Midterm 1 SOS Flashcards
A scientific theory….
a. Is a guess that scientists have formulated but not yet tested
b. Requires many more additional independent observations before wide acceptance
c. Consists of tentative observations
d. Once formulated can never be changed
e. Has lots of evidence and is a well-sustained explanation
E
Which of the following is suspected to have the highest boiling point:
a. Propan-1-ol (CH3-CH2-CH2-OH)
b. Propane (C3H8)
c. Propanal (CH3-CH2-CH2=O)
d. Cyclohexane (C6H18)
A
Which of the following is NOT a characteristic of water for life on Earth:
a. Strong intermolecular forces with other H2O
b. Readily dissolves lipids in body
c. Relatively large amount of energy needed for temp. change d. Universal solvent via hydration shells
e. Higher density relative to solid state
B
DNA contains a ______ bond between the 3’ OH and 5’ phosphate. It can be best described as a _______ bond. Bonds between the nitrogenous bases are _______ bonds.
a. Phosphodiester, Covalent, Hydrogen
b. Peptide, Covalent, Hydrogen
c. Phosphodiester, Hydrogen, Covalent
d. Glycosidic, Hydrogen, Dipole-Dipole
e. Phosphodiester, Hydrogen, Hydrogen
A
Which of the following is an example of a disaccharide
A. Chitin
B. Cellulose
C. Glycogen
D. Maltose
E. Glucose
D
Which of the following is FALSE about proteins?
a. The primary structure can dictate the secondary and tertiary folding
b. Interactions between amino acid side-chains cause 2o structures such as
Alpha-Helix and Beta-sheet
c. Some proteins need tightly bonded modifications called prosthetic groups
d. Quaternary structures can arise from multiple protein subunits
e. Peptide bonds can be formed through dehydration synthesis, but can be
cleaved through hydrolysis
B
Which of the following makes the membrane less fluid?
a. 32 C lipid with 3 double bonds
b. 32 C lipid with no double bonds
c. 70 C lipid with no double bonds
d. 70 C lipid with 3 double bonds
e. 16 C lipid with no double bonds
C
Which of the following would make for a good research question?
a. Spoiled kids are more annoying
b. Wider-shouldered athletes can swim 100 meters faster
c. Kids are better when they get sleep
d. Unicorns hate zookeepers
e. All are good research questions :)
B
- When a membrane is more fluid than viscous:
a. The majority of the phospholipids are unsaturated.
b. The phospholipids are more densely packed together.
c. The phospholipids are less densely packed together.
d. A and B only.
e. A and C only
E
What causes familial hypercholestrolemia?
A. Defective LDL receptor
B. Défective CFTR receptor
C. Défective Channel protein
D. Défective Carrier protein
A
True or false: a cell in a hypotonic solution shrinks
False
Using which interaction do peripheral membrane proteins bind to the membrane of the cell?
a. Hydrophobic interactions
b. Noncovalent interactions
c. Covalent Interactions
d. None of the above
B
Suppose that you are examining a cell from a crime scene using an electron microscope, and you find that it contains ribosomes, DNA, a plasma membrane, a cell wall, and mitochondria. What type of cell is it?
a plant cell
a prokaryotic cell
a cell from the surface of
a human fingernail a sperm cell
Plant cell
