1 / 6

The Molecules of Cells

The Molecules of Cells. Section 2.3. Macromolecules. Carbohydrates Proteins Lipids Nucleic Acids All organic (contain carbon). Only produced in living things. Carbohydrates. Contain C, H, O atoms. Monosaccharides Immediate energy source

lester
Download Presentation

The Molecules of Cells

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Molecules of Cells Section 2.3

  2. Macromolecules • Carbohydrates • Proteins • Lipids • Nucleic Acids • All organic (contain carbon). • Only produced in living things.

  3. Carbohydrates • Contain C, H, O atoms. • Monosaccharides • Immediate energy source • Simple sugars, ex. Glucose used to build polymers • Disaccharides • Used by plants to store or transport glucose. • Sucrose, maltose, lactose • Polysaccharides • Long polymers made of glucose monomers • Ex. Amylose, cellulose (plant starches), glycogen (animal starch)

  4. Lipids • Store energy • 3 Groups • Triglycerides • Animal fats, plant oils • Phospholipids • Compose cell’s membranes. • Steroids • Act as hormones (estrogen, testosterone, venom, cholesterol.

  5. Proteins • Amino acids are the monomers of proteins. • More than 75% of the dry mass of a cell is protein. • Cells produce more than 2,000 proteins • 9 Categories, p. 53 • Structural, enzyme, transport, contractile, hormone, antibody, pigment, recognition, toxins

  6. Nucleic Acids • Composed of nucleotides • Nitrogen base, 5-carbon sugar, phosphate group • DNA: deoxyribonucleic acid • Double-stranded • Found in nucleus of eukaryotes, and cytoplasm of prokaryotes • Contains our genetic code • RNA: ribonucleic acid • Single-stranded • Found in cytoplasm of cells • Used to make proteins

More Related