General Flashcards
What is an element?
An element is something that cannot be divided into any smaller pieces
What is an isomer?
A different form of a molecule
What is the metabolism?
It is all the chemical processes that take place in living organisms
What is a molar solution?
A solution that contains one mole of solute in each litre of solution
How do you name chemicals?
Mono = one Di = two Tri = three Tetra = four Penta = five Hexa = six Poly = many
How do you create a mount for a light microscope?
Cut a thin slice of the sample
Add a cover slip
Flatten it to smooth out bubbles
What is vmax?
The maximum rate of reaction in any curve
Measures of rate
What is the optimum?
The highest value along the x axis e.g. pH
What is the stock solution?
The original solution
What is the mass of 1 centimeter cubed of water?
1g
What is a serial dilution?
Any dilution where the concentration decreases by the same quantity in each successive step
A serial dilution is multiplicative
How do you work out serial dilutions?
- Calculate dilution factor: stock/solution needed
- Find out the volume needed of stock solution: volume needed/dilution factor
- Find volume of water needed: final solution - part 2
- Add together volumes: part 2 + part 3
How many pairs of chromosomes do humans have?
23
Why do pieces of leaf tissue need to be very thin for a light microscope?
To show only one layer of cells
To allow light through
What are homologous chromosomes?
Two chromosomes which carry the same genes
