A group of scientists are studying the effects of different fertilizers on the growth of pea plants. They began their study with
10 pea plants. They gave each plant a different type of fertilizer and tracked their growth over a period of 2 months. The results of this experiment weren’t considered valid by other scientists because there was no control group. Which of the following represents an appropriate control group for this experiment? A. A group of plants that’s not subjected to any fertilizer B. A group of plants that’s subjected to one fertilizer C. A group of plants that’s subjected to all types of fertilizers D. A group of plants that’s subjected to two fertilizers
A. A group of plants that’s not subjected to any fertilizer
Explanation:
In a scientific experiment, a control group is the group that did not receive any of the treatments evaluated in the experiment.
In the experiment shown in the question above, the group of scientists wanted to test the effects of different fertilizers on the growth of 10 pea plants. Each fertilizer represents a treatment that will be tested on the plants, in which case the control group would be a group of plants that were not submitted to any fertilizer.
The control group is important because it serves as a reference standard for the evaluation of variables in other treatments. Without the control group, it is not possible for the experiment to have a credible result.
<em>There are a few unique kinds of this simple development of particles. It could be as basic as atoms moving uninhibitedly, for example, assimilation or dispersion. </em>
Proteins are utilized to help move atoms all the more rapidly. It is a <em>procedure called encouraged dispersion.</em>
It could be as straightforward as acquiring a glucose particle. Since the cell film won't permit glucose to cross by dispersion.
The cells are in a zone where there is a huge focus contrast. For instance, oxygen particle focuses could be exceptionally high outside of the cell and extremely low inside.
<em>Those oxygen particles are little to such an extent that they can cross the lipid bilayer and enter the cell. </em>
<em>This is a water explicit procedure. For the most part, cells are in a domain where there is one convergence of particles outside and one inside.</em>
Since focuses like to be the equivalent, the cell can siphon particles in an out to remain alive. <em>Assimilation is the development of water over the layer</em>
The Discovery<span> of Radioactivity. In 1896 </span>Henri Becquerel<span> was using naturally fluorescent minerals to study the properties of x-rays, which had been</span>discovered<span> in 1895 by Wilhelm Roentgen</span>
