Four Molecules - Anderson - Oxygen

Question 1

appearance of oxygen

Answer 1

colourless odourless tasteless gas at standard temperature and pressure

Question 2

temperature oxygen condenses at

Answer 2

90.2K

Question 3

what does liquid oxygen look like

Answer 3

blue liquid

Question 4

percentage of oxygen in the earth’s crust by mass

Answer 4

49.2%

Question 5

what number of abundance is it in the universe

Answer 5

third

Question 6

what is the chemical revolution

Answer 6

changes in the concentration of atmospheric oxygen are thought to have driven evolution

Question 7

aim of alchemy

Answer 7

purify, mature and perfect certain objects

Question 8

common ambitions alchemy

Answer 8

find the philosophers stone 
to transmute base metals
be an elixir of life
be a panacea to cure any disease
develop an alkahest universal solvent

Question 9

phlogiston theory

Answer 9

to inflame
every substance contains phlogiston which is released on combustion
ait absorbed it and once too much was absorbed it could no longer sustain burning

Question 10

equation for phlogiston

Answer 10

metal -> metal calx + phlogiston

Question 11

how to regenerate a metal with phlogiston

Answer 11

heat the metal calx with phlogiston rich charcoal

Question 12

who discovered oxygen

Answer 12

joseph priestly

Question 13

what are myoglobin and haemoglobin

Answer 13

iron-containing oxygen storage and transport metalloproteins found in the muscles

Question 14

difference between haemoglobin and myoglobin

Answer 14

myoglobin is a monomer

haemoglobin is assembled from four protein units that resemble myoglobin

Question 15

what makes up a haem group

Answer 15

iron ion held in a heterocyclically ring known a porphyrin

Question 16

what was the first structure of a protein to be found by x-ray crystallography

Answer 16

myoglobin then haemoglobin

Question 17

how many O2 are bonded in a haemoglobin

Answer 17

4

Question 18

what is positive cooperativity

Answer 18

after the initial binding of one O2 molecule, the bonding of subsequent ones becomes easier

Question 19

what is the sigmoidal oxygen response

Answer 19

the shape of the graph of how fast each oxygen binds

Question 20

what is cooperativity

Answer 20

when the haem group changes shape after one binds to allow easier binding of more and vise versa

Question 21

what allowed for larger organisms evolutionarily

Answer 21

rise in atmospheric oxygen