In 2007, as part of an on-air radio contest, a woman entered a waterdrinking contest to

Which is likely to be a more common cancer in an adult: cancer of the epithelial tissue lining the inside of the throat or cancer of the smooth muscle of the intestines? Why?

How might an animals body shape indicate whether it has a circulatory system?

Which of the following best illustrates homeostasis? a. Most adult human beings are between 5 and 6 feet tall. b. The lungs and intestines have large surface areas for exchange. c. When the concentration of water in the blood goes up, the kidneys expel more water. d. When oxygen in the blood decreases, you may feel light-headed.

The __________, respiratory, and __________ are the three organ systems that directly exchange materials with the external environment.

State whether each statement below is an example of positive or negative feedback and why. a. Stimulation of a nerve cell causes sodium ions to leak into the cell, and the sodium influx triggers the inward leaking of even more sodium. b. An increase in the concentration of glucose in the blood stimulates the pancreas to secrete insulin, a hormone that lowers blood glucose concentrations.

While visiting a farm on a hot summer day, you see pigs rolling in mud. Based on what you know about thermoregulation, why are the pigs rolling in mud?

What is normally found in urine? What are three conditions that can be tested for with a urinalysis?

Drinking alcohol makes you urinate more frequently because a. alcohol inhibits the release of ADH, a hormone that increases water reabsorption in the kidneys. b. alcohol inhibits the release of ADH, a hormone that decreases water reabsorption in the kidneys. c. alcohol causes more water to filter from the blood into the kidneys.

What happens to most of the water that passes from the blood into the kidneys by filtration? What happens to the rest of it?

Explain the similarities between how your body temperature is maintained and how a thermostat regulates temperature in a home.

When a pet mouse shivers in a cold room, is this a behavioral, physiological, or anatomical adaptation in response to cold? How about when the mouse huddles with other mice?

nterpreting Data Using the data in the graph below, write a conclusion about the thermoregulation of river otters and largemouth bass.

Eastern tent caterpillars (Malacosoma americanum) live in sizable groups in silk nests, or tents, typically in cherry and apple trees. They emerge early in the spring, when daily temperatures fluctuate from freezing to hot. Early in the morning, these black caterpillars rest in a tightly packed group on the east-facing surface of the tent. In midafternoon, the group is found on the tent undersurface, each caterpillar hanging from the tent by a few of its legs. Propose a hypothesis to explain this behavior. How could you test it?

As you read in the Biology and Society section, the state of Georgia now has some rules in place to protect high school athletes from heat illness. What similar policies, if any, exist in your state? Heat illness is much more common in football players than in other athletes; what do you think contributes to this? Make a pamphlet that you could give to high school football players educating them about the dangers of heat illness and ways to prevent it.

In 2007, as part of an on-air radio contest, a woman entered a waterdrinking contest to win her three children a gaming system. The goal was to drink more water than anyone else without urinating; she drank 6 liters of water in 3 hours. Afterwards, she vomited and began to suffer a terrible headache. She left the radio station ill and died at home a few hours later. During the contest, a person called the radio station to warn that the competition could be deadly. Pretend you are a journalist doing a story about the womans death and that you are interviewing different experts, asking questions like the following: Did water kill the woman? Is the radio station at fault for what she did willingly? Write your questions and responses as a mock script or make a podcast.