BIOS-251 Exam 2: 100 Must-Know Questions with Correct Answers | Ultimate Biology
Review Guide
- Acts as a "gate" that allows communication between two cells, allowing ions and other
molecules to pass between two cells
- Formed by ring-like connexons
- Found in cardiac and smooth muscle, embryonic tissue, lens, and cornea - CORRECT
ANSWER : Gap Junctions
- Anchoring junctions that prevent cells from being pulled apart
- Form very strong structural network, contributes to integrity of cytoskeleton of cell
- Resists twisting and stretching, provides strength and withstands mechanical stress. -
CORRECT ANSWER: Desmosomes
- Column-shaped cells arranged in multiple layers.
- Found in the conjunctiva, pharynx, anus, and male urethra. - CORRECT ANSWER :
Stratified Columnar Epithelium
- Densely packed, parallel collagen fibers
- Compressed fibroblast nuclei
- Elastic tissue forms wavy sheets in some locations
- Tendons attach muscles to bones and ligaments hold bones together - CORRECT
ANSWER : Dense Regular Connective Tissue
- Densely packed, randomly arranged, collagen fibers and few visible cells
- Withstands unpredictable stresses
, - Locations: deeper layer of skin; capsules around organs - CORRECT ANSWER : Dense
Irregular Connective Tissue
- Empty-looking cells with thin margins; nucleus pressed against cell membrane•Energy
storage, insulation, cushioning
- Subcutaneous fat and organ packing
- Brown fat of juveniles produces heat - CORRECT ANSWER : Adipose Connective Tissue
- Forms nearly impermeable barrier
- Found in epithelial regions where tissue is required to be "sealed off" from extracellular
fluid - CORRECT ANSWER : Tight Junctions
- Has striations
- Usually has a single nucleus
- Joined to another muscle cell at an intercalated disc
- Involuntary
- Found only in the heart - CORRECT ANSWER : Cardiac Muscle
- Hollow, cylindrical organelle that disposes of unnecessary and damaged proteins
- Contain enzymes that break down tagged, targeted proteins into short peptides and amino
acids - CORRECT ANSWER : Proteasomes
- Lacks striations
- Spindle-shaped cells
- Single nucleus
- Involuntary—no conscious control
- Found mainly in the walls of hollow organs - CORRECT ANSWER : Smooth Muscle
- Layer between epithelium and underlying connective tissue
- Composed of collagen, reticular proteins, glycoproteins, other protein-carbohydrate
complexes - CORRECT ANSWER : Basement Membrane
Review Guide
- Acts as a "gate" that allows communication between two cells, allowing ions and other
molecules to pass between two cells
- Formed by ring-like connexons
- Found in cardiac and smooth muscle, embryonic tissue, lens, and cornea - CORRECT
ANSWER : Gap Junctions
- Anchoring junctions that prevent cells from being pulled apart
- Form very strong structural network, contributes to integrity of cytoskeleton of cell
- Resists twisting and stretching, provides strength and withstands mechanical stress. -
CORRECT ANSWER: Desmosomes
- Column-shaped cells arranged in multiple layers.
- Found in the conjunctiva, pharynx, anus, and male urethra. - CORRECT ANSWER :
Stratified Columnar Epithelium
- Densely packed, parallel collagen fibers
- Compressed fibroblast nuclei
- Elastic tissue forms wavy sheets in some locations
- Tendons attach muscles to bones and ligaments hold bones together - CORRECT
ANSWER : Dense Regular Connective Tissue
- Densely packed, randomly arranged, collagen fibers and few visible cells
- Withstands unpredictable stresses
, - Locations: deeper layer of skin; capsules around organs - CORRECT ANSWER : Dense
Irregular Connective Tissue
- Empty-looking cells with thin margins; nucleus pressed against cell membrane•Energy
storage, insulation, cushioning
- Subcutaneous fat and organ packing
- Brown fat of juveniles produces heat - CORRECT ANSWER : Adipose Connective Tissue
- Forms nearly impermeable barrier
- Found in epithelial regions where tissue is required to be "sealed off" from extracellular
fluid - CORRECT ANSWER : Tight Junctions
- Has striations
- Usually has a single nucleus
- Joined to another muscle cell at an intercalated disc
- Involuntary
- Found only in the heart - CORRECT ANSWER : Cardiac Muscle
- Hollow, cylindrical organelle that disposes of unnecessary and damaged proteins
- Contain enzymes that break down tagged, targeted proteins into short peptides and amino
acids - CORRECT ANSWER : Proteasomes
- Lacks striations
- Spindle-shaped cells
- Single nucleus
- Involuntary—no conscious control
- Found mainly in the walls of hollow organs - CORRECT ANSWER : Smooth Muscle
- Layer between epithelium and underlying connective tissue
- Composed of collagen, reticular proteins, glycoproteins, other protein-carbohydrate
complexes - CORRECT ANSWER : Basement Membrane
