Biology, 03.01.2020 10:31 myapawesomeox22sq

Bacteria are important because of their extreme flexibility and capacity for rapid growth and reproduction. true false

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Bacteria are important because of their extreme flexibility and capacity for rapid growth and reproduction. This statement is- TRUE

Explanation:

Bacteria can grow best in their optimum environment. But they can survive in extreme conditions also.

Temperature- Optimum temperature for bacterial growth is 20- 45 degree Celsius. But Psychrophiles can survive on the lower temperature also . They can survive on refrigerator temperature lower than 4 degree Celsius.

Thermophiles even can grow on higher temperature up to 80 degree Celsius. Some hyperthermophiles has been discovered which can survive temperature ranging from 80-121 degree Celsius. Bacteria are discovered from hydrothermal vents where temperature is measured 340 degree Celsius. For bacteria obtained from hydrothermal vents optimal growth temperature is 100 degrees Celsius.

Like extreme temperature , bacteria can grow in extreme salt concentration are known as HALOPHILES.

Aerobic bacteria require oxygen to survive. But without oxygen also they can survive i,e. ANAEROBIC bacteria.

They can grow in highly acidic medium as well as highly alkaline medium.

They can survive in these extreme conditions , this flexibility and tolerance comes from their genes. Because of their very short duplication time /multiplication time they can achieve this tolerance. E. coli bacteria found in human intestine has very short doubling time of 20 minutes. They have ability to change /mutate their genes according to the survival condition. In genetic engineering also the advantage of using microbe with shorter duplication time is useful. Within few minutes one can get the result whether the desire gene is expressed or not.

Answer from: Quest

1. when the tempature rises,your sweat glands and then springs into action making perspiration. some sweat evaporates with your skin taling heat with it.2.some of the blood pumped by the heart travels by your lungs to get rid of carbon dioxide and pick up oxygen.3.saliva produces by, you drinking water which saliva is 98% of. when mucus builds up in your body it also creates saliva as well as, antibacterial compunds.4.when the core body tempature drops, the shivering reflex is triggered to maintain homeostasis. for example: when you get out the pool you start to shiver because it is cold.

Answer from: Quest

If these are the missing choices: a. to determine skin temperature, place the back of your hand against the patient's skin.b. determine body temperature by touching the patient's hands and feet.c. skin temperature will tell you very little about this patient's condition or well-being.d. the patient's skin temperature and color will likely be warm and red.my answer is: a. to determine skin temperature, place the back of your hand against the patient's skin. using the back of the hand to check for temperature rather than the palm is more effective because the back of the hand has more nerves that can feel and transmit the temperature than the palm.

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