Explain what happens to the catalase molecule and activity when the pH is on either side of the optimum level.
What will be an ideal response?
The catalase will be denatured and will slow down as its shape is altered, even slightly.
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A graduate student is studying the distribution of auxin in roots and stems exposed to sunlight
He notices that more auxin collects in the sides of stems and roots that are not exposed to light; however, the effects of this distribution are very different. Why? Select all correct choices. A. Auxin prevents cell elongation in the shaded cells of stems. B. Auxin (via ethylene) promotes cell elongation in the shaded cells of roots. C. Auxin (via ethylene) prevents cell elongation in the shaded cells of roots. D. Auxin promotes cell elongation in the shaded cells of stems.
You have to determine what method is best to prevent the growth of microorganisms in your company's food, ham roasts. This method should be efficient, have a high kill rate, not change the food integrity or taste for the most part, and not add much in the way of chemicals. What would you choose?
A. Gamma radiation B. Pasteurization C. Filtration D. Food preservatives E. Freezing
Describe how stomach ulcers can develop in some people (but not others) due to the activity of native microorganisms
What will be an ideal response?
Body parts that are similar in different lineages because they are adapted to the same environment are ____
a. homologous structures b. comparative structures c. analogous structures d. repetitive structures e. vestigial structures