OSHA considers methylene chloride to be a potential occupational carcinogen. Short-term exposures to high concentrations may cause mental confusion, lightheadedness, nausea, vomiting, and headache. Continued exposure may also cause eye and respiratory tract irritation. Exposure to methylene chloride may make symptoms of angina more severe. Skin exposure to liquid methylene chloride may cause irritation or chemical burns. Allegra-D 24 Hour 180 mg / 240 mg (Sanofi-Aventis)
2 3 5 Distinguish Between Active And Passive Transport And R. Movement of materials into and out of cells takes place either passively or actively. Passive movement includes diffusion and osmosis, passive movement requires no energy input from the cell â since the molecules follow a concentration gradient. Active transport requires energy as the molecules are forced against the concentration gradient.
Active transport: passage. -both carrier molecules and an expenditure of energy are required to transport substances against their concentration gradient. Active transport: 'pumps'. -Are proteins involved in active transport because they use energy to move a substance against its concentration gradient. Active transport: Sodium potassium pump. -Moves three sodium ions (Na+) to the outside of the cell and two potassium ions (K+) to the inside of the cell.