Answer:
Many people are familiar with hibernation, the winter practice of some mammals such as bears, and even some plants. It is commonly thought that snakes also hibernate because we don’t see them as much in the colder months, but this assumption is mistaken and could lead to unexpected – and likely unwanted – snake run-ins.
Hibernation is the state of very deep sleep where the animals or plants will stay dormant to conserve energy until the cold season passes. For example, bears will often gorge on food to build up their fat stores then go into hibernation because their food source will be very low in the winter months. The hibernation state helps them survive the winter by lowering their body temperature, slowing their heartbeat and breathing, depressing their metabolism, and exerting little to no energy. Their bodies then use up the stored fats to maintain their necessary body processes and to keep them warm through the season.
Unlike mammals, snakes don’t go into full hibernation. Instead, snakes enter a similar state called brumation.
Answer:
All carbohydrates, including sugar, therefore contain the same three elements: carbon, hydrogen, and oxygen. Different arrangements of these elements form single units to make different types of carbohydrates.
Taq polymerase enzyme important for efficiency in PCR because it is thermostable polymerases that remain active at high temperatures (90 -95 degree Celsius) a beyond the denaturation temperature of DNA.
PCR :
Polymerase chain reaction (PCR) is a laboratory technique for rapidly amplifying millions to billions of copies of a specific segment of DNA, which can then be used for further research.
Taq polymerase is a DNA polymerase derived from bacteria called Thermus aquaticus, which are naturally thermophilic and is a thermostable polymerases that remain active at temperatures higher than the temperature at which DNA is denatured. This allows PCR to be used on DNA samples without the need to add new DNA polymerases after each cycle.
Learn more about taq polymerase here :
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Answer:
The correct option is: E. 70 square meters
Explanation:
Pulmonary alveoli is described as the cup-shaped hollow cavity, found in the alveolar sacs of mammalian lungs.
The alveolar membrane, also called the respiratory membrane, allows the exchange of gases. Across this membrane, carbon dioxide is released from the capillaries into the alveoli and oxygen is diffused from the alveoli into the capillaries.
<u>About 300 million alveoli are present in the lungs of a human, which makes about 70m² of surface area. </u>