key terms

• acrosome = organelles in tip of sperm which contains enzyme to digest egg cell membrane
• active site = specific region on enzyme where substrates binds and reaction takes place
• cell = basic building block of all living organisms
• diploid cell = cell that can contain 2 copies of each chromosome (46, full set)
• haploid cell = cell than contains 1 copy of each chromosome
• enzyme = biological catalyst than increases rate of reaction in living organisms
• lock and key hypothesis = theory that describes how substrate muse be correct shape to fir active site of enzyme
• protease = enzymes that break down proteins to make amino acids
• Benedict's test = tests for reducing sugar, it makes different colours when count of reducing sugars is present

  • from blue to red they reducing sugars are present
• biuret test = produces purple colour when solution has protein

  • if colour turns from blue to lilac/purple then protein is present
• ethanol = Ethanol, methanol and propanol are types of alcohol. They are used as fuel and solvents, and ethanol is also found in alcoholic drinks. Also featured is infrared spectroscopy for higher tier students.