What is used to focus the beam of electrons in an electron microscope?
a. electromagnets
b. condenser lens
c. light rays
d. X-ray diffraction
e. glass
Answer: electromagnets
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Microbiology Chapter 1
- The analysis of microbial strains as evidence in criminal investigation is known as:
- The study of and cause of disease in humans, animals, and plants is called
- Taq polymerase formed the basis of a multibillion-dollar industry of
- Which scientist first discovered the process of transformation?
- What type of analysis was used to discover the overall structure of the DNA double helix?
- The Asilomar Conference was held to regulate and restrict the field of
- The X-ray diffraction studies by which of the following scientists concluded that DNA was a double helix?
- How are microbes classified today?
- Carl Woese's discovery replaced the classification scheme of five kingdoms with the scheme of three
- In the thee-domain model, the bacterial ancestor of chloroplasts derives from ancient
- Which of the following organelles are thought to be prokaryotic origins?
- The three-domain model, the bacterial ancestor of mitochondria derives from ancient
- The genetic expression machinery of arches is most similar to
- Which group of microorganisms include many that grow in extreme environments?
- Organisms which live symbiotically led inside a larger organism are known as
- How did Sergei Winogradsky grow lithographs?
- Which type of compounds have a sting tendency to accept electrons?
- Early metabolism may have been catalyzed by
- Which microbes may resemble those of the earliest life forms?
- The development of the theory of the "RNA world" resulted from the discovery of
- The environment of early Earth may have contained all EXCEPT
- Which of the following does NOT contain DNA or RNA?
- All of the following are true about penicillin EXCEPT
- Which of the following can safely be ingested to fight bacterial infections?
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