The figure illustrates the relationship between the distance to a food source and a portion of the honeybee dance in the hive. If a forager returned to the hive with food and did a straight run of 1.5 seconds, how far would other foragers go to find food?
a. 500 meters c. 2,000 meters
b. 1,000 meters d. 4,000 meters
B
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Which of the following describes the correct path of air through a bird's respiratory system?
A. trachea, posterior air sacs, lungs, anterior air sacs, trachea B. trachea, anterior air sacs, lungs, posterior air sacs, trachea C. trachea, lungs, anterior air sacs, posterior air sacs, trachea D. trachea, lungs, posterior air sacs, anterior air sacs, trachea E. trachea, anterior air sacs, posterior air sacs, lungs, trachea
Sickle cell anemia is a genetic disease caused by the replacement of one amino acid in the hemoglobin
molecule. This replacement changes the shape and function of the hemoglobin protein in dramatic ways, which can sometimes be lethal. How can the substitution of one amino acid lead to such drastic results?What will be an ideal response?
Which of the following is the typical start codon in most mRNA molecules?
A) UGA B) AUG C) AAA D) GAA E) CAG
Over time, the movement of people on Earth has steadily increased. This has altered the course of human evolution by increasing _____
A) nonrandom mating B) geographic isolation C) genetic drift D) gene flow