science

• Proteins


  A macronutrient that's essential for building muscle mass
• Monomers of proteins


  Amino acids
• Elements in protein molecules

  • Carbon
  • Hydrogen
  • Oxygen
  • Nitrogen
  • Sulfur
• Where protein is commonly found

  Animal products
• Classifications of proteins


  • Fibrous proteins
  • Globular proteins
• Fibrous proteins


  • Insoluble in water, provide support/strength
• Globular proteins


  • Soluble in water, actively involved in a cell's metabolism
• Fibrous proteins


  • Collagen: tissue strengthening
  • Elastin: skin
  • Actin: muscle contractility
  • Keratin: hair/nails
• Globular proteins


  • Amylase: digestion of starch
  • Insulin: blood sugar regulation
  • Hemoglobin: carries oxygen
  • Immunoglobin: antibodies
• Roles of proteins


  • Structural: provides strength and shape in the structures of organisms. Example: collagen & keratin
  • Storage: serve as sources of nitrogen for developing embryos. Example: ovalbumin
  • Defensive: protect the body from diseases
  • Transport: involved in transporting substances like hemoglobin
  • Hormonal: helps coordinate activities in the body. Example: insulin, responsible for blood regulation
  • Receptor: enable the body cells to respond to chemical stimuli
  • Catalytic (enzymes): the most specialized proteins, its structure is crucial for its effectiveness as a catalyst