not staining surro… Show more In 1884, Hans Christian Gram described a method of staining bacterial cells while not staining surrounding animal tissues; however, he thought the staining method he developed was faulty because not all bacteria stained. In a letter to the editor of

Based on biochemical tests and oxygen usage, how would you identify and classify, respectively, th… Show more Based on biochemical tests and oxygen usage, how would you identify and classify, respectively, the following microbes: Staphylococcus aureus Pseudomonas aeruginosa Bacillus subtilis Escherichia coli • Show less
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Pasteur discovered that a… Show more In 1835, Bassi showed that a fungus caused a silkworm disease, and in 1865 Pasteur discovered that a protozoan caused another silkworm disease. Why do we use Koch’s postulates instead of Bassi’s or Pasteur’s postulates? • Show less

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The bacterial enzyme streptokinase is used to digest fibrin (blood clots) in patients with atheros… Show more The bacterial enzyme streptokinase is used to digest fibrin (blood clots) in patients with atherosclerosis. Why doesn%u2019t injection of streptokinase cause a streptococcal infection? How do we know

Haemophilus influenzae requires hemin (X factor) to synthesize cytochromes and NAD (V factor) from… Show more Haemophilus influenzae requires hemin (X factor) to synthesize cytochromes and NAD (V factor) from other cells. For what does it use these two growth factors? What disease(s) does H.

I have to make a presentation on this scientific journal (2 and a half pages), but I also hav… Show more Hello, I have to make a presentation on this scientific journal (2 and a half pages), but I also have a midterm on the

In lab, you will count bubbles created by an aquatic plant. We are making the assumption that these… Show more In lab, you will count bubbles created by an aquatic plant. We are making the assumption that these bubbles consist of oxygen released by photosynthesis.

2 ) Which of the following is the best evidence that thermoregulation in an endothermic animal is ta

In preparation for a summer barbecue, your classmate cuts up chickens on a wooden carving board. Af… Show more In preparation for a summer barbecue, your classmate cuts up chickens on a wooden carving board. After running the board under water for a few seconds,

In prokaryotes, the methionine that initiates the formation of a polypeptide chain differs from sub… Show more In prokaryotes, the methionine that initiates the formation of a polypeptide chain differs from subsequently added methionines in that _______ A) the initiating methionine is not an amino