________ are insoluble polymers of aromatic alcohols that primarily are found in woody tissues
Fill in the blank with correct word.
Answer: Lignins
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Answer the following statements true (T) or false (F)
1. The nervous system of a cnidarian consists of a central ganglion leading into a nerve net. 2. The two body forms of some Radiata is an example of alternation of generations. 3. A medusa and polyp have similar body plans. 4. All Platyhelminthes are parasitic. 5. The disease schistosomiasis is caused by a parasitic trematode.
Experimenters replaced the statoliths in a crayfish statocyst with iron filings and then held a magnet above the animal. Based on your knowledge of the function of statoliths, what would they observe?
A. The crayfish stayed upright. B. The crayfish lay on its side. C. The crayfish turned upside down. D. The crayfish attempted to escape by rapidly swimming backwards. E. None of these choices are correct.
Which is a structural feature shared by DNA, RNA, and proteins?
A) The order of monomers is important for function. B) Each sequence of monomers folds into a different three-dimensional shape. C) Each molecule is a polymer of four different nucleotides. D) Two strands of monomers are connected by hydrogen bonding.
A scientific name consists of which of the following? I. Family name II. Genus name III. Species name
A. I only B. II only C. III only D. I and II E. II and III