Transcript Bonding is more than attraction

Chemistry of Cells
Carbohydrates
• What is it?
- They are organic compounds made of carbon,
hydrogen, and oxygen atoms in the proportion
of 1:2:1.
Why are carbohydrates important
to organisms?
• They are the key source of energy, and they
are found in most foods-especially fruits,
vegetables, and grains.
Monosaccharides
• What is it?
- Monosaccharides are single sugars.
• What does it help build?
- Monosaccharide help in building
blocks of carbohydrates.
Polysaccharides
• Polysaccharides are chains of three or more
monosaccharides.
• Starches are examples of polysaccharides.
Monosaccharides
• What is a disaccharide?
- They are double sugars formed when two
monosaccharides are joined.
• Sugar is an example of a disaccharide.
Lipids
• What is it?
• Lipids are nonpolar molecules that
are not soluble.
• Lipids do not dissolve in water.
Lipids
• Examples of lipids are:
fats, phospholipids, steroids, and
waxes.
Protein
• What is it?
- Protein is a molecule formed by linked smaller
molecules called amino acids.
• Amino acids are the building blocks of
proteins
Protein
• Examples of proteins are:
– Legumes, eggs, milk, fish, poultry
Nucleic Acids
• What is a nucleic acid?
- It is a long chain of smaller molecules called
nucleotides.
• What is a nucleotide?
- A nucleotide has three parts: a sugar, a base,
and a phosphate group, which contains
phosphorus and oxygen atoms.
Nucleic Acids
• What is DNA?
- Deoxyribonucleic acid, consists of two strands
of nucleotides tat spiral each other.
• What is RNA?
- Ribonucleic acid, may consist of a single strand
of nucleotides or of based-paired nucleotides.
ATP
• What is it?
- Adenosine triphosphate is a single nucleotide
with two extra energy-storing phosphate
groups.
• Why is it important to cells?
• ATP is the energy currency of the cell.
Agenda
• Create a graphic organizer for the following words:
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carbohydrate
monosaccharide
lipid
protein
amino acid
nucleic acid
nucleotide
– Hint: Use your text to help define the words.