Figure 40.2
In the above illustration of fluid regulation in a planarian, the letter "A" represents which of the following?
A. Nucleus of the flame cell
B. Small capillaries that allow water to freely diffuse into the planarian
C. Sexual reproductive organ
D. Cilia to draw fluid into the planarian
E. Funnel to collect fluid
Answer: A
You might also like to view...
Which of the following sequence of events of fertilization is in the proper order?
A. acrosomal reaction, binding of sperm to egg membrane, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy B. binding of sperm to egg membrane, acrosomal reaction, fast block to polyspermy, slow block to polyspermy, and then an increase in egg cytosolic calcium C. binding of sperm to egg membrane, acrosomal reaction, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy D. acrosomal reaction, fast block to polyspermy, binding of sperm to egg membrane, increase in egg cytosolic calcium, and then the slow block to polyspermy E. acrosomal reaction, fast block to polyspermy, binding of sperm to egg membrane, slow block to polyspermy, and then an increase in egg cytosolic calcium
Transcription of the lac operon is most efficient when ____
a. cAMP levels are low b. the CAP site of the promoter is not bound to cAMP c. glucose is present and lactose is absent d. lactose is present and glucose is absent e. lactose and glucose are present
The area in which there is a spark discharge in the accompanying figure represents ____
a. sunlight energy in the environment. b. heat energy in the environment. c. electrical energy in the environment. d. ionizing radiation in the environment. e. the explosion of the hydrogen gas to release energy for the reactions.
Describe how yeast differs from bacteria, and describe the roles of yeast in at least two important biotechnology applications
What will be an ideal response?