In smooth muscle, bundles of filaments attach to the plasma membrane at points referred to as __________
Fill in the blank with correct words.
Answer: Adhesion plaques
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Phospholipids are able to form bilayer membranes in aqueous environments because
a. they have hydrophobic heads and hydrophilic tails. b. they have polar heads and nonpolar tails. c. they have polar tails and nonpolar heads. d. the phospho-portion can form phosphodiester bonds between adjacent phospholipids. e. two of these.
In the final step of enzymatic catalysis,
A. the product is completed and the enzyme is inactivated. B. equilibrium is obtained so that the enzyme does not catalyze further reactions. C. the substrate is released and the enzyme is inactivated. D. the enzyme and substrate form chemical bonds with each other resulting in a new product. E. the products are released and the enzyme is free to bind other substrates.
With ____________________, one hormone must be present in adequate amounts for the full exertion of another hormone's effect
Fill in the blank(s) with correct word
All body cells have motile cilia with a "9+2" structure.
Answer the following statement true (T) or false (F)