Exam 21: Unifying Concepts of Animal Structure and Function

Which of the following is a function of the kidneys? I)elimination of urea II)reabsorption of valuable solutes III)reabsorbing water

Secretion is the movement of substances from the ________ to the ________.

Which of the following is a source of water loss in humans? I)urination II)defecation III)breathing

In animals,individual cells are grouped into ________.

Compare how temperature is regulated in a room with a thermostat with how thermoregulation works in the human body.What is most analogous to "Heating starts" (i.e.,heat is produced)for the human body?

Excretion is the movement of substances from the ________ to the ________.

Use the following information to answer the following questions. The dune-burrowing spider Seothyra species lives in the Namib Desert on the southwestern coast of Africa. These spiders build silk-lined burrows with a sticky silk mat at the entrance to trap insect prey. While foraging during the day, the spider remains concealed in its burrow and shielded from direct sunlight when prey are not present. When insect prey become entangled in the sticky silk mat, the spider will run out of its burrow and capture the prey insects. During the day, environmental temperatures vary from 17 to 73°C (63-164°F). If a spider is forced to remain outside of its burrow, it shows signs of thermal stress at 49°C. When spiders are unrestrained, they spend more time waiting inside their burrows to keep their internal temperatures below 49°C, even when surface temperatures are above 65°C. In addition, spiders respond more quickly to prey stimuli during the hottest times of the day and capture prey in significantly less time when surface temperatures are above 49°C. The captured arthropods (prey) tend to succumb more quickly to hot surface temperatures; they are more lethargic and struggle less when captured at the high temperature ranges. -When spiders show signs of thermal stress,this is an indication that they are unable to ________.

Bone is a type of ________.

To study the effect of ambient (environmental) temperature on the metabolic rate of animals, a scientist takes a small animal and puts it in a sealed chamber with oxygen. The scientist measures the amount of oxygen used by the animal at different temperatures. The temperatures selected are those that the animal normally encounters in nature. The data from this experiment are in the table below. -The scientist studies a second animal whose oxygen consumption rises as temperature increases.The thermoregulatory strategy of the second animal is most likely to be ________.