Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
What is qualitative information?
|
tests that indicate the presence or absence of a biological molecule based upon changes observed.
ex: i2ki for starch in lab 2 |
|
|
What is quantitative information?
|
how much of a substance is present in a solution.
ex: benedict reagent testing serial dilutions for finding the amount of reducing sugars in samples. |
|
|
What is a serial dilution procedure?
|
a serial dilution of a stock solution results in each tube in the series having a fixed fraction of the concentration of the previous tube.
|
|
|
How does a spectrophotometer work?
|
spectrophotometers pass a narrow beam of light, with a specific wavelength, through a cuvet containing the solution. It them measures the amount of light that passes through, or is transmitted, by the solution. The absorbance of the solution is determined based on this and is displayed on the lower scale of the dial on it.
|
|
|
What is the difference between absorbance and transmittance?
|
the absorbance is based on how much transmittance there is.
|
|
|
What are the calculations for the protein solution?
|
plug the amount of the unknown in for y and solve.
|
|
|
Which are prokaryotes?
|
oscillatora, bacillus subtilis, e. coli
|
|
|
Which are eukaryotes?
|
Humans, onions, potatoes, elodea
|
|
|
What organelles do prokaryotes have?
|
chromosomes, cytoplasm, ribosomes
|
|
|
What is the structure and location of dna in a prokaryotic?
|
lack a nuclear envelope. dna is one circular chromosome
|
|
|
What is the structure and location of dna in a eukaryotic?
|
linear chromosomes, nuclear envelope
|
