Cilia and microvilli contain a similar number of parallel actin filaments
a. true
b. false
Answer: b. false
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Describe the route of water through a sponge.
A. enters through pores into the spongocoel and exits via the osculum. B. enters through the osculum into the spongocoel and exits via pores. C. enters through the spongocoel into the osculum and exits via pores. D. enters through the pores into the osculum and exits via the spongocoel. E. enters through the osculum into the mesohyl and exits via the spongocoel.
Synthetic compounds similar to ____ are used to prolong the shelf life of vegetables such as lettuces and mushrooms
and to keep cut flowers fresh.
a. salicylic acid b. jasmonates
c. abscisic acid d. gibberellins e. cytokinins
Which offspring in the illustration below are
homozygous recessive for both traits? a. A b. B c. C d. D e. none of these
Which of the following is the function of bacteria found in human guts?
a. to synthesize vitamin A b. to synthesize vitamin C c. to synthesize vitamin K d. to synthesize vitamin B