BIOL 130
CHEM 120
PHYS 111/121
MATH 127/136/137
PSYCH 101/ GEOG 101
EARTH 123 / ENV 195
EARTH 123 / ENV 195
100
What differences might you expect to see in the cell membranes of organisms that live in colder environmental conditions?
You might expect to see the phospholipids in their cell membranes have longer fatty acid tails and more cis-double bonds to increase membrane fluidity and prevent gelling.
100
Determine the electron configuration of Ti. Determine the number of radial and angular nodes.
[Ar] 4s2, 3d2
3d orbital, radial nodes = 0, angular nodes = 2
100
Which two kinematics equations are only applicable to CONSTANT acceleration?
What is DeltaX = 1/2(v1+vf)DeltaT and DeltaV = aDeltaT ?
100
If P(t)=70, and P(t)=290(½^(t/8)), solve for t. Give your answer with one decimal place.
What is t=16.4?
100
Freud’s psychoanalysis theory consists of the three concepts of id, ego, and superego. Which of the three is responsible for recognizing societal rules/consequences?
What is Ego?
200
A student hopes to freshen up their soggy carrots by placing them in a bowl of distilled water. What mechanism is actually at play here, and what should happen to the carrots?
Distilled water is a hypotonic environment to the carrot. Water will move into the carrot (which has a higher solute concentration), making it crunchier.
200
Draw the most important Lewis structure for PCl5. Answer the following questions:
What is the VSEPR electron group geometry?
What is molecular geometry?
Is this species polar or nonpolar?
Trigonal bipyramidal; Trigonal bipyramidal; non-polar
200
List all the forces acting on a tennis ball and the racquet during contact and what these forces are from (ie. where is the applied force from).
Ball: what is gravity, static OR kinetic friction, and the applied force from the racquet?
Racquet: What is gravity, the applied force from the person, and the applied force from the ball?
200
What is the limit of the function f(x)=n^2/ (2n^2+1) as x approaches +infinity?
What is the limit as x approaches +infinity is ½?
200
Training people in developing countries to take on development on their own is an example of what aid approach?
What is Technical Aid?
300
How might the uptake of nutrients in the gut epithelium be impacted if the sodium potassium pump were not present?
In the gut epithelium, glucose must move AGAINST its concentration gradient via coupled secondary active transport with sodium. This sodium moves passively into the gut epithelium (where the Na concentration is lower) to maintain this low concentration, we must make use of the sodium potassium pump.
300
Consider the structure of the following molecule.
How many sigma bonds are present? How many pi bonds?
12 sigma bonds, 3 pi bonds
300
A steel ball with mass m is suspended from the ceiling at the bottom end of a light, 15.0 metre long rope. The ball swings back and forth like a pendulum. When the ball is at its lowest point and the rope is vertical, the tension in the rope is three times the weight of the ball, so T=3mg
What is the speed of the ball as it swings through this point?
What is 17.1 m/s?
300
Determine y’ of: 2(x^2)(y^3)= x^5 + 4y^3, using implicit differentiation
What is (5x^3-4y^3) / 6y^2 (x^2-2) ?
300
What term describes the evaporation from waterbodies and water used by plants in growth and transpiration?
What is Evapotranspiration?
400
Checkpoints play a key role in ensuring proper cell division occurs. Describe the three checkpoints a cell must pass in order to successfully complete mitosis, naming the main mechanism of regulation at play.
Three checkpoints include the restriction point (G1/S) the G2/M checkpoint, and the spindle checkpoint (in the M phase)
400
Calculate the amount of H3PO4 produced (in grams) if 29.1g of HCl is produced. Answer with 3 significant digits.
PCl5 + 4H2O → H3PO4 + 5HC
15.6g
400
What is a correct expanded formula for the conservation of momentum during a collision between a bullet and the edge of a rotating solid disk? Define your variables. Assume the velocity of the bullet encourages rotation of the disk (ie. the tangential velocity of the bullet is in the same direction as the tangential velocity of the disk where it strikes)
What is mbRvbi + Idωi = (Ib+Id)ωf
400
Equation of graph: f(x)=x^3-sinx-0.357.
Is the following statement TRUE or FALSE: “The point (-0.535,0) is a global maximum”.
FALSE
400
Name the four spheres of the Earth:
What are the atmosphere, biosphere, lithosphere, and hydrosphere ?
500
The use of a toxin causes a mutation in the g-proteins of an organism that interferes with their GTP-ase activity. What impact would this have on signalling within the organism?
G proteins would remain active and continue to send signals unnecessarily throughout the cell. This might impact a pathway like the phospholipase pathway.
500
0.05 mole of ideal gas at 100C has a pressure of 200kPa. Calculate the volume of the gas. Give your answer with 3 significant digits.
v= 0.776L
500
What two 'rules' must be true if an object is in translational and rotational equilibrium?
What are SumTorque = 0 and SumForce = 0 ?
500
What is the antiderivative of x^4?
What is F(x) = ⅕(x^5) +C ?
500
What percentage of greenhouse gas emissions are caused by agriculture?
What is around 10% ?