BIOS 251 WEEK 3 EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE 2025

BIOS 251 WEEK 3 EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE 2025 Tight junctions can be found in the urinary bladder. True False - Answers True Adherens junctions are composed of a protein plaque, microfilaments and transmembrane proteins. True False - Answers True Like the adherens junctions, desmosomes rely on microfilaments for stability. True False - Answers False Hemidesomsomes add resistance to frictional forces. True False - Answers True Connexons allow ions and electric impulses to travel from one cell to another. True False - Answers True Gap junctions are found in some muscle tissues, but not nervous tissue. True False - Answers False All of the following can pass through connexons except: Electrical impulses Ions Small signal molecules The endoplasmic reticulum - Answers 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 - Answers tight junctions Which of the following bind cells to the basement membrane? tight junctions gap junctions adherens junctions hemidesmosomes - Answers hemidesmosomes Which of the following junctions allows for communication between cells? tight junctions gap junctions adherens junctions hemidesmosomes - Answers 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 - Answers 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 - Answers epithelial tissue If you wanted to design a tissue that restricted the movement of water and other molecules between adjacent cells, which type of junction would you use to connect the cells? tight junctions gap junctions desmosomes hemidesmosomes adherens junctions - Answers tight junctions Which type of muscle tissue would have these characteristics: branched cells, usually has one nucleus, has striations (a striped appearance)? skeletal cardiac smooth - Answers cardiac