Answer:
Neither
Explanation:
It is important to note:
Enzymes can only be denatured but not killed as enzyme is not a living thing that can be said to be alive
temperature and pH may change the 3D shape of an enzyme, this destroy the active site of the enzyme thereby reducing its activity.
Answer:
2)
Explanation:
The positive control is the treatment where bacteria grew without lead. Since positive control indicates the presence of bacteria in the experimental conditions, it is possible to confirm that they only death in presence of this metal. However, it is important to note that it is imperative to repeat this experiment three times and also to include a negative control in order to confirm these results.
According to the research, the primary purpose of membrane channels is to circulate ions, and of membrane pumps is to maintain differences in ionic concentration.
<h3>What are membrane channels and pumps?</h3>
They are pores in the cell membrane through which ions circulate for muscle contraction or membrane potential changes that may depend on a ligand or voltage, depending on whether their opening is determined by the binding of a ligand or by changes of voltage.
In this sense, membrane pumps is the mechanism of active ion transport, consuming energy across a membrane against an electromechanical gradient to maintain differences in ion concentration between the intracellular and extracellular space.
Therefore, we can conclude that according to the research, the primary purpose of membrane channels is to circulate ions, and of membrane pumps is to maintain differences in ionic concentration.
Learn more about membrane channels and pumps here: brainly.com/question/11090806
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Answer:
<u>The heavier the hummingbird, the fewer times its wing will beat per second. </u>
Explanation:
There is a negative slope in a graph respective to the components of the x and y axis. Therefore, heavier the hummingbird -> less beats per second.
<u>afferent signals</u> flow inward to the central nervous system from sensors in the periphery, while <u>efferent signals</u> flow outward from the central nervous system to the periphery.
Due to technical problems, you will find the complete explanation about the reflex arc in the attached files.
You will learn more about the reflex arc at
brainly.com/question/894334
brainly.com/question/12876504
brainly.com/question/13455404
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