#Question
1Write down an organic reaction you have studied at school and explain its mechanism.  
2Why don't animals have wheels?
3Why are big, fierce animals so rare?
4which way is the earth spinning? 
5When an ice cube melts in a glass of water, does the water level increase, decrease or stay the same?
6What would you do if I were a Magpie?  
7What makes some chemicals explosive?
8On a hot day, what should you do with a fridge?
9is there blood in your brain 
10if you were a rat what would be the most important thing to you? (I think he wanted me to say food!)
11if you had to look back on 2005 in ten years' time, what would you tell people about it? 
12if I wanted to create a new strain of potatoes that were purple, how would I go about doing this? 
13If a carrot can grow form one carrot cell, why not a human?
14how would you cope if you weren't getting top grades if you were studying here?
15How many animals did Moses take on the arc?
16How does the immune system recognise invading pathogens as foreign cells?
17how does an electric guitar work? 
18do you think Neanderthals understood the concept of death 
19Discuss ways in which plants are adapted to dry conditions.
20Describe a potato and then compare it to an onion. 
21 is it an advantage for a virus to kill its host? 
22How many amino acids are there?
23How many triplets are there?
24How many, exactly?
25Discussion on Darwin’s theory as to why a population relying on sexual reproduction is most successful when there are equal numbers of males and females although reproductively you only need one male for lots of females. 
26Debate on the meaning of birth to encompass chickens etc.
27A problem involving DNA separation and the time taken for them to rejoin.
28The shape of a graph for incidence of cancer in the population, and why the lines for male and female were different. 
29If you were powered by batteries for a whole day, how many would you need and how much would they weigh (at 100g a cell)?
30Properties of phospholipids, cell membranes and ion channels (and drawing them)
31Questions about DNA (what is it made of, draw a picture of it)
32Hydrogen bonding
33Why is the difference in hydrogen bonding between base pairs important for PCRs, enzyme energetics, disulphide bonds and how you break them, protein denaturation
34Why are disulphide bonds weaker than C-C bonds?
35Evidence for the evolution of the eye.
36Resolve this equation by finding a function that doubly derivated would end up giving the same function plus a constant 
37Draw the function sin (2x)
38Draw some molecules, say why their place in the periodic table could allow them to interact in such a particular way
39Analysis of some genetically related blood disease in Africa
40Creation of hands during the embryonic development
41Phospholipid bilayer
42What are action potentials? How are they generated? How do they pass along the axon? 
43How do synapses work? 
44Mental illnesses
45What is a gene? If i gave you a test tube full of DNA, devise an experiment to show that it contains genes
46Why is DNA the genetic code? Why not proteins? 
47How many nucleotides in the human genome?
48Describe the structure of DNA in as much detail as possible.
49What are bases?
50What do A, T, C and G stand for?
51How is the double helix nature of the molecule important?
52Describe DNA replication
53What is the name of the enzyme that splits the DNA strands apart?
54What is the name of the enzyme that bonds the nucleotides of DNA together into a polymer in DNA replication?
55What is the name of the type of bond that this enzyme makes between nucleotides?
56The above enzyme can form about 60 phosphodiester bonds per second, and would take about a month for this enzyme to work its way along the chromosome and replicate the entire human genome in this way, but it only takes an hour or two in reality, how can this be?
57How does the enzyme which splits the DNA molecule apart and know where to do this if it is at a point somewhere in the middle of the molecule?
58What kind errors can happen when copying DNA?
59Describe substitution
60Describe addition/deletion
61What are the possible consequences of frame shift?
62What does a stop or start codon actually code for? (i.e. an amino acid?)
63What is a chromosome?
64Describe mitosis in as much detail as possible
65Describe meiosis in as much detail as possible
66If a dog has 78 chromosomes, how many in its gametes? (it sounds stupid, but it was ridiculously hard to do maths in my head on the spot under pressure, and it took me about 20 seconds to get to 39! But he was nice, he just laughed about it)
67Derive a formula or a rule for finding out the possible number of different chromosome combinations that you could apply to any organism (so for an organism of n chromosomes…)
68The cloned embryo in America 
69The interviewer held up a shell and I had to work out the characteristics of the creature that inhabited it from the features of this shell.
70How a bouncing ball loses energy
71Did I think aerobic or anaerobic respiration had evolved first and why
72The human genome
73Why don’t humans and other mammals grow back limbs that have been lost in a similar way to lizards and crustaceans? 
74What is cell ultrastructure, why can’t it be seen by a light microscope?
75How does an electron microscope work? What are the limitations? 
76Draw a mitochondria, relate structure to function. 
77Where may mitochondria and chloroplasts have originally have come from, what evidence is there for this? 
78What causes evolution? 
79The interviewer clicked a castanet and then told me to point to where it was with my eyes closed (he moved it around and clicked) I pointed to the right spots then had to work out how. He asked: how can your brain tell the difference? At what frequency might there be a problem with one of them?
80Write out the second period of the Periodic Table, then asked me how 2 of these elements bonded together. He then went on to ask about the bonding between carbon and oxygen, and then asked me about carbon monoxide.
81I was then shown a version of the periodic table with all the elements at different heights, and was asked to show what this represented
82Some questions about bond strengths down group 4, and was asked to transfer this knowledge to explain some anomalies which nitrogen showed, which was in group 5.
83Skeletal formula
84Draw 2-Lithiobutane, reactions with halogenoalkane why and how
85Optical isomerism in products and bonding in products
86Acid-base Equilibria
87Consider forces on 2 spheres of differing densities falling through air, and related drag
88Dynamics of electrons in currents
89Gravitation and explaining tides
90Estimate the number of air molecules in this room?
