If you plant your potatoes in late August, while it is still hot, you may still have them in the cooler months after. Cool weather doesn't really harm potatoes, they can still grow then, it is only when it is frosty that potatoes die off. The foliage will die, but the potatoes will remain securely underground until you are ready to dig them out. Additionally, potatoes can be grown indoors so that you can always have them.
Answer: The first trophic level usually is green plants. The second tropic level includes herbivores, and insects are a principal component. However, insects also are carnivores, parasites, and detritivores, so they appear in various tropic levels
Explanation:
Answer:
B Low Solar Activity
Explanation:
Fluctuations in the amount of insolation (incoming solar radiation) are the most likely cause of large-scale changes in Earth's climate during the quaternary.
Options missing:
a) The pH of the environment should be relatively high.
b) The pH of the environment should be relatively low.
c) The pH of the environment would not matter.
d) The environment should be set to the biochemical standard state.
Answer:
a) The pH of the environment should be relatively high.
Explanation:
For optimal function an enzyme needs a certain environment or condition. As temperature increases, the rate of enzyme activity also increases. As temperature increases toward its optimum point of 37 degrees Celsius (98.6 F), hydrogen bonds relax and make it easier for the hydrogen peroxide molecules to bind to the catalase.
The part of the enzyme where this reaction takes place is called the active site. A temperature that is higher or lower than this optimum point changes the shape of the active site and stops the enzyme from working. This process is called denaturation.
Enzyme pH levels also change the shape of the active site and affect the rate of enzyme activity. Each enzyme has its own optimal range of pH in which it works most effectively. In humans, catalase works only between pH 7 and pH 11. If the pH level is lower than 7 or higher than 11, the enzyme becomes denaturated and loses its structure. The liver sustains a neutral pH of about 7, which creates the best environment for catalase and other enzymes.
General acid catalysis would require histidine to be protonated at pH values (pH 8.0) optimal for enzymatic activity which is relatively high.
