It is pertinent to understand what hypertonic, hypotonic, and isotonic solution means before setting out to explain how a cell reaches equilibrium in each type of solution.
- A hypertonic solution is one whose solute concentration is higher than that of the sap of a cell that is immersed in it.
- A hypotonic solution is one with the same solute concentration as that of the sap of the cell immersed in it.
- An isotonic solution has a lower solute concentration than that of the sap of the cell immersed in it.
In biological systems, water molecules move by osmosis from the region of higher water potential or lower concentration of solutes to the region of lower water potential or higher concentration of solute. An equilibrium is reached when there is no net movement of water between two sides. Hence;
- A cell placed in a hypertonic solution will lose water to the surrounding solution until an equilibrium is reached. This means that such a cell will end up shrinking (wilting) or even dying due to loss of water from the cell sap.
- A cell placed in a hypotonic solution will gain water from the surrounding solution until there is no net movement of water anymore. Such a cell might become turgid or even burst out its cell content.
- A cell placed in an isotonic solution will neither gain nor lose water because the cell sap and the surrounding solution have equal solute concentrations.
More about osmosis here: https://brainly.in/question/1213189
Answer:
are densely packed with numerous mitochondria.
Explanation:
Mitochondria are considered as the energetic centers of the eukaryotic cells. These organelles (mitochondria) produce energy in the form of Adenosine Triphosphate (ATP) through the mechanism of cellular respiration, i.e., mitochondria are the organelles where aerobic phases of cellular respiration occur. In presence of oxygen, mitochondria convert chemical energy obtained from foods to ATP, which is the energy coin that cells use to carry out all their metabolic processes (e.g., reproduction, growth, development, etc). Thus, cells with high metabolic requirements need to have many mitochondria in order to produce more ATP.
Answer:
The graph shows that the population of bacteria is increasing with the passage of time. During 1st hour, the population of bacteria is 50 per ml. In second hour, the population is doubled i. e. 100 per ml. In the 3rd hour, the population reaches to 200 per ml and in 3 and half hours, the population touches the value of 300 per ml. So the graph clearly shows that population is double with each hour.
Phylogeny<span> is discovered using molecular sequencing data and morphological data matrices. we learned it yesterday and i know a lot but im still learning.</span>