Exam (elaborations)
BIOS 251 WEEK 3 – Questions & Answers (Graded A+)
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BIOS 251 WEEK 3 – Questions & Answers (Graded A+)
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BIOS 251 WEEK 3 – Questions & Answers (Graded A+)Tight junctions can be found in the urinary bladder.
True
False Right Ans - True
Adherens junctions are composed of a protein plaque, microfilaments and
transmembrane proteins.
True
False Right Ans - True
Like the adherens junctions, desmosomes rely on microfilaments for stability.
True
False Right Ans - False
Hemidesomsomes add resistance to frictional forces.
True
False Right Ans - True
Connexons allow ions and electric impulses to travel from one cell to another.
True
False Right Ans - True
Gap junctions are found in some muscle tissues, but not nervous tissue.
True
False Right Ans - False
All of the following can pass through connexons except:
Electrical impulses
Ions
Small signal molecules
The endoplasmic reticulum Right Ans - The endoplasmic reticulum
, Which of the following protects cells from the movement of harmful
substances, like hydrochloric acid?
tight junctions
gap junctions
adherens junctions
hemidesmosomes Right Ans - tight junctions
Which of the following bind cells to the basement membrane?
tight junctions
gap junctions
adherens junctions
hemidesmosomes Right Ans - hemidesmosomes
Which of the following junctions allows for communication between cells?
tight junctions
gap junctions
adherens junctions
hemidesmosomes Right Ans - gap junctions
A group of cells that have a common origin and function together to perform a
specialized group of activities is called a(n) _______.
organ
organ system
tissue
organism
molecule Right Ans - tissue
This tissue covers body surfaces and lines hollow organs of the body such as
the stomach and bladder.
epithelial tissue
connective tissue
muscular tissue
nervous tissue Right Ans - epithelial tissue
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