Pitch is determined by 

A. frequency of the sound vibrations.
B. intensity of sound.
C. volume of sound.
D. duration of sound.


A. frequency of the sound vibrations.

Biology & Microbiology

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The distinction between karyogamy and plasmogamy is:

A. Karyogamy is the fusion of nuclei and plasmogamy is the fusion of the cytoplasm. B. Karyogamy is the fusion of cytoplasm and plasmogamy is the fusion of nuclei. C. Karyogamy is the fusion of dikaryotic cells and plasmogamy is the fusion of gametes. D. Karyogamy is the fusion of hyphae and plasmogamy is the fusion of mycelia. E. Karyogamy is the fusion of nuclei and plasmogamy is the attack of blood plasma by fungal pathogens.

Biology & Microbiology

What is the primary function of the transverse tubules?

A. Conduct action potentials from the surface of the muscle fiber to internal regions near myofibrils. B. Act as a channel for Ca2+ ions during excitation-contraction coupling. C. Form cross-bridges between actin and myosin during muscle contraction. D. Attach troponin to tropomyosin. E. Attach muscle fibers to skeletal elements to exert force.

Biology & Microbiology

Exchange across a membrane requires

a. moisture only. b. transport proteins only. c. pressure gradients only. d. moisture and pressure gradients only. e. moisture, pressure gradients, and transport proteins.

Biology & Microbiology

Termination is carried out by RNA polymerase in a rho-independent terminator

Indicate whether the statement is true or false

Biology & Microbiology