Answer:
specificity
Explanation:
Enzymes are proteins with high specificity, ie each catalyzes only one type of chemical reaction, or a small number of reactions. This is due to its shape, which presents on the surface molecular fittings, the active sites or centers where the substrates or reagents attach. An example of this is the ability of an enzyme to select a specific substrate from the myriad of molecules floating around its environment.
Therefore, substrates other than those that fit into the active sites of a specific enzyme cannot be part of that reaction, there must be another enzyme to catalyze its reaction. The specificity of enzymes for their substrates is similar to the specificity between a lock and its key.
C is the answer. There are single-celled organisms that are considered a living thing. The others are all true about the cell.
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Ice albedo. Ice is white and very reflective, in contrast to the ocean surface, which is dark and absorbs heat faster. As the atmosphere warms and sea ice melts, the darker ocean absorbs more heat, causes more ice to melt, and makes the Earth warmer overall. The ice-albedo feedback is a very strong positive feedback.
An important organelle found in eukaryotic cells produces ribosomal subunits from proteins and ribosomal RNA, also known as rRNA. It then sends the subunits out to the rest of the cell where they combine into complete ribosomes. Ribosomes make proteins; therefore, this organelle plays a vital role in making proteins in the cell. What is this organelle?D) Nucleolus
Substrate concentration affect enzyme activity -
1. There is more enzyme activity at higher substrate concentrations due to more collisions between enzyme and substrate until a maximum rate is reached
2 Once the maximum reaction rate for the enzyme is reached, the reaction rate levels off.
The enzymatic reaction depends on various factors including temperature, substrate concentration, concentration enzyme, and other factors. The rate of a chemical reaction is affected by the total number of enzymes as well as the concentration of substrate
- Increasing substrate concentration increases the activity of a corresponding enzyme
- After a certain point, the rate of activity will cease to rise regardless of any further increases in substrate levels as the environment is saturated with substrate and all enzymes are bound and reacting to the maximum limit.
- A high concentration of substrate causes increases in a collision between enzyme and substrate.
- Collisions bring substrate molecules and enzymes together and increase enzymatic activity.
Thus, Substrate concentration affect enzyme activity -
1. There is more enzyme activity at higher substrate concentrations due to more collisions between enzyme and substrate until a maximum rate is reached
2 Once the maximum reaction rate for the enzyme is reached, the reaction rate levels off.
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