Question: Which of the following is an experimental observation that demonstrates that spermatophore production involves a trade-off for male crickets?

Answer: Simulating bacterial infection in males led to smaller gelatinous masses, so females would eat the masses more quickly and receive fewer sperm.

Question: How is the time frame of adaptation different from acclimatization?

Answer: Adaptation occurs over years to eons, while acclimatization occurs with a change in season.

Question: To move your arm, which tissue types would be directly required?

Answer: Skeletal muscle, dense connective tissue, supporting connective tissue

Question: Which tissue type in your body typically shows regeneration?

Answer: Epithelial tissues

Question: If a mouse has a mass-specific metabolic rate that is 10 times higher than an elephant, what does that tell you about food needs of a mouse?

Answer: Relative to body mass, mice will eat much more food per day.

Question: Why do salmon rely increasingly on gills for respiration as they get larger?

Answer: Gills are needed to compensate for increasing size in fishes.

Question: Why are small aquatic organisms usually temperature conformers?

Answer: They have a high ratio of surface area to volume and therefore readily lose heat.

Question: In response to a body temperature above the set point, two effector responses in mammals could be _______ and _______.

Answer: dilation of blood vessels in the skin; activation of sweat glands

Question: For mammals living in cold habitats, would smaller or larger species require relatively thicker fur?

Answer: Smaller mammals

Question: Which two terms apply to most mammals?

Answer: Endotherm and homeotherm