LS 7C Midterm 1 EXAM QUESTION AND
VERIFIED CORRECT ANSWERS
GRADED A+ [LATEST UPDATE] 100%
GUARANTEED PASS
cAMP and PKA - CORRECT ANSWER-cAMP can activate an enzyme called protein kinase A (PKA),
enabling it to phosphorylate its targets and pass along the signal. Protein kinase A is found in a
variety of types of cells, and it has different target proteins in each. This allows the same cAMP
second messenger to produce different responses in different contexts.
phosphatase - CORRECT ANSWER-dephosphorylates (takes off phosphate group)
second messenger - CORRECT ANSWER-a substance whose release within a cell is promoted by
a hormone and that brings about a response by the cell
Long term cellular response - CORRECT ANSWER-(ex) receptor kinase
Changes in gene expression, influences how cells grow, divide etc..
Microtubule - CORRECT ANSWER-Hollow tube formed of tubulin dimers
Help maintain cell shape and structure
Make up spindles that attach to chromosomes during cell division
Function as tracks in the cell for motor proteins to travel
, Motor proteins - CORRECT ANSWER-They convert chemical energy into mechanical work by the
hydrolysis of ATP.
Kinesin - CORRECT ANSWER-travels towards + end of microtubule (moving crago OUT of the
cell)
Dynein - CORRECT ANSWER-travels towards - end of microtubule (moves cargo INTO the cell )
Microfilaments - CORRECT ANSWER-Double helix of actin monomers
Found in cytoplasm of eukaryotic cells, Part of Cytoskeleton
Provide support for cell (flexible and strong), help with cell movement
Also have motor protein associated with them
Intermediate Filaments - CORRECT ANSWER-Polymers of proteins
Part of cytoskeleton
Provide mechanical strength to cell
Cadherins - CORRECT ANSWER-Type of cell adhesion molecule (CAM) that is important in the
formation junctions to bind cells with each other (ex) adherens, desmosome
Integrins - CORRECT ANSWER-Bind cells to extracellular matrix
Tight junction - CORRECT ANSWER-Prevent movement of substances through space between
cells. Attaches to micro filaments (not cytoskeleton).
Adherens junction - CORRECT ANSWER-Cell to cell adhesion (epithelial tissue)
VERIFIED CORRECT ANSWERS
GRADED A+ [LATEST UPDATE] 100%
GUARANTEED PASS
cAMP and PKA - CORRECT ANSWER-cAMP can activate an enzyme called protein kinase A (PKA),
enabling it to phosphorylate its targets and pass along the signal. Protein kinase A is found in a
variety of types of cells, and it has different target proteins in each. This allows the same cAMP
second messenger to produce different responses in different contexts.
phosphatase - CORRECT ANSWER-dephosphorylates (takes off phosphate group)
second messenger - CORRECT ANSWER-a substance whose release within a cell is promoted by
a hormone and that brings about a response by the cell
Long term cellular response - CORRECT ANSWER-(ex) receptor kinase
Changes in gene expression, influences how cells grow, divide etc..
Microtubule - CORRECT ANSWER-Hollow tube formed of tubulin dimers
Help maintain cell shape and structure
Make up spindles that attach to chromosomes during cell division
Function as tracks in the cell for motor proteins to travel
, Motor proteins - CORRECT ANSWER-They convert chemical energy into mechanical work by the
hydrolysis of ATP.
Kinesin - CORRECT ANSWER-travels towards + end of microtubule (moving crago OUT of the
cell)
Dynein - CORRECT ANSWER-travels towards - end of microtubule (moves cargo INTO the cell )
Microfilaments - CORRECT ANSWER-Double helix of actin monomers
Found in cytoplasm of eukaryotic cells, Part of Cytoskeleton
Provide support for cell (flexible and strong), help with cell movement
Also have motor protein associated with them
Intermediate Filaments - CORRECT ANSWER-Polymers of proteins
Part of cytoskeleton
Provide mechanical strength to cell
Cadherins - CORRECT ANSWER-Type of cell adhesion molecule (CAM) that is important in the
formation junctions to bind cells with each other (ex) adherens, desmosome
Integrins - CORRECT ANSWER-Bind cells to extracellular matrix
Tight junction - CORRECT ANSWER-Prevent movement of substances through space between
cells. Attaches to micro filaments (not cytoskeleton).
Adherens junction - CORRECT ANSWER-Cell to cell adhesion (epithelial tissue)
