The ________ system of blood proteins act to lyse foreign cells.
Fill in the blank(s) with the appropriate word(s).
complement
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What is the role of the large ribosomal subunits?
a. Binding to the mRNA b. Reading the mRNA c. Joining together amino acids to form a polypeptide chain d. Folding the amino acids into proteins
The cell walls of fungi are composed mainly of
a. hyphae. b. cellulose. c. chitin. d. phospholipids. e. mycelia.
Simple sugars are linked together to form polysaccharides by
1.hydrolysis reactions. 2.condensation reactions. 3.ionic bonds. 4.hydroxyl groups.
The cell membrane can be described most accurately as
A) permeable to all small molecules and ions. B) impermeable to larger molecules independent of their chemical characteristics. C) permeable to some molecules and impermeable to others. D) impermeable to all polar molecules. E) permeable to all molecules except water.