Which statement about reporters is false? A. Lab-worthy GFP emits a green fluorescence when it binds and cleaves its substrate when illuminated with UV light.

B. Luciferase enzymes use luciferin substrates to yield a light (photon) signal; they are often used to measure promoter activity.

C. Beta-galactosidase is an enzyme encoded by the lacZ gene and cleaves galactosides like ONPG and X-gal to yield yellow and blue colors, respectively.

D. Alkaline phosphatase is an enzyme encoded by the phoA gene that cleaves ONPP to yield a yellow color and XP to yield blue.

Select the correct answer. in the image, if the washcloth represents consumed food, which organ of the digestive system correctly represents the action performed by the hands? hands squeezing water from a washcloth a. esophagus b. large intestine c. liver d. mouth

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.

Oak and maple trees, chipmunks, white-tail deer, and black bears emerging from hibernation are all organisms that may be found in which biome