Which of the following characteristics is unique to chytrids compared to other groups of fungi?
A) flagellated spores
B) zoospores
C) autotrophic mode of nutrition
D) cell walls of cellulose
E) nucleotide sequences of several genes
Answer: A
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________ carbon atoms allow for the formation of ________, which are mirror images of each other.
Fill in the blank(s) with the appropriate word(s).
Scientists develop a chemical that binds to molecules that make quorum sensing possible, rendering those molecules non-functional. If this chemical is incorporated into a mouthwash, how would it affect the community of bacteria that cause dental plaque?
A. Their negative effects would be reduced because they will no longer be able to produce mucilage and stick to teeth. B. Their negative effects would be reduced because they will no longer be able to produce the acid that damages teeth. C. Their negative effects would be increased because it will cause them to produce mucilage, allowing them to stick to teeth. D. Their negative effects would be increased because it will cause them to produce the acid that damages teeth. E. It would have no effect because they will still be able to form a biofilm and secrete the acid that damages teeth.
A mechanism shared by both extracellular and intracellular digestion is
A. a slow speed of digestion. B. the ability to phagocytose food particles. C. the ability to consume both large and small food items. D. the presence of a digestive cavity.