The hypothalamus maintains homeostasis and regulates temperature control, water balance, and carbohydrate metabolism.
a. true
b. false
Answer: a. true
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The thin horizontal arrows in the figure above show that the _____
A) warmer arterial blood can bypass the legs as needed, when the legs are too cold to function well B) warmer venous blood transfers heat to the cooler arterial blood C) warmer arterial blood transfers heat to the cooler venous blood D) arterial blood is always cooler in the abdomen, compared to the temperature of the venous blood in the feet of the goose E) goose's legs get progressively warmer as the blood moves away from the abdomen towards the feet
Morphological characteristics are widely used for taxonomic classifications because they are ____
a. the most likely indicators of evolutionary relationships b. the most likely to represent reproductive isolation among groups c. easy to assess in living, preserved, or fossilized specimens
d. always the exact phenotypic expression of genotypes e. indicative of genetic relatedness
The total number of protons and neutrons in an atom can best be determined by
A) atomic mass. B) the subscript number following the chemical symbol. C) the atomic number. D) the charge of the atom. E) the chemical symbol.
Which of these is a method evolved by angiosperms to attract pollinators to their flowers?
A. colorful petals B. scent C. nectar D. All of these are correct.