Which of these epithelial types is correctly matched with its major function?
A) simple squamous epithelium — diffusion or filtration
B) stratified squamous epithelium — protection from abrasion
C) Simple cuboidal epithelium — active transport, facilitated diffusion, or secretion
D) Simple columnar epithelium — secretion or absorption
E) All these are correctly paired.
Ans: E) All these are correctly paired.
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The head of the femur and all of the acetabulum are completely covered with articulating cartilage.
Answer the following statement true (T) or false (F)
Amoeboid movement is accomplished by transitions of the cytosol between a gel and a sol state as a result of alternate assembly and disassembly respectively of actin filaments
Indicate whether the statement is true or false
The main components of the plasma membrane are
A. lipids and ions. B. ions, lipids, and proteins. C. proteins, lipids, and carbohydrates. D. carbohydrates, ions, and lipids. E. proteins and carbohydrates.
Most transmembrane proteins have ________ regions facing the intra- and extracellular fluid, and ________ regions embedded in the phospholipid bilayer
A) hydrophobic; hydrophilic B) lipophilic; lipophobic C) hydrophilic; hydrophilic D) hydrophobic; hydrophobic E) hydrophilic; hydrophobic