Free 2019 Exploreretning
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Activity A (continued from previous page)
5. Observe: Click on the muscle fiber to see a close-up. Note that each muscle fiber consists of
a bundle of still smaller rod-like structures known as myofibrils, which are striated (banded).
A. What are the dark bands made of?

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area

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.