Regents Biology Carbohydrates. Regents Biology Carbohydrates Which foods contain carbohydrates?
Carbohydrates Good or Bad ??????? You get to answer this question at the end!
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Transcript of Carbohydrates Good or Bad ??????? You get to answer this question at the end!
Carbohydrates are organic compounds.We know them as
sugars and starches.
• Organic compounds have carbon in them.
• Carbohydrates are made of carbon, hydrogen, and oxygen usually in a 1:2:1 ratio.
• CHO
Benedict’s solution can be used to test for Monosaccharides (sugars) Blue for neg.Yellowish for positive.
The monomers of carbohydrates are monosaccharides.
3 examples of monosaccharides (also known as sugars).
– Glucose : in blood
– Galactose : from milk
– Fructose : from plants
The polymer of a carbohydrate is called aPolysaccharide.
Monosaccharide
Many monosaccharides make a polysaccharide.
CarbohydratePolysaccharides- 4 types1.Plant starch
– Stores energy for future use. Example: potatoes & carrots
2.Cellulose
Makes up cell walls in plants. Gives strength and rigidity as well as flexibility to plants.Celery is a good example of a vegetable with lots of cellulose.
Complex carbohydrates continued…
3. Glycogen – animal starch
– Stored in liver and muscles to provide energy and regulate blood sugar levels.
4. Chitin – exoskeletons of insects
Foods that have lots of carbohydrates fall into 2 categories
• Simple carbohydrates– Sugary foods – Highly processed grains –
white bread, white rice, & pasta
– Gives you that SUGAR RUSH
• Complex carbohydrates– Whole grain foods, fruits
and vegetables– These are broken down
slower in the body and are better for you
Carbohydrates give you energy!
• So choose heart healthy whole grain carbohydrates fruits and vegetables