Photophores are cells found in bioluminescent organisms that may contain bioluminescent bacteria and the pigment luciferin. photophores are cells found in bioluminescent organisms that may contain bioluminescent bacteria and the pigment luciferin.

a. true

b. false

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Which statements best describe monsoons? check all that apply. they force cool, moist air from oceans to rise. they are winds that blow in the opposite direction of a normal wind. they bring rain in the summer and drought in the winter they increase rainfall in south asia, africa, and australia. they influence precipitation as wind moves near a mountain.