Birds, Salamanders and Sharks are all Endotherms and can manipulate their body temperatures.
A decomposer is an organism usually a bacteria or fungus that decomposes organic material.
Decomposers are considerd the last tropic level because they feed on everything.
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Schwann - In 1839, he cells are the basic unit of animal structure
Schlieden - In 1838, he discovered cells are the basic unit of plant structure
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Because the sun's light is not good enough for it
Answer:
B) stain only the thicker peptidoglycan cell walls
Explanation:
Gram staining is a technique which was developed by the Hans Christian Gram in 1884 to distinguish the bacterial strains. Based on the colour absorbed and retained by the bacteria, the bacteria are distinguished either as gram-positive or gram-negative.
He used a colour stain- crystal violet which is a positive dye and binds to the cell wall made of peptidoglycan. The crystal violet binds to the cell wall with the help of a mordant called iodine. If this dye retains inside and the cell appears purple then the cell is considered gram-positive else negative.
Thus, Option-B is correct.
