Which statement about saturated fatty acids is false?
A) They have a higher melting point than unsaturated fatty acids.
B) They form straight, instead of bent, chains.
C) No carbon-carbon double bonds are present in the hydrocarbon chain.
D) The hydrocarbon chain always includes an odd number of subunits.
E) They consist of a polar, hydrophilic "head" and a nonpolar, hydrophobic "tail."
D) The hydrocarbon chain always includes an odd number of subunits
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Which members of Platyhelminthes are parasitic?
a. Planarians and cnidarians b. Flukes and planarians c. Flukes and cnidarians d. Planarians and tapeworms e. Flukes and tapeworms
Which chromosomal arrangements are assured by the gametes that are produced by independent assortment?
a. chromosomes containing genes from the paternal and maternal chromosomes b. some paternal chromosomes and some maternal chromosomes c. only maternal chromosomes d. only paternal chromosomes
Choose the one most appropriate response for each.
A. dense, regular connective tissue B. loose connective tissue C. neuron D. adipose tissue E. epidermis F. exocrine gland G. blood H. interstitial fluid
A cell containing 98% water in its cytoplasm is placed in a 2% salt solution. It should
a. lose water b. gain water c. neither lose nor gain water d. gain salt because of the high rate of diffusion