Chemistry Flashcards
Is NaBH4 or LiAlH4 a stronger reducing agent?
LiAlH4
What is the structure of guanine?
What is the structure of adenine?
What is the structure of cytosine?
What is the structure of thymine?
Arginine
Histidine
Lysine
aspartic acid
aspartic acid (asp)
Glutamic acid (GLU)
Serine
Threonine
Asparagine (asn)
Glutamine (Gin)
What type of geometry corresponds with dsp3 hybridization?
trigonal bipyramidal
What type of geometry corresponds with d2sp3 hybridization?
octahedral
What type of geometry corresponds with dsp2 hybridization?
square planar
What type of geometry corresponds with sp3 hybridization?
tetrahedral
How many equivalents of a strong base (NaOH) are needed to neutralize a an acid?
One equivalent per acidic proton (2 for H2SO4)
If pH > pKa, will the the equilibrium shift towards protonated species or deprotonated species?
Deprotonated because if there is a lot of acid(protonated species) then the equilibrium will shift towards the deprotonated species
What is the henderson-hasselbalch equation?
pH = pKa + log (conj. Base/ conj. acid)
What is the dissociation equilibrium constant Keq equal to when given Ka?
1/Ka
What are the Purines?
Adenine and Guanine
What are the pyrimidines?
Thymine and Cytosine
Which sequence properly indicates the order of transmission for the impulses that result from transcranial magnetic stimulation?
Cerebral cortex, spinal cord, efferent neurons, skeletal muscle cells
what is a positive control?
a control group that is not exposed to the experimental treatment but that is exposed to some other treatment that is known to produce the expected effect.
what is a negative control?
A negative control group is a control group that is not exposed to the experimental treatment or to any other treatment that is expected to have an effect.
How are nM and uM related?
1 nM to 0.001 uM
How are uM and mM related?
1 uM to 0.001 mM
The half-life of a radioactive material is:
the time it takes for half of all the radioactive nuclei to decay into their daughter nuclei.
Where does the P come from in ATP when it is transferred via a kinase?
the gamma phosphate
Which nucleotide bases create stronger interactions in DNA?
C-G
They have greater pi stacking
How are phospholipids strucutred?
Three fatty acids ester-linked to a single glycerol
How do oxidation and reduction occur in a cell?
oxidation at the anode and reduction at the cathode
What is the Ksp equation?
How many electrons can occupy an energy level with quantum number n?
2n^2
How many electrons can occupy a subshell w quantum number l?
2l^2 + 2
