Biology

• Rod cells are more sensitive to light than cone cells
• Hair erector muscle relaxes to reduce heat loss
• Oestrogen and progesterone are produced by the placenta during pregnancy
• Amino acids is coded for by a length of DNA
• Pectinase is an enzyme used in fruit production to break down pectin
• Recombinant plasmid is inserted into the bacterial cells to produce a desired human DNA
• The palisade mesophyll is an example of a tissue
• Plasmids is a circle of DNA and human genes can be inserted into it
• Antibiotic is the name of the group of medicinal drugs that includes penicillin
• Animal, plant, fungus and protoctist share the same genetic code
• Anaerobic respiration in yeast:

  C6H12O6 --> sC6H5OH + 2CO2
• Bacteria are prokaryotes
• Sustainable resources means a resource that is produced as rapidly as it is removed from the environment
• Hydrogencarbonate indicator solution:

  oxygen --> purple

  carbon dioxide --> yellow
• Translocation occurs in the phloem
• Vasoconstriction of skin arterioles occurs when the body temperature is too low
• Flue gas desulfurization is the process of removing sulphur compounds from the exhaust emissions of fossil-fueled power stations
• Bile is produced in liver and store in gall bladder
• Hepatic vein drain oxygen-poor blood from your liver into your inferior vena cava
• Excretion is represented by gas exchange in the alvoeli
• Auxin is made in the shoot tip
• Blood transfusions and sexual interactions will spread HIV
• The hypothalamus produces several releasing and inhibiting hormones that act on the pituitary gland, stimulating the release of pituitary hormones such as FSH and LH
• Follicle Stimulating Hormone (FSH) - stimulates ovaries to produce eggs and sperm production in males
• Luteinising Hormone (LH) - triggers ovulation and causes the corpus luteum to form
• The gene for insulin is only expressed by cells in the pancreas
• Kidney excretes urea, water and ions
• Water vapour increased in the composition of expired air compared to inspired air
• Receptors that detect carbon dioxide in the blood is located at the brain
• Not all plant cells have chloroplast