Honeybees live in social groups consisting of a queen, up to several hundred male drones, and thousands of infertile female workers. The drones mate with the queen only, and the workers protect the hive, forage, and feed and groom the queen. The health of the hive depends on the female workers performing these duties instead of reproducing. What roles do pheromones play in maintaining a functional beehive?In the experiment described in Question 14, the researchers dissolved the queen pheromone in diethyl ether, a chemical that helps volatilize the pheromone, making it easier for the workers to detect it in the air. The control treatment consisted of plain diethyl ether. Why did they use this as the control, instead of simply not exposing the workers to any chemical?

Have you ever felt your ears ringing after listening to loud music? Can this permanently impair your hearing? Should manufacturers of music devices and producers of concerts be required to warn consumers? What effect might warnings have?

Honeybees live in social groups consisting of a queen, up to several hundred male drones, and thousands of infertile female workers. The drones mate with the queen only, and the workers protect the hive, forage, and feed and groom the queen. The health of the hive depends on the female workers performing these duties instead of reproducing. What roles do pheromones play in maintaining a functional beehive?Honeybees produce an alarm pheromone when their hive is molested. This pheromone stimulates the bees to protect the hive. If you were to count the number of alarm pheromone receptors in honeybee tissues, which type of bee would likely have the most—a queen, a drone, or a worker? Why?

Honeybees live in social groups consisting of a queen, up to several hundred male drones, and thousands of infertile female workers. The drones mate with the queen only, and the workers protect the hive, forage, and feed and groom the queen. The health of the hive depends on the female workers performing these duties instead of reproducing. What roles do pheromones play in maintaining a functional beehive?Why might an alarm pheromone be more effective for triggering a protective response in a hive than signals that involve other senses, such as vision or hearing?

Honeybees live in social groups consisting of a queen, up to several hundred male drones, and thousands of infertile female workers. The drones mate with the queen only, and the workers protect the hive, forage, and feed and groom the queen. The health of the hive depends on the female workers performing these duties instead of reproducing. What roles do pheromones play in maintaining a functional beehive?Researchers observed that the queen produces a pheromone that attracts both drones and workers. They hypothesized that this pheromone inhibits ovarian development in the workers, making the workers infertile. To test this hypothesis, they exposed workers to a synthetic version of the queen pheromone and then recorded their 'ovary development score.' (Higher scores indicate more fully developed ovaries.) The results are shown in the graph here. Do these results support the researchers' hypothesis? Why or why not? (*** signifies P<0.001.)

Honeybees live in social groups consisting of a queen, up to several hundred male drones, and thousands of infertile female workers. The drones mate with the queen only, and the workers protect the hive, forage, and feed and groom the queen. The health of the hive depends on the female workers performing these duties instead of reproducing. What roles do pheromones play in maintaining a functional beehive?Beekeepers carefully manage their beehives by adding mated queens, drones, and workers at appropriate times. However, sometimes the bees abandon a new hive before the queen can mature, and the result is inefficient hive management and honey production. Suggest a potential use of queen pheromone in controlling this problem.

Although we often assume that our sense organs are reporting a complete picture of the world to our brains, in fact the world is full of stimuli (very low frequency sound, cosmic rays, electrical fields, etc.) that our sense organs cannot detect. This situation is best characterized as a failure of our sense organs to do what to these stimuli?

You look all over for your glasses and then find them pushed back onto your forehead. This error could be attributed to __________.

A fish detects vibrations in the water around it by means of its lateral lines, rows of sensory receptors along each side of the body. Based on what you know about sensory receptors, the lateral line receptors are probably which of the following?