For a lady bug population at the end of summer, the food supply decreases to where only 2,000 lady bugs can be supported per acre. If there are 1,000 lady bugs in a one-acre field, the per capita rate of increase is 25%, and no immigration or emigration occur, how many individuals will be added in the next generation? Interpret whether G = rN(K – N)/K or G = rN is appropriate.
A. 1,000
B. 250
C. 1,250
D. 125
E. 0
D. 125
You might also like to view...
A pregnant woman had contact with her nephew who was just diagnosed with a rubella infection. Acute and convalescent samples were taken, which resulted in an acute titer of 1:16 and a con-valescent titer of 1:32 . Which one of the following comments explains the risk to the fetus?
a. The risk is low; a fourfold rise in titer is not present. b. The risk is high; more than a fourfold rise is present in titer. c. The risk is high because both titers are elevated. d. Rubella is not a congenital disease; there-fore the test should not have been ordered.
In comparing all three major muscle types, which one of the following statements best describes the differences between them?
A) Cardiac muscle can be stimulated only by nerves, whereas smooth and skeletal muscle contract spontaneously. B) Smooth and skeletal muscles appear striated, due to the arrangement of muscle filaments, whereas cardiac muscles lack these filaments. C) Only cardiac muscle is under voluntary control. D) Smooth and cardiac muscle do not fatigue, whereas skeletal does fatigue. E) Gap junctions are present in skeletal muscles, but not in other types of muscle.
Why do chromosomes coil during mitosis?
A) to increase their potential energy B) to allow the chromosomes to move without becoming entangled and breaking C) to allow the chromosomes to fit within the nuclear envelope D) to allow the sister chromatids to remain attached E) to provide for the structure of the centromere
Ribosomal RNA:
A) is a double-stranded helix B) may act a ribozyme during protein synthesis C) retrieves amino acids and brings them to the ribosome for incorporation into a growing protein D) may have double stranded regions due to hairpin loop formations E) carries the genetic