Why is skepticism considered desirable in the scientific community? A) Because i
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Why is skepticism considered desirable in the scientific community? A) Because it encourages competition among scientists B) Because it discourages critical thinking C) Because it is not a part of the scientific method D) Because it encourages questions and causes scientists to be careful E) Because Darwin was a noted skeptic Why should the specimen always be centered when switching to a higher power lens? A) To allow light to pass through it B) To ensure that the object will still be in the field of view C) So as to achieve a balanced image D) So as not to strike the specimen with the lens E) To ensure that the resolution is correct Which cellular structure is found only in plant cells? A) Ribosomes B) Centriodes C) Lysosomes D) Plasma membrane E) Large central vacuoleExplanation / Answer
Answer 32: A) Long chain of simple sugars. (As explained below)
Starch is a polysaccharide made of glucose monomers.
Answer 33: E) Blue-black. (As explained below)
Iodine when added in the form of iodine-KI reagent to a solution containing starch will give blue-black color.
Answer 34: E) They increase the amount of activation energy required for a reaction to occur. (As explained below)
Enzymes increase the rate of a reaction but lower the amount of activation energy.
Answer 35: B) Tube 2. (As explained below)
Iodine when added in the form of iodine-KI reagent to a solution containing starch will give blue-black color. 37 degrees C is the optimum temperature for this test.
Answer 36: D) Because it encourages questions and causes scientists to be careful. (As explained below)
Skepticism leads scientists to rethink hypothesis and review previous evidences and use scientific methods to test them.
Answer 37: B) To ensure that the object will still be in the field of view. (As explained below)
The specimen should be centered under a low power lens because when you switch to the higher resolution the field of view becomes smaller and the view at the edges becomes less visible.
Answer 38: C) Lysosomes. (As explained below)
Plants have vacuoles instead of lysosomes for excretion of waste.
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