To study the fine structure of a mitochondrion, which type of microscope is least appropriate?

a. light
b. scanning electron
c. transmission electron


a

Biology & Microbiology

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The threat of bioterrorism

A. is due largely to the ease of spread and severity of diseases. B. is exaggerated in light of the efficiency of our healthcare system. C. may include rarely seen infectious agents. D. has prompted WHO to prepare a readiness plan. E. is due largely to the ease of spread and severity of diseases AND may include rarely seen infectious agents.

Biology & Microbiology

Which of the following is not true about monozygotic twins?

A) They share all alleles at all loci. B) They have a genetic relatedness of 0.5. C) They have a genetic relatedness of 1.0. D) They come from the joining of a single egg with a single sperm cell. E) They are the result of a split of the zygote after fertilization.

Biology & Microbiology

Nuclear envelopes form during which phase of mitosis?

A) Anaphase B) Prophase C) Metaphase D) Telophase

Biology & Microbiology

The enzyme formate dehydrogenase (FDH) splits formic acid to H2 and CO2 and is crucial to survival during fermentation because if fermentive intermediates were allowed to accumulate within the cell, the internal pH would become far too ________ to support viability.

A. alkaline B. acidic C. hypertonic D. hypotonic

Biology & Microbiology