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bearhunter [10]
4 years ago
12

Unlike bird wings, insect wings do not have bones or feathers. Why are there differences in the structures of bird and insect wi

ngs?
Biology
1 answer:
dolphi86 [110]4 years ago
3 0
<span>There are differences in the structures of bird and insect wings because b</span>irds are vertebrates and, therefore, have internal structural members. Insects are invertebrate and have external structural members.
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An enzyme contains a catalytic histidine residue in its active site that must release an R group proton to solution in order to
hjlf

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.

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3 years ago
What organelle packages up proteins inside the cell?
Dmitry_Shevchenko [17]
Golgi bodies
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Can someone please explain how I can solve this equation?
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The answer is X is equal to Z
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When planning care for a cardiac patient, the nurse knows that in response to an increased workload, cardiac myocardial cells wi
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<span>In response to an increased workload, cardiac myocardial cells will increase in size. Myocardial cells are the muscle cells within the heart. These cells naturally increase in size as the heart enlarges during development. The cells can also grow during extensive exercise, heart disease, or due to an injury to the heart muscle (such as a heart attack).</span>
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Answer:

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3 years ago
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