BCH 351 Exam 2-Questions With 100%
Verified Answers.
LDL - low density lipoprotein - ✔✔Which lipoprotein particle transports lipids to
peripheral tissue?
the protein Apolipoprotein B-100 targets the LDL to peripheral tissues throughout the body
- ✔✔How are LDL lipoprotein particles recognized by the peripheral tissues.
HDL - High density lipoprotein - ✔✔Which lipoprotein particle transports lipids from the
tissues back to the liver?
HDLs are "good" cholesterol because they transport cholesterol back to the liver for disposal
- ✔✔What is "good" cholesterol?
unsaturated - ✔✔Do unsaturated or saturated phospholipids increase plasma
membrane fluidity?
increases - ✔✔Does placing a plate of animal cells from room temperature (25 C) to a 37
C incubator increase or decrease membrane fluidity?
micelles have a single lipid layer, but liposomes have a lipid bilayer - ✔✔What is the
difference between a micelle and a liposome?
increase - ✔✔Does the cholesterol within a phospholipid bilayer act to increase or
decrease membrane fluidity?
Guanosine 5'-monophosphate & Adenosine 5'-monophosphate - ✔✔Name the
purine nucleotides in RNA
, uridine 5'-monophosphate & Cytidine 5'-monophosphate - ✔✔Name the
pyrimidine nucleotides in RNA
Nucleotide - ✔✔contains base, sugar, and phosphate
Nucleoside - ✔✔contains base and sugar
3 - ✔✔Number of hydrogen bonds in GC base pair
2 - ✔✔Number of hydrogen bonds in AT base pair
hyperchromic effect - ✔✔results when double-stranded DNA is denatured to single
stranded DNA and increases absorbance
Mg2+ interacts with the negative charge on the phosphates of ATP to neutralize the charge -
✔✔the role of Mg2+ in binding ATP to an enzyme
the Fe2+ on the heme interacts with oxygen - ✔✔The role of Fe2+ in myoglobin
Fe2+ acts as a redox center, and can be oxidized to Fe3+ - ✔✔the role of Fe2+ in the (2Fe-
2S) iron sulfur cluster
FADH can carry one or two electrons - ✔✔How many electrons can FAD carry?
SAM carries methionine - ✔✔What is the role of the cofactor S-adenosyl-methionine
in enzyme reactions
Verified Answers.
LDL - low density lipoprotein - ✔✔Which lipoprotein particle transports lipids to
peripheral tissue?
the protein Apolipoprotein B-100 targets the LDL to peripheral tissues throughout the body
- ✔✔How are LDL lipoprotein particles recognized by the peripheral tissues.
HDL - High density lipoprotein - ✔✔Which lipoprotein particle transports lipids from the
tissues back to the liver?
HDLs are "good" cholesterol because they transport cholesterol back to the liver for disposal
- ✔✔What is "good" cholesterol?
unsaturated - ✔✔Do unsaturated or saturated phospholipids increase plasma
membrane fluidity?
increases - ✔✔Does placing a plate of animal cells from room temperature (25 C) to a 37
C incubator increase or decrease membrane fluidity?
micelles have a single lipid layer, but liposomes have a lipid bilayer - ✔✔What is the
difference between a micelle and a liposome?
increase - ✔✔Does the cholesterol within a phospholipid bilayer act to increase or
decrease membrane fluidity?
Guanosine 5'-monophosphate & Adenosine 5'-monophosphate - ✔✔Name the
purine nucleotides in RNA
, uridine 5'-monophosphate & Cytidine 5'-monophosphate - ✔✔Name the
pyrimidine nucleotides in RNA
Nucleotide - ✔✔contains base, sugar, and phosphate
Nucleoside - ✔✔contains base and sugar
3 - ✔✔Number of hydrogen bonds in GC base pair
2 - ✔✔Number of hydrogen bonds in AT base pair
hyperchromic effect - ✔✔results when double-stranded DNA is denatured to single
stranded DNA and increases absorbance
Mg2+ interacts with the negative charge on the phosphates of ATP to neutralize the charge -
✔✔the role of Mg2+ in binding ATP to an enzyme
the Fe2+ on the heme interacts with oxygen - ✔✔The role of Fe2+ in myoglobin
Fe2+ acts as a redox center, and can be oxidized to Fe3+ - ✔✔the role of Fe2+ in the (2Fe-
2S) iron sulfur cluster
FADH can carry one or two electrons - ✔✔How many electrons can FAD carry?
SAM carries methionine - ✔✔What is the role of the cofactor S-adenosyl-methionine
in enzyme reactions
