Answer:
One of the probable ways to determine how long ago any two species of bacteria diverged from each other is by drawing a phylogenetic tree.
Explanation:
- Phylogenetic tree are trees that show the ancestry of two species of interest and the relationship between them.
- The idea behind the construction of phylogenetic tree is darwins's "descent with modification theory".
- A phylogenetic tree is constructed using the similarities or differences in either physical characteristics, behavorial, or genetic buildup.
- Derived traits shared between the different species are the actual data used to construct a phylogenetic tree.
Endocytosis is an example of passive form of transportation which is used in the cells to move substances from one point to another. It is described as passive because the process does not require energy.
Active transport is a type of transport used for movement of particles in the cells which require energy for it to occur. The major source of energy for active transport is ATP molecules, which are hydrolyzed to release energy.<span />
Answer:
The process of respiration is similar in all organisms, whether plants or animals – carbon dioxide is given out and oxygen is used up, and a lot of energy is produced. In plants, specific organs for breathing are absent. The exchange of gases, however, occurs by the process of diffusion.
Explanation:
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True organisms can be both
Answer:
C. The inhibitor binds to the enzyme's active site, because its shape is similar to that of the substrate.
Explanation:
An enzyme can be defined as a biological catalyst that typically lowers the activation energy of a biological reaction. When the activation energy of a reaction is low, the rate of the reaction would be faster. Therefore, an enzyme speeds or catalyzes the rate of a reaction by lowering its activation energy. Also, if the conditions are not optimal for an enzyme, it limits the ability of an enzyme to bind or be joined with its substrates.
Generally, enzymes function best at a specific pH and temperature level. An increase in temperature increases or speeds up the rate of a reaction while low temperature limits or reduces the rate of a reaction. The optimal temperature for enzymes in the human body is around 37 degrees celsius.
An allosteric effector can be defined as an agent, organ or molecule that is being binded to an enzyme at a site, thereby causing a reduction (negative effect) or an increase (positive effect) in an enzyme activity.
An inhibitor is any substance that slows down or stops a biological process or chemical reaction.
Hence, the statement which best describes the function of a competitive inhibitor in an enzyme-catalyzed reaction is that the inhibitor binds to the enzyme's active site, because its shape is similar to that of the substrate and consequently, slowing down or stopping the process.