lipids
Download
Skip this Video
Download Presentation
Lipids

Loading in 2 Seconds...

play fullscreen
1 / 33

Lipids - PowerPoint PPT Presentation


  • 126 Views
  • Uploaded on

Lipids. They do not mix with water. Examples: fats and steroids. LIPIDS ARE NEXT. WHAT DO THEY DO?. They are a great source of STORED ENERGY so we have it in the future. They INSULATE the body to maintain normal body temperature and they CUSHION the internal organs for protection.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Lipids' - jalene


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
lipids

Lipids

They do not mix with water.

Examples: fats and steroids

lipids are next
LIPIDS ARE NEXT

WHAT DO THEY DO?

  • They are a great source of STORED ENERGY so we have it in the future.
  • They INSULATE the body to maintain normal body temperature and they CUSHION the internal organs for protection.
  • They produce hormones for the body called STERIODS
  • They waterproof surfaces of animals,plants, and fruits- these are waxes!

THINK: Waterproof, insulate, steriods, energy, cushion… “WISE C”

slide3
Fats
  • Dietary fat consists largely of the molecule triglyceride.
    • Triglyceride is a combination of glycerol and three fatty acids.
lipids some interesting info
LIPIDS…Some interesting info

Waterproofing...

  • Fruits produce a waxy coating to keep from drying out.
  • The cells in a tulip make a wax which helps coat the leaves.
  • Ear wax traps dust, sand, and other foreign particles from going deeper into the ear and causing damage.
  • Beeswax- a structural material to hold honey in the hive
slide5
Unsaturated fatty acids
    • Have less than the maximum number of hydrogens bonded to the carbons.
  • Saturated fatty acids
    • Have the maximum number of hydrogens bonded to the carbons.
slide7
Most animal fats have a high proportion of saturated fatty acids, which can be unhealthy.
    • Example: butter
  • Most plant oils tend to be low in saturated fatty acids.
    • Example: corn oil
slide8
Not all fats are unhealthy.
    • Some fats perform important functions in the body and are essential to a healthy diet.
steroids
Steroids
  • Steroids are very different from fats in structure and function.
    • The carbon skeleton is bent to form four fused rings.
  • Cholesterol is the “base steroid” from which your body produces other steroids.
    • Example: sex hormones
lipips some interesting info
LIPIPS…Some interesting info

Steriods...

There are many different types of steroids. They are all lipids. Their functions vary. Some common steroids are:

SEX STEROIDS ANABOLIC STERIODS

CHOLESTEROL

They increase muscle

Like testosterone and estrogen

lipips some interesting info1
LIPIPS…Some interesting info

NATURAL STERIODS IN OUR BODY INCREASE MUSCLE GROWTH AND BONE DEVELOPMENT AND ARE GOOD. THE ILLEGAL ONES THAT ARE SYNTHETIC ARE BAD.

Some anabolic steroids are illegal

Steriods...

And can be dangerous and

very unhealthy

slide12
Synthetic anabolic steroids are controversial.
    • They are variants of testosterone.
  • Some athletes use anabolic steroids to build up their muscles quickly.
    • However, these substances can pose serious health risks.
lipids1
LIPIDS

WHERE ARE THEY FOUND?

  • In plants- in the seeds
  • ---------------------------------------------------
  • In animals- in adipose tissue, connective tissue, in animals
  • ---------------------------------------------------
  • Lipids make up the cell membrane of all cells.
proteins
Proteins
  • A protein is a polymer constructed from amino acid monomers.
  • Proteins perform most of the tasks the body needs to function.
more on proteins
MORE ON PROTEINS…

The following slides give you a little more in depth info on things that are made of proteins…

muscles ligaments tendons and bones
Muscles, ligaments, tendons, and bones

Without these particular structural proteins, we would look more like this….

microscope view of skin and nails
Microscope View ofSkin and Nails

This is skin

This is a nail

cell membrane
Cell Membrane

The cell membrane surrounds everything in a cell so it doesn’t

leak out. It is kind of like the balloon in a water balloon.

The cell membrane is made mostly of protein AND lipids.

slide21

Enzymes

Enzymes are proteins that speed up chemical reactions. If you didn’t have enzymes in your stomach to speed up digestion, the food would rot in your stomach because it would take so long!

slide22

HORMONES

Hormones are chemicals made in glands that are in one place in the body and then put into the blood to be used in another.

These are where the

hormone producing

glands are located

in your body.

slide23
The thyroid is found in the middle of your neck, by your voice box. Here is a picture of those cells secreting the thyroid hormone.

(The yellow stuff is

thyroid hormone)

Thyroid hormone regulates how fast your body uses energy.

If you have an over active thyroid, you use energy quickly and tend to be very thin and have a hard time putting on weight.

If you have an under active thyroid gland, you use energy very slowly and tend to carry more body fat and have a difficult time losing it.

Don’t be quick to think you have a thyroid problem if you are overweight, chances are it’s actually your eating and exercise habits!

slide24

Antibodies are part of the immune system. When something enters the body that isn’t supposed to be there, like certain bacteria, antibodies find the invader and stick themselves onto it. When a white blood cell finds the invader covered with antibodies, it knows it doesn’t belong there and kills it.

Antibodies

proteins1
PROTEINS

MADE UP OF...

Proteins are made of long chains (polymers) made of monomers. All proteins are made of the monomer…

AMINO ACID

the monomers amino acids
The Monomers: Amino Acids
  • All proteins are constructed from a common set of 20 kinds of amino acids.
  • Each amino acid consists of a central carbon atom bonded to four covalent partners.
    • A side group that is variable among all 20.
proteins as polymers
Proteins as Polymers
  • Cells link amino acids together by dehydration reactions.
    • The resulting bond between them is called a peptide bond.
proteins2
PROTEINS

WHERE ARE THEY FOUND?

  • In plant foods- in the cell membranes
  • In animal products- in the cell membranes- in the muscles or living things- cows, chicken, fish…
slide30
A slight change in the primary structure of a protein affects its ability to function.
    • The substitution of one amino acid for another in hemoglobin causes sickle-cell disease.
what determines protein structure
What Determines Protein Structure?
  • A protein’s shape is sensitive to the surrounding environment.
    • Unfavorable temperature and pH changes can cause a protein to unravel and lose its shape.
    • This is called denaturation.
proteins4
Proteins

Aside from the protein found in animal sources…protein can also be found in fruits, vegetables, grains, and nuts. (it just does not have as many amino acids)

ad