The sporophyte is the dominant and conspicuous generation in
(a) the fern allies and ferns.
(b) gymnosperms.
(c) flowering plants.
(d) all of the above.
(d) all of the above.
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Which one of the following cellular compartments does not have a double membrane structure separating it from the rest of the cell? Select all correct choices
A. chloroplasts B. lysosomes C. the nucleus D. mitochondria
The chemoreceptors called papillae are ________
a. ciliated endings of olfactory receptors b. touch receptors located on the skin c. taste buds on the tongue d. specialized for detecting pheromones
Which of the following is NOT a concept or term related to the flow of energy through living systems?
a. cellular respiration b. consumers c. decomposers d. photosynthesis e. sexual reproduction
The result of binding a signal molecule to its receptor is
A) production of a protein by the target cell, followed by cell death. B) cell division. C) signal transduction.