Petroleum is not a source of coal or coal-precursor.
Answer:
The inflow of sodium ions.
Explanation:
The generation of the action potential requires the change in the membrane potential of the cell. This membrane potential is maintained due to the unequal distribution of the ions.
The cell potential of the cell is -70mV and maintained due to the presence of potassium ions. The depolarization occurs due to the influx of the sodium ions and results in the change in the membrane potential upto +30mV. The neurotoxin that interferes with depolarization process might affect the sodium ions uptake.
Thus, the answer is inflow of sodium ions.
I think the answer to this question is hypertonic to hypotonic as diffusion is the movement of water from a high to low concentration and hypertonic contains a high concentration of solutes and hypotonic contains a low concentration of solutes (the are opposites). Hope this makes sense
Answer:
<h2>Cystic Fibrosis</h2>
Explanation:
Frame shift mutation is the mutations caused by the deletion or insertion of nucleotide through which reading sequence of DNA is changed. By the change of reading sequence, the protein translated by this new sequence is changed, because these new codons code different amino acids.
Frame shift mutation cause Cystic Fibrosis (CF) in lung cells. Cystic fibrosis is an inherited disease, causes problems in the body's cells that make salt, water, and mucus.
Answer:
<em>The correct option is D. It is carbon dioxide released by respiration.</em>
Explanation:
The process by which ATP is abundantly formed in organisms is termed as cellular respiration. Cellular respiration can be described as a process in which carbon dioxide and water are produced from glucose and oxygen. ATP molecules are synthesized by this process which are used for cellular activities.
Hence, the substance X in the investigation shows carbon dioxide which was produced when the yeast cells began to respire. Yeast cells can respire either in the presence of oxygen or without oxygen.
