Explanation:
During a stimulus, there is an influx of Na+ ions into the cells. This causes the inside of the cell to develop a more positive charge compared to outside the cell. So, the cell attains a more positive charge when it is stimulated.
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Answer:
Answer:
The correct answer will be option-B.
Explanation:
The two main processes for the survival of living organisms is the photosynthesis and cellular respiration. These processes are served different functions to the organism but they are inter-related to each other.
The cellular respiration produces the by-products in the form of carbon dioxide and metabolic water which gets utilized during the photosynthesis. The water is utilized during the light-dependent reaction where water is broken down releasing oxygen utilized during respiration.
The carbon dioxide is utilized during the light-independent reaction in the synthesis of a glucose molecule.
Thus, Option-B is the correct answer.
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Answer:
Explanation:
Darwin's use of many different fields of study including geology, economics, and biology was incredibly important as it allowed him to make connections between them that ultimately led to ground breaking discovery. Such as animals that that migrated to different areas and were interconnected through their geological footprints that were left behind.
Answer:
Through this experiment we study the process of photosynthesis.
• In the begining the leaf disks's tissue has oxygen, this allows them to float.
• Then, in the experiment we infiltrate the leaf disks with a solution that has bicarbonate, and as a result their density changes (it increases) and so the leaf disks sink.
• Once the disks are on the bottom and we direct the light to them the process of photosynthesis starts, being the bicarbonate the source of carbon for the process.
• As we know a product of the photosynthesis proces is oxygen, so when it is released into the leaf disks the overall density changes again and the disks rise.
So as we can see, in this experiment the purpose of the bicarbonate is being the source of carbon for the process of photosynthesis that occurs in the leaf disks.
Edward Jenner inferred that a person who once had small pox cannot have it once again. So something is there in these persons which grows after the initial infection which interferes with the secondary infection resisting it.
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Explanation:</u></h3>
Edward Jenner is called the Father of Vaccination. Jenner noticed that the milkmaids who deal with the cows all the time don't generally suffer from the cowpox or small pox. Then as an Experiment, he took some sample from the pustules of the cow having pox and then cleaned it and injected the sample into a healthy child. Then when everyone of the locality suffered from the same disease, that child remained healthy. So that lead to infer that there are something in the pustule which lead to resist the secondary infection of this disease. So this lead to the invention of vaccines.
