What structure is found in all members of the superkingdom Stramenopila?
A. a chloroplast
B. a second, smooth flagellum
C. a flagellum with stiff hairs
D. a cell wall
E. None of the answers options is correct..
C
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One important advantage of eukaryotic cells as hosts for cloning vectors is that they already possess the complex RNA and posttranslational processing systems required for the production of eukaryotic proteins
Indicate whether the statement is true or false.
The development of wings on a fly, a moth, and a bird are ____ because they developed independently as adaptations to perform the common function of flying
A. homologous B. related C. analogous D. identical
In the United States, what fraction of fresh
water taken from the environment is used to irrigate agricultural fields? a. 0. b. 20. c. 40. d. 60. e. 80
Which of the following describes the composition of a nucleotide?
a. a five-carbon sugar, a phosphate group, and one of four amino acids b. a five-carbon sugar, a nitrogenous base, and one of twenty amino acids c. a five-carbon sugar, a phosphate group, and one of four nitrogenous bases d. a six-carbon sugar, a phosphate group, and one of twenty amino acids