The force of the original vibrations entering the ear is amplified by the
a. organ of Corti.
b. oval window.
c. round window.
d. Eustachian tube.
e. semicircular canals.
B
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Unlike most other animals, sponges lack which of the following?
a. a digestive tract only b. a symmetrical body plan only c. tissues only d. a digestive tract and a symmetrical body plan only e. a digestive tract, a symmetrical body plan, and tissues
What are the fuctions of the pancrease
What will be an ideal response?
The nucleocapsid consists of
A. the envelope and capsid. B. the envelope, nucleic acid, and capsid. C. the nucleic acid of the virus only. D. the capsomers assembled into the capsid. E. the nucleic acid along with the capsid.
The presence of DNA is important for cellular metabolic activities because DNA
a. directs the production enzymes b. is a structural component of cell membrane c. directly increases the solubility of nutrients d. is a major component of the cytoplasm