The structure shown in Figure 31-3 is from an animal in phylum:
A. Cestoda.
B. Turbellaria.
C. Trematoda.
D. Monogenea.
E. Platyhelminthes
E
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One way in which organisms may exhibit resistance to a drug is the ability to pump the drug out of the cell immediately after it has entered.
Answer the following statement true (T) or false (F)
Which of the following correctly describes the reproduction of males in Daphnia?
A) Daphnia males are produced asexually from unfertilized eggs. B) Daphnia males are produced sexually through fertilization of eggs but are sterile from birth. C) Daphnia males are produced from a pseudo-sexual union of two eggs. D) Daphnia males are produced asexually but are sterile from birth.
Pheromones activate what receptor type?
1.chemoreceptors 2.thermoreceptors 3.mechanoreceptors 4.photoreceptors
The following is a representation of a metabolic pathway that involves genes for enzymes A, B, C, and D: A ? B ? C ? D ? product A mutation in the B gene would result in an accumulation of which gene product?
What will be an ideal response?