Answer:
The correct answer is option d, that is, hydrogen bonds are broken, proteins are denatured, and membranes become too fluid.
Explanation:
The maximum growth temperature refers to the highest temperature at which growth can take place. Let us take an example of bacteria, it is found that each bacterial species possess a requirement of specific growth temperature, which is mainly determined by the requirement of the temperature of its enzymes. Each of the organism exhibits an optimum growth temperature, a minimum growth temperature, and a maximum growth temperature.
When for an organism, the temperature goes more than its maximum growth than it results in the dissociation of the hydrogen bonds, denaturation of the proteins, and even the membranes become too fluid. This can even result in the death of the species. However, there are some of the organisms, which can thrive high temperatures known as thermoduric organisms, but they fail to grow effectively at such temperatures.
Exceeding the maximum growth temperature of an organism can lead to the breaking of hydrogen bonds, denaturation of proteins and the over-fluidization of cell membranes.
At temperatures higher than the maximum growth temperature for an organism, d. hydrogen bonds are broken, proteins are denatured, and membranes become too fluid. When the temperature exceeds the maximum threshold for an organism, this exerts stress on the cell causing various biological consequences. For instance, hydrogen bonds within molecules can get disrupted, which can lead to protein denaturation. This means that the proteins lose their functional 3-dimensional shape, a process that can sometimes be irreversible. Moreover, excessive heat can increase the fluidity of cellular membranes to an extent such that they cannot function properly anymore, making the cell unviable.
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A)a large amount
B)a small amount
C)an unlimited amount
D)none of these
Answer:
A dilute solution has less amount of solute in the solvent. Therefore, the correct answer to the question is option B.
Explanation:
A solution is defined as a mixture of the solute and solvent. The concentration of solution depends upon the solute as well as solvent. A solution is known as to be dilute when there is less amount of solute and more amount of solvent.
A solution is said to be consulted when there is more amount of solute and less amount of solvent. Therefore, we can see that concentration of the solution is dependent upon the solute amount. In a solution a solute is present in in little less amount as compared with the solvent.
B. molecular size.
C. molecular mass.
D. atomic mass
Not all cells are surrounded by a cell wall. Though cell walls are found in plants, fungi, bacteria, and some protists, animal cells lack them. Thus, the statement 'all cells are surrounded by a cell wall' is false.
The statement that 'all cells are surrounded by a cell wall' is false. While it's true that many types of cells do have cell walls, such as those found in plants, fungi, bacteria, and some protists, not all cells do. A prime example of this is animal cells, which lack cell walls. Instead, they are surrounded by a plasma membrane and sometimes an extracellular matrix that provides structural support and signals cellular function.
Cell walls are essential for many cells as they provide a protective layer, giving shape and rigidity, preventing osmotic lysis, and offering support against environmental stresses. The composition of these cell walls can vary greatly, depending on the type of cell. For instance, cell walls can be made of materials like cellulose (in plants and fungi), chitin (in fungi), or various substances in protist and algae cells)
However, even though some cells have cell walls, remember that not all do. So, it's inaccurate to state that every cell has a cell wall surrounding it.
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Answer:
The correct answer is - growth and development.
Explanation:
Mitosis is one of the cell division cycles that occurs in the somatic cells. It is characterized by producing the two daughter cells by dividing one parent cell which is an exact copy and the same number of chromosomes.
The major importance of mitosis in the life cycle of an organism is growth and development by producing more cells and rapid in numbers. The cells divide in the mitosis for the major purpose of tissue repair and growth of organisms.
Thus, the correct answer is - growth and development.
Answer:
cell type – prokaryotic or eukaryotic
cell structure – cell wall
nutrition – autotrophic or heterotrophic
body type – unicellular or multicellular
Explanation:
on edg 2021