91How can you stop this postcard tumbling in the air by placing paperclips on it?
92Electromagnetism
93Electrical circuits
94Rates of reaction stuff and some materials things
95Tension
96Estimate how many light bulbs I thought had been changed in the UK the day before.
97Polymers 
98Kinetics
99Rates of reaction
100Mechanisms
101Curve sketching
102Differentiation
103Probability
104Differences and similarities between diamond and graphite
105Viscosity
106Newton’s laws of motion
107Electromagnetism and its use in a microwave-oven
108What I understood as mass.
109Drawing graphs of motion 
110Integrate x.sin(ax).dx between 0 and 1
111Sketch y=1/theta on the x-theta plane, then y=sin(theta) then finally y= sin(theta) / theta. 
112 I was given many circuits and asked to calculate resistance/capacitence etc
113Ek —> Ep
114Drawing graphs of vertical and horizontal displacement against time
115Organic mechanisms
116Rate equations 
117Friction between two surfaces at the atomic level.
118Logarithms
119 I was requested to comment on a system where a mass was oscillating on a spring
120Shapes of molecules.
121How could we deduce bond angles?
122Isotopes. 
123Builting up the periodic table and relating it to compound formation. 
124Drawing dot and cross diagrams
125Explain about quantum mechanics in terms of absorption/emision spectrum
126The difference in force and energy of two objects.
127Bonding and bond angles.
128Dropping stones into a well and timing the sound to find the depth
129Dropping bits of card of different width and s.a. at different angles.
130Give the bond angles present in CH4, NH3, and H20. 
131Draw the reaction that takes place when ammonia is placed in water. 
132Describe why specific organic monomers will spontaneously form polymers despite a decrease in entropy and for one, no change in the number or strength of bonds.
133Integrate sin x
134Springs and circuits
135Kinetics
136Variations on nucleophilic substitution of Cl- into CH3. 
137Resolving the forces acting on the top bar of a picture frame and then what would happen if the bar was cut in half and put back together.
138Give me an example of a real life application of particles acting as waves.
139Use binomial expansion to give me an estimate for root 50.
140Prove, using the idea that photons will take the shortest path, that light will bend towards the normal when it enters a denser material.
141Questions about strength of carboxylic acids with the addition of various other molecules, and varying carbon chain length. 
142NMR
143Chirality. 
144What gases are ‘greenhouse gases’
145Quantum and particle physics
146Circuits
147Isomerism
148Why, given the electron configuration of methane, are all the bonds the same length? 
149You are in a lift which accelerates at 1g upwards: how does the period of the pendulum you are swinging change?
150Sketch (x^3)/((X^2)-1).
151Projectiles
152Electrical Power 
153I had to plot the graphs of 1/x, then sin(x), then the product of the two.
154Plot the graphs of acceleration, velocity and displacement of a ball rolling down a hill that was initially vertical, but curving until it was horizontal. 
155Factors that might affect how ice on the top of a frozen pond might melt.
156Questions about an imaginary satellite orbiting the Earth and the gravitational effects that it feels.
157Spectroscopy and how it works
158I was asked about a shell, and the creature that lives inside it.
159Boiling water, and adding washing-up liquid to it, then adding oil to it, and would it boil over in either of these cases. 
160Why fish die when they are brought up from deep down in the sea to the surface.
161 Density of Water graph at different states 
162Hydrogen bonding in water 
163Bond Angles in Water and Carbon
164Carbon Dating
165Non-Newtonian Solids 
166Isotopes
167Estimate the no. of gaseous atoms in the room.
168I was given an equation related to energy and distance between two nucleus and told to plot it.
169What will happen if we pull two nucleus apart and let go? 
170How does force between the two nucleus and their potential energy relate to each other then?
171String theory
172Estimate the power needed to keep a helicopter hovering in the air
173What is Newtons Law of Gravitation 
174How much higher could someone jump on moon given that radius of earth is 4 times that of moon. 
175How did Newton measure speed of sound in Nevilles Court using a clock. This clock was a boring non-chiming clock. 
176Sketch y=xsinx from scratch.
177 I was given the first and last elements of period 2 and was asked to fill in the rest of the period. I then had to choose 2 elements from period 2 and describe the bonding between them.
178Discussion about the electrostatic forces holding a crystal of lithium fluoride together.
179Calculate the force of attraction between the lithium cation and the 6 neighbouring fluoride anions assuming that the distance between the ions is 1 unit.
180The intramolecular bonding in carbon monoxide and dioxide.
181The principle of the greenhouse effect. 
182Why isn’t nitrogen a greenhouse gas? 
183Why is the radiation reflected from the earth of a lower frequency than the incoming radiation from the sun? 
184Definition of pH. 
185When you have a concentration of H+ ions of 0.01, what is the pH? Dilute 1000 times. what’s the pH now? Dilute 1000 times again. What’s the pH now?
186I was given 3 graphs of displacement against time (a straight-line graph with zero gradient, a straight-line graph with a non-zero gradient, a sine wave) and I was expected to draw the velocity against displacement graphs.
187Draw the graph of mass against velocity 
188Why a hammer and feather fall at the same rate on the moon 
189Carboxylic acids and the bonding of -OH and -SH groups
190About relative gravitational fields of the Sun and Earth, and their effects on the tides
191Draw the line (sinx)/x
192What is the ratio of energy expenditure of a cyclist with a 5ms head/tail wind and 90deg.
193Entropy changes 
194Centrifugal force
195Integration
196Measuring temp of sun
197Heater – why not use copper for element.