Core Biology Revision Quiz Don’t forget that your exam is Thursday 12th January.

1) Healthy living What is metabolic rate? What does the body use “good” Cholesterol for? Who is this person? “Meal Seizing Mews” What did this person introduce into medical practice that still happens today? What do antibodies attack? Why don’t doctors prescribe antibiotics for colds? What is in a vaccine?

2) Coordination and control Name a stimulus What are the 5 steps of the reflex arc? What does FSH do? What does Oestrogen do? How can your body warm up naturally? What does insulin do? How does auxin support phototropism?

3) Drugs What is a double blind trial? What is a statin? What happened with Thalidomide? Why to people who stop smoking get withdrawal symptoms? Alternative medicines are not prescribed by doctors, why? Why is it wrong for Athletes to use steroids?

4) Adaptation How do oily feathers keep penguins warm? Why do predators have forward facing eyes? What ratio on animals indicates how easily they cool down? Why does a cactus have spikes? How have plants adapted to spread seeds? Name ways that we can measure environmental change.

5) Energy in biomass Why is a pyramid of numbers different from a pyramid of biomass? How is energy lost as it moves up the food chain? What is a detritus feeder and how does it link into the carbon cycle? How does carbon get out of the air in the cycle? How does the carbon in a dead mouse get into the atmosphere?

6) Variation What is a gamete? How are sexual and asexual reproduction different? Why does sexual reproduction generate more variation? Why do people clone cattle? How are the two cells in cloning fused and stimulated? What are the concerns about genetically modified crops?

7) Evolution How were Lamark and Darwin different in their ideas? Why could Darwin not explain variation? How does natural selection link into evolution? What is survival of the fittest? How were Darwin’s finches different?

Mark your own! Give yourself a score for each of the 7 topics. The topic that you score least on is your first revision priority. Answers next...

1) Healthy living The rate at which reactions occur in cells. Making cell membranes Ignaz Semmelweis Hand washing in hospitals The antigens on pathogens Antibiotics have no effect on a virus An injection of a weakened or dead pathogen

2) Coordination and control Bright light, sound, touch, temperature change... Receptor -> Sensory Neurone -> CNS -> Motor Neurone -> Effector Makes an egg mature in the ovary Thickens the lining of the uterus Hair stand on end and muscles “shiver” Lowers blood glucose level Secreted at shoot tip, area in light is destroyed to dark side grows, bending shoot towards light.

3) Drugs Neither patient nor doctor know if they have drug or placebo. Drug that lowers cholesterol Not tested on pregnant women, caused limb abnormalities in babies. Addicted to nicotine. Not scientifically proven Unfair advantage over others especially those who couldn’t afford them

4) Adaptation Stops cold water getting to skin. Can judge distance to prey. Surface area to volume ration Stop animals eating them, especially after water. Fruits, flying seeds, sticky seed pods etc... Populations of animals, lichen coverage, average temperatures, pollution levels in rivers etc...

5) Energy in biomass Total mass rather than number of organisms Movement, inefficient digestion, repair of injuries, not being eaten by predator... Worms and maggots, accelerate decomposition and release trapped carbon Photosynthesis and dissolving in oceans. Worms/maggots -> bacteria/fungi which break down complicated carbon containing molecules in carbon dioxide.

6) Variation A sex cell Only one parent in asexual Mixture of two parent’s chromosomes Reproduce a perfect or ideal specimen Electric shock They may breed with near by normal species and create a mutation. They may also take over existing species and wipe it out leaving only the modified one.

7) Evolution Lamark thought you could change your own characteristics over time, Darwin thought that new characteristics simply made you more likely to survive and have more offspring. Did not know about chromosomes/genetics then. Evolution is made up of many individual stages of natural selection. Most successful individuals hunt/eat better or fight better so will live longer and have more offspring. Beaks adapted for the food they ate

www.stokescience.co.uk How did you do out of 42? Make a revision plan by topic. Use all of the resources available: VLE Kerboodle Web All of these questions came from the revision site: www.stokescience.co.uk