What are the differences between red and white muscle fibers?
What will be an ideal response?
Red fibers are high in mitochondria and myoglobin and can extract energy from food aerobically for prolonged periods. White fibers are low in both mitochondria and myoglobin and extract energy from food anaerobically for brief bursts.
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What is the drawback of live attenuated vaccines?
A) They require more secondary reimmunizations than other vaccines. B) They are not effective in adults. C) They do NOT provide a long-lasting secondary immune response. D) They can cause disease in some immunocompromised individuals.
What is a mechanism by which tRNA is processed in E. coli?
A. RNaseP acts as an endonuclease B. The recognition sequence of RNaseD is 3'CCA5' C. RNAseD acts as an endonuclease D. tRNA is not processed in E. coli
One example of infectious disease transmittion by a fomite is
A. a baby born with congenital syphilis from an infected mother. B. a teenager with severe acne due to propionibacteria growing in sebaceous glands. C. a child developing a cold after playing with a toy that harbored rhinovirus. D. None of the choices are correct.
Ionizing radiation can produce which of the following?
A. hypoxanthine B. cytosine C. stop codons D. thymine dimers E. free radicals