cell cell biochem 🕯️

• homogenous liquid are attached in all directions by surrounding molecules so they move freely in all direction while surface molecules are attracted more towards the center of the liquid making the surface molecules more compact

  surface tension
• Whenever a semi-permeable membrane separates two solutions of unequal concentrations, the fluid tends to flow from the side of low osmotic pressure to that of higher osmotic pressure until an osmotic equilibrium is established

  osmosis
• interpenetration of molecules between two substances occurs whenever the solute distributes itself uniformly into the solvent. Small molecules and ions move faster than macromolecules.

  diffusion
• When a semi-permeable membrane allows the passage of the crystalloids but not the colloids,

  dialysis
• General Properties of Water 1. Chemically pure water is colorless, odorless and tasteless. 2. Has a higher boiling point and osmotic pressure. 3. High specific heat. 4. High latent heat of vaporization. 5. High surface tension. 6. Had the capacity to dissipate heat to its environment.

  so what
• Water is an excellent solvent for ionic compounds because of the attraction between the ionic components of the molecules and the water dipoles is sufficient to overcome the attraction between the ions themselves. 


  universal solvent
• Other substances dispersed by water are those hydrophobic group known as amphipathic molecules such as salts and fat acids and are called


  micelles
• Water is an irregular tetrahedron with oxygen at its center.The unequal distribution of charges with in a molecule is term as

  dipole. (electron dipole)
• Colligative properties such as freezing point and boiling point, vapor pressure and aromatic pressure are

  altered by solutes
• In aqueous system, addition and removal of H+ is best understood using the

  Bronsted-Lowry concept of acids and bases
• dissociates [ionizes] completely in acidic solution such as HCl and H2 SO4

  strong acids
• dissociates [ionizes] PARTIALLY in acidic solution such as CH3COOH.

  weak acid
• What is the pH of a solution whose [H+ ] ion concentration is 4.4 x 10-3 n/L?

  LOL
• Weak acids and weak bases though ionizes PARTIALLY in solutions have _ physiologic importance because of the formation of a conjugate acid and a conjugate base and can be expressed quantitatively as dissociation constants K

  GREAT/HIGH
• very useful to calculating pH and known solutions and for determining the amounts for an acid and its salt needed to prepare a solution at a given pH

  Henderson – Hasselbalch Equation
• A system that can resist a change in pH upon the addition of either acid or base is called a

  buffer
• Vital to the normal functioning of some enzymes and for the maintenance of functional conformation of proteins, nucleic acids, and carbohydrates

  Inorganic ions
• maganda ba gumawa neto 😊😊💓