The structure depicted the accompanying figure shows the _____
A) 1-4 linkage of the ?-glucose monomers of starch
B) 1-4 linkage of the ?-glucose monomers of cellulose
C) double-helical structure of a DNA molecule
D) ?-helix secondary structure of a polypeptide
E) ?-pleated sheet secondary structure of a polypeptide
Answer: D
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Indicate whether this statement is true or false.
Apical meristems in lateral buds can give rise
to all of these structures except
a. branches. b. leaves. c. flowers. d. lateral meristems. e. there is no exception--lateral bud apical meristems can give rise to all of these structures.
Which statement true about telomere characteristics?
A) they allow duplicated chromosomes to become separated into daughter cells during M phase B.) found in all living cells C.) they cap the ends of linear chromosomes and prevent them from being recognized by the cell as broken DNA in need of repair D.) they contain repeated nucleotide sequences that are required to replicate the ends of linear chromosomes E.) all are true about telomere characteristics F.) only B and D are true G.) only statements C and D are true
The alternative pathway for complement activation is initiated by
A) lipid-carbohydrate complexes and C3. B) C5-C9. C) antigen-antibody reactions. D) factors released from phagocytes. E) factors released from damaged tissues.