You wish to determine which organs function to remove waste products from the hemolymph (blood) of an insect. You do so by injecting a suspension of particulate dye particles into the abdominal cavity of an anesthetized cricket. Where will you find these dye particles 45 minutes later, after you euthanize and dissect the cricket?
A. In the protonephridia
B. In the Malpighian tubules
C. In the nephridia
D. In the antennal glands
E. In the urinary bladder
F. In the nephrons of the kidneys
Answer: B
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The introduction of a small population onto an island that results in a limited gene pool for a population best describes
a. the Hardy-Weinberg law. b. genetic drift. c. the bottleneck effect. d. the founder effect. e. the effect of genetic isolation.
Eggs are moved through the oviduct by rhythmic muscle movements
Indicate whether the statement is true or false
A good cloning vector:
A. should have a gene or genes that allows for selection of transformed host cells. B. should not be able to be cut by more than one restriction enzyme. C. should be readily degraded in the host. D. should not be capable of replication. E. should be large.
Evaluate this statement: By the end of the first trimester, most growth in a fetus is in size, not complexity
What will be an ideal response?