A chemical change is a change in which the composition of the matter is changed at the molecular level, most chemical changes are not easily irreversible, for example, an egg being cooked, the egg changes from its liquid like state to a solid, and it is not possible to revert it back to its original change. The egg itself is changed in this case.
A physical change on the other hand however, is only changing the substance of a matter, not its composition, this is usually easily reversible. For example, water turning into ice, the water's substance changed from its liquid state to its solid state, it is still water, and it can easily be turned back into water by heating it.
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Answer:
Reactants of the cellular respiration process are:
1. C6H12O6
The phase reactant is used: Glycolysis
Location: cell cytoplasm
In cellular respiration, the glucose is used up in the phase known as glycolysis which is performed in the cell cytoplasm that breaks the glucose into 2 molecules of pyruvate.
2. 6O2
The phase reactant is used: oxidative phosphorylation
Location: mitochondrial matrix
Oxidative phosphorylation is the phase of cellular respiration that forms the ATP by the transfer of the electron to the oxygen which reduced the oxygen to water.
Products of cellular respiration are -
1. 6CO2
The phase reactant is used: Krebs cycle
Location: mitochondrial matrix
2. 6H2O
The phase reactant is used: oxidative phosphorylation
Location: mitochondrial matrix inner membrane
3. 38ATP
The phase reactant is used: oxidative phosphorylation, Glycolysis, Krebs cycle
Location: mitochondrial matrix, cell cytoplasm and inner membrane mitochondrial matrix
Answer: The correct answer is that steroidal hormones enter the nucleus and change gene expression in a target cell.
Steroidal hormones are hydrophobic in nature due to which they easily cross plasma membrane (lipid bilayer).
Their receptors are generally present inside the cell either in cytoplasm or on nuclear membrane.
They usually produce their effect by changing the gene expression of the cell.
Example of steroidal hormone may include estrogen, testosterone, et cetera.
Answer:
Aging changes occur in all of the body's cells, tissues, and organs, and these changes affect the functioning of all body systems.
Explanation:
