The question is incomplete. The complete question is as follows:
Dieffenbachia plants usually grow well without fertilizer. A student wanted to see if adding liquid fertilizer would make a difference in the growth of the plant. Three plants were placed in the same type of pot with the same type of soil. Two plants received fertilizer and one plant did not. All plants received the same amount of light and water during the experiment.She watched the plants grow over a period of 30 days, only adding the same amount of water to each plant on a weekly basis. What variable is NOT being controlled in this experiment?
Answer:
Amount of fertilizers.
Explanation:
Fertilizers may be defined as the chemicals that are required to increase the quality and quantity of the crops. The chemical fertilizers may cause environment pollution.
The experiment given in the question explains the different conditions at which the plant was grown. The controlled variable is the substance whose value is known and being constant in the experiment. In this experiment, the fertilizer is randomly given to the plant and its value is unknown. So we can say that the fertilizer is not a controlled variable in the experiment.
Thus, the correct answer is amount of fertilizers.
It can be observed from their compositions that methyl orange is a polar compound because of the existence of -SO3Na functional group. The -SO3Na group is ionic in nature and imparts polarity to methyl orange. While biphenyl is a non-polar compound because of the non-existence of polar functional groups in its composition.
The silica gel chromatography refers to an apparatus, which is used to distinguish molecules on the basis of their polarity variations. The silica gel, that is, a stationary phase is polar in nature, and thus, the non-polar compounds seem to elute prior to the polar ones.
In the mentioned case, the biphenyl will elute first because of its non-polar characteristic and thus will exhibit high Rf value.
Answer:
The nuclear envelope disappears at the end of prophase.
Explanation:
Chromosomes become visible, the nucleolus disappears, the mitotic spindle forms, and the nuclear envelope disappears. Chromosomes become more coiled and can be viewed under a light microscope. ... The nuclear envelope disappears at the end of prophase.
Answer:
Damian here! (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
Glycolysis reactants are often listed <u><em>glucose and oxygen</em></u>, while water, carbon dioxide and ATP (adenosine triphosphate, the molecule living most commonly use to power cellular processes) are given as glycolysis products,
Explanation:
Hope this helps? :))
While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.
