An individual with a protein deficiency typically experiences increased susceptibility to illnesses, muscle and joint pain, and difficulty concentrating. why does a protein deficiency cause such diverse symptoms? a. because immune, nervous, and muscle system cells require proteins for structure and regulation b. because the only role of proteins is to provide the enzymes that all cells need to function c. because the membranes of immune, muscle, and nervous system cells consist entirely of proteins d. because proteins are the primary source of energy for many different cell types

If assuming tasting ptc as a simple gene trait,what other genotype would you select to put in this missing genotype box that could result in this phenotype

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.

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km