Ascientist discovers a cell that has chloroplasts, cytoplasm, dna, and a cell membrane. which statement best describes how the cell could be classified? the cell is prokaryotic because it has dna. the cell is prokaryotic because it has cytoplasm. the cell is eukaryotic because it has a cell membrane. the cell is eukaryotic because it has chloroplasts.

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?

If you relate the doppler effect on sound to the color of light waves, a police car would be the color as it approaches and the color as it recedes away from the observer.