Which of the following statements is true?

Sound vibrations are changed into electrical impulses by the eardrum.

It is dangerous to listen to sounds over 160 dBs.

High-pitched sounds have low frequencies.

All of the above.

Which group in subphylum vertebrata is most closely related to class amphibia?

Kalie, age 18, is prescribed progesterone for the treatment of primary amenorrhea. which adverse effect would need to be reported immediately to the health care provider?

Which of the following would disappear first in an estuary was destroyed? A) Shellfish B) Whales C) Coral Reefs D) Algae

How do cells in different parts of the embryo become different kinds of specialized cells which eventually become organs, then organ systems?

During one year, two rabbits were born into a population and five emigrated to look for better food sources. Seven rabbits died in the population and 12 immigrated into the population.

Regarding regulation of the ara operon, what would be the effect of a mutation that removes the part of the AraC protein that binds to RNA Polymerase? a. Transcription would not occur at high levels in either the presence or absence of arabinose. b.

Cnidaria and flatworms exchange gases and remove wastes by way of their: A) open circulatory systems. B) closed circulatory systems. C) gastrovascular cavities. D) moist skin surfaces. E) respiratory and excretory systems.

Immunofluorescence microscopy A. Can be used to map the location of specific macromolecules in cells. B. Can be performed with a standard light microscope. C. Can yield resolution approaching that of the electron microscope. D.

Which statements describe functions of antibodies? Check all that apply. They maintain the cell's shape. They regulate cell processes. They protect the body from infectious agents. They signal the immune system to destroy pathogens.

Which event results in massive flooding? a landslide an earthquake a tornado a tsunami