Your undergraduate colleague accidentally mislabels tissue samples taken from different parts of a rat. in order to correct his mistake, you make slides from each sample and stain all tissue red and all nuclei blue. upon analyzing one slide under a compound light microscope, you see many small reddish pink dots but no blue. this slide must be a sample of tissue from the rat's select one: a. lungs b. thymus c. liver d. blood e. striated muscle

How much time has elapsed from the very beginning of "the memior of the conquistador bernal diaz del castillo" to the end? a. castillo's whole life b. a quarter of an hour c. a few weeks d. a decade

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.

Draw a simple labelled diagram if a collenchyma tissue