BIO 219 Exam 1 Questions With Complete
Solutions
Which of the following is not a component of the cytoskeleton?
A) intermediate filaments
B) macrofilaments
C) microfilaments
D) microtubules B) macrofilaments
True or False? The cytoskeleton can rapidly change shape in response to movement. T...
Which of the following is not a component of the cytoskeleton?
A) intermediate filaments
B) macrofilaments
C) microfilaments
D) microtubules B) macrofilaments
True or False? The cytoskeleton can rapidly change shape in response to movement. True
Which of the following describes signals sent from nearby cells?
A) endocrine signaling
B) paracrine signaling
C) autocrine signaling B) paracrine signaling
Which of the following is NOT a part of receptors?
A) extracellular domain
B) transmembrane domain
, BIO 219 Exam 1 Questions With Complete
Solutions
C) nuclear domain
D) intracellular domain C) nuclear domain
Which of the following could be a ligand for a receptor?
A) proteins/peptides
B) steroids/ hormones
C) lipids
D) gases
E) all of the above E) all of the above
True or False? The extracellular matrix is mostly empty, with few proteins. False
Which of the following uses transmembrane proteins from cells to glue cells together to make
tissues?
A) adhesive junctions
B) tight junctions
C) gap junctions
D) conjunction junctions A) adhesive junctions
, BIO 219 Exam 1 Questions With Complete
Solutions
Cells that can crawl depend on the ability to move proteins from the back of the cell to the front
of the cell using microtubules as tracks. Which of the following is NOT true of microtubules?
A) microtubules grow equally well at the end + and - ends.
B) microtubules are made from protein dimers.
C) the interaction of microtubule subunits is a quaternary structure.
D) the microtubules are larger than microfilaments and intermediate filaments. A)
microtubules grow equally well at the + end and - ends.
Microtubule subunits must bind to which of the following to grow and be stable?
A) ATP
B) ADP
C) GTP
D) GDP C) GTP
The different cytoskeletal proteins are defined by their subunits and characteristics. Which of the
following cytoskeletal components does NOT have inherent polarity?
A) microfilaments
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