Plasma membranes are extremely thin and fragile, requiring an extensive support network of fibrous proteins. This network is called the ____________
(a) cortex.
(b) attachment complex.
(c) cytoskeleton.
(d) spectrin.
(a)
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Which of the following numbered events represents the correct sequence of events of prokaryotic
translation initiation? 1) large ribosomal subunit binds to initiation complex 2) initiation tRNA binds small ribosomal subunit 3) initiation complex binds to ribosome recognition sequence on mRNA a. 1 ? 2 ? 3 b. 1 ? 3 ? 2 c. 2 ? 1 ? 3 d. 2 ? 3 ? 1 e. 3 ? 2 ? 1
The type of movement of molecules that is specific and passive, and which becomes saturated if all of the protein carriers are in use is
A. osmosis. B. exocytosis. C. endocytosis. D. active transport. E. facilitated diffusion.
________ lakes are nutrient-rich and tend to have large populations of algae.
A. Eutrophic B. Temperate C. Stratified D. Oligotrophic
Structures that are anatomically similar because ther are inherited from a common ancestor are called a(n) ____ structure.
Fill in the blank(s) with the appropriate word(s)