Which statement about biological clocks is FALSE?
a. They are limited to vertebrates.
b. They are regulated by clock proteins that act both within and outside the nervous system.
c. They have complex feedback loops.
d. They are controlled by genes.
e. They are capable of sustaining biological rhythms independently of environmental cues.
a
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Which of the following statements about the concept of an ecological footprint is false?
A. Countries with the largest population sizes have the largest ecological footprints. B. It is an estimate of how much land is required to provide the resources used by an individual. C. The total ecological footprint for humanity is greater than the actual surface area of Earth. D. It encompasses the energy used to produce goods AND the energy used to ship those goods to a store. E. Undeveloped countries have smaller ecological footprints than developed countries.
Which of the following result from sperm penetration? (Check all that apply.)
_____ eggs complete meiosis _____ haploid nucleus of egg undergoes final mitotic division _____ movement of egg cytoplasm _____ outer pigmented cap of egg cytoplasm rotates toward point of entry _____ sharp increase in protein synthesis
Which of the following is a behavioral pattern that results from a proximate cause?
A) A male sheep fights with another male to improve its social position and find a mate. B) A female bird lays its eggs when day length begins to shorten. C) A cat kills a mouse to obtain food. D) A cockroach runs into a crack in the wall and avoids being stepped on. E) A goose squats and freezes motionless to escape a predator
Why would an EMT give fluid to a hemorrhage patient fluid instead of blood, if the fluid has no red blood cells?
A. The fluid is infused with large amounts of oxygen first. B. The fluid contains artificial hemoglobin. C. The fluid prevents dangerous air bubbles from forming in the blood vessels. D. The fluid restores blood pressure, so that the remaining blood can deliver oxygen and nutrients.