Biology Answers

Find the equation of the line which passes through the point (9,5) and has slope 1. Give your answer in the form y=m x+b. The constants should be given exactly, e.g., 1/3 rather than 0.33.

A reversible chemical reaction combines A and B to produce C and D. At equilibrium, A, B and C are present in concentrations 1 M, 0.05 M, 500 mM respectively.

If the rate constants are k1=2M^{-2}s^{-1} and k2 = 1 M^{-1} s^{-1}, what is the concentration of D in M at equilibrium? Give the result to three significant figures.

A chemical dye absorbs light with wavelength 578 nm.

Using a standard solution of concentration 0.7 mM, the absorption is measured

to be 0.8 units. The absorption for a solution of unknown concentration is then

measured and found to be 0.6 units. What is the concentration? Give the answer to

at least 3 significant figures.

1) If calcium and phospate ion concentrations are adequate for crustallisation, why desnt it occur throughout the body ?

2) if calcium and phospate ion concentrations are not adequate for crystallisation, why should it occur at all ? and suprisingly at specific locatio.

How many gametes are possible with the 3 genes of an individual of genotype AaBRBBCc

What is the platelet rotator temperature limits?

  a) -18 degree C or colder

 b)  1-6 degrees C

c)   20-24 degrees C

  d) 30-37 degrees C

Creepers never breed true,if bred together,they yield two-thirds creepers and one third normal,what is the explanation for it's inheritance of this condition?

4. In organic chemistry and biochemistry labs, diethyl ether (CH₃CH₂OCH₂CH₃) and water (H₂O) are often used to do liquid/liquid extractions. These two liquids form two layers or are immiscible.  

(a) Why are they immiscible, i.e. why do they form two layers?

(b) You are extracting Vitamin Alpha and Vitamin Omega from a new microbe that has been discovered in an underwater steam vent and find that (i) Vitamin Alpha separates into the water fraction, what functional groups would you expect on it? Why? (ii) You find that Vitamin Omega separates into the diethyl ether fraction, what functional groups would you expect to find on it? Why?