.
To form compounds and macromolecules (carb., prot., lip., nuc.acids) from molecules.
Exergonic Reactions
That release energy as a result of chemical processes
Endergonic Reactions
That require energy from the surroundings in order to be able to form compounds.
*energy in form of calories!!
REGULATION
1. Enzymes- they regulate the speed of the reactions. They attach to a specific substrate and form compounds, inhibiting other reactions as well.

2. Negative feedback: accumulation of a synthesized product that inhibits more enzyme work.

3. N.S., pancreas, pituitary & adrenal glands-->release hormones.
Macromolecules
- blocks of cell construction.
- made from individual units called monomeres, in order to build combined units, called polymeres.
PROTEINS

CARBOHIYDRATES

LIPIDS

NUCLEIC ACIDS

-during catabolism they are broken in 26 aminoacids.

-during anabolism they form hormones and enzymes.


Carbohydrates
-if they are not used immediately as energy, the glucose is converted into glucogen and stored in liver and muscle.

-when this reservoirs are saturated, glucose is turned into fat and stored in adipose tissue.
Lipids
-broken into fatty acids and glicerol (oversimplified).

-store energy, as structural components of cellular membranes and important signal molecules.

Proteins
Nucleic Acids

-DNA and RNA are made of nitrogen bases, such as purines and pyrimidines, sugars and hydrogen bonds.

-When broken, they also provide energy and are a source of nitrogen.
Full transcript