Exam 1 Flashcards
The concentration of potassium [K]+ is:
A. Higher inside than outside the cell?
B. Equal between the inside and outside of the cell?
C. Higher outside than inside the cell?
A. Higher inside than outside the cell?
The concentration of potassium [Na]+ is:
A. Higher inside than outside the cell?
B. Equal between the inside and outside of the cell?
C. Higher outside than inside the cell?
C. Higher outside than inside the cell?
PVT TIM HALL
Phenylalanine, Valine, Threonine, Tryptophan, Isoleucine, Methionine, Histidine, Arginine, Lysine, Leucine
Hydrophobic Amino Acids
Phenylalanine, Valine, Tryptophan, Isoleucine, Methionine, Leucine, Proline, Alanine
Basic Amino Acids (Positively Charged)
Histidine, Arginine, Lysine
Acidic Amino Acids (Negatively Charged)
Aspartic Acid, Glutamic Acid
Hydrophilic Amino Acids
Alanine, Cysteine, Glutamine, Glycine, Serine, Tyrosine, Threonine
Which is in the body?
D-sugars and L-amino acids
CORN
-Start will the carbon, then carbonyl, COOH then R-group and lastly amine. L is clockwise and D is counter clockwise
Which drug is more hydrophobic?
The drug with more benzene rings
pH+ pOH=
14
Nucelophiles
- Electron Rich
- Wants to give away electrons
Electrophiles
- Electron poor
- Wants electrons
Covalent Bonds
- Strongest bonds
- Sharing of electrons between atoms
Hydrogen Bonds
- A bond between a Hydrogen molecule and a molecule of N, F or O
Hemoglobin is composed of 4-subunits? This structure is
Quaternary
Plasma membranes are often
A. Acetylated
B. Glycosylated
C. Ubiquitined
B. Glycosylated
Which of the following enzymes is targeted by statins (cholesterol lowering drugs)?
A. HMG-CoA reductase
B. Acetyl-transferase
C. Fatty-acyl-CoA reductase
D. Glycogen phosphorylase
A. HMG-CoA reductase
Polyunsaturated fatty acids have:
A. one double bond.
B. more than one double bond.
C. no double bonds.
B. more than one double bond
Please select the correct answer. During glycolysis, 1 molecule of glucose produces.
A. 1 molecule of pyruvate
B. 2 molecules of pyruvate
C. 3 molecules of pyruvate
D. 4 molecules of pyruvate
B. 2 molecules of pyruvate
The drug prednisone is a corticosteroid that is used to treat many inflammatory diseases including asthma. Which of the following statements is true? The lipid bi-layer permeability coefficient of prednisone is:
A. Equal to that of Na+?
B. Lower than that of Na+?
C. Higher than that of Na+?
C. Higher than that of Na+?
Corticosteroids are amphiphilic so it’s both hydrophilic and hydrophobic so it can pass through the membrane. The permeability is higher than Na+ bc since its charged it cant pass through the membrane without a transporter
Synthesis of a new DNA strand is written in which of the following direction? Please select the correct answer.
A. 3’ to 3’
B. 5’ to 3’
C. 3’ to 5’
D. 5’ to 5’
B. 5’ to 3’
You read from 5’ to 3’. You write from 3’ to 5’
Which are Purines?
Purines have two rings. Adenosine and Guanosine
Which are Pyrimidines?
Pyrimidines have one ring. Cytosine, Thymidine and Uritidine
What would be the anticodon for the start codon AUU?
AUU
Which of the following statement about RNA polymerase complex is correct? RNA polymerase:
A. binds to the promoter region on the DNA strand.
B. participates in mRNA transcription.
C. participates in mRNA elongation.
D. participates in mRNA splicing
A. binds to the promoter region on the DNA strand.
B. participates in mRNA transcription.
C. participates in mRNA elongation.
RNA Polymerase does NOT participate in mRNA splicing
Which RNA strand is produced by the following DNA:
5’ CAGTTAAGCAGAT 3’
A. 5’ GUCAAUCGUCUA 3’
B. 5’ GTCAATTCGTCTA 3’
C. 5’ TAGACGAATTGAC 3’
D. 5’ AUCUGCUUAACUG 3’
D. 5’ AUCUGCUUAACUG 3’
You have to read it from 3’ to 5’. Then translate it
