Flashcards in Exam 1 Deck (42)
What is the correct order of the scientific method?
Observation, question, hypothesis, experiment, data analysis, conclusion.
THe independent variable?
Is changed by the experimenter
They Null hypothesis of an experiment is?
an alternative possibility in the event that the explanation being tested does not apply
What is mean?
What is median
What is the mode?
Most used value
Which is NOT a category of proteins?
Defensive, Structural, Cell transportation, Offensive, Intracellular movement, Cell signaling
Know a good example of normalized data?
What is the dependent variable?
Measured by the experimenter, usually the Y Axis
What is a negative control?
Placebo, insures that results are not due to the testing nature of experiment.
Who is the person who taught the library literacy class?
Polypeptides are ordered?
From the N-terminus to the C-terminus.
Which of the following observations is the strongest arguement in favor of the hypothesis that protein structure and function are correlated?
1- Enzyme3s tend to be globular in shape
2-Incorrectly folded proteins do not function properly.
3-Proteins function best at certain temperatures.
4-Proteins have four distinct levels of structure and many functions.
2- Incorrectly folded proteins do not function properly.
What are the categories of R-groups in a protein?
Hydrophobic, Hydrophilic, Acidic
In a protein, what is most responsible for the secondary structure called an alpha-helix?
Hydrogen bonds that form between carbonyl and amino groups on different residues
When counting a string of amino acids where do you start?
Start with Amino group, this counts as first one
Which nitrogenous base is used only in RNA?
Which of the following best describes tertiary structure?
Covalent bonding between two Sulfur atoms in R-group side chains of amino acids
Which of the following best describes secondary structure?
Hydrogen bonding between portions of the backbone of the polypeptide
Know the images of pentose sugar
it is a ribonucleotide
DNA is written:
5' to 3'
The cell theory put to rest which popular theory in the eighteenth and nineteenth centurey?
Theory of spontaneous generation
Glycoproteins are important signal proteins. where are these types of proteins usually found on the cell?
On the exterior of the cell
Erwin Chargaff researched and established?
The ratio of purines to pyrimidines in the molecule
The amino acid Valine is gernerally found in the interior of globular proteins and in Membrane proteins. What characteristic of this amino acid can we infer from this information?
The amino acid is hydrophobic
According to Dr. Geary, the state that grows the best potatoes
Which of the following contributes to osmotic pressure?
Which of the following is an attribute of an unsaturated lipid bilayer?
Double bond between fatty acid carbons
The water moves to the side with them most molucules to even out the solution