Vitamins and Nucleotides
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What are vitamins?
Any of a group of organic compounds which are essential for normal growth and nutrition and are required in small quantities in the diet because they cannot be synthesized by the body.
____ manufacture vitamins. _____ take in vitamins.
Plants Mammals
Why are vitamins important?
Needed for normal metabolism, growth, and development
What does Vitamin A deficiency cause?
Poor vision and night blindness
What is Vitamin A needed for? (2)
-Good eyesight -Healthy skin
What foods have Vitamin A? (3)
-Liver -Milk -Yellow and Green vegetables (broccoli and carrots)
What does Vitamin D defiency cause?
-Rickets -Also get osteomalacia
What is Vitamin D needed for?
-promotes absorption of calcium and phosphorus from the intestine -promotes strong bones and teeth
What foods contain Vitamin D? (4)
-Milk -Butter -Egg yolk -Fish oil
Where is Vitamin D made?
Made by the skin in sunshine.
What does Vitamin deficiency cause? (3)
-Scurvy -Weak capillary vessels, poor growth -Healing of wounds slow
What is Vitamin C needed for? (3)
-Synthesis of collagen -Maintains healthy blood vessels -Plays a role in the absorption of iron
What foods have Vitamin C? (5)
-Orange -Lemons -Grape fruit -Green vegetables -Potatoes
What group do DNA and RNA belong to?
Complex group called nucleic acids
What are nucleic acids?
A complex organic substance present in living cells, whose molecules consist of many nucleotides linked in a long chain.
What are nucleotides?
A nucleotide is an organic molecule that is the building block of DNA and RNA. A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base.
Draw a nucleotide.
