In the axoneme, sidearms
A) are incomplete microtubules.
B) slide microtubules past one another.
C) project inward at each doublet.
D) link adjacent doublets.
E) are complete microtubules.
B) slide microtubules past one another.
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Why is only one strand of DNA transcribed into mRNA?
a. Because mRNA is only required in small quantities b. Because transcribing both DNA strands would produce different amino acid sequences c. Because the other strand would produce the same amino acid sequence in reverse order d. Because all genes are located on the same DNA strand, while the other strand acts as protection e. Because the other strand is transcribed directly into amino acids
Mycorrhizae are symbiotic associations between
A) plant roots and a fungus. B) fungi and plant stems. C) animals and fungi. D) algae and fungi. E) algae and plant roots.
Which of the following statements about transport through phloem is true?
A. Mostly dissolved starch is transported. B. It is aided by root pressure. C. Transport only occurs from the roots to the shoot. D. The direction of flow can change at different times if the sources and sinks change. E. No energy is required.
The term used to describe bacteria that are intermediate in shape between spherical and rod-shaped is ________.
A. bacilli B. vibrio C. coccobacilli D. cocci