Nitrogen returns to the atmosphere through a process called denitrification. <u>Option C.</u>
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Denitrification is the process of converting nitrate to nitrogen gas thereby removing bioavailable nitrogen and returning it to the atmosphere. Nitrogen is returned to the atmosphere through the activity of organisms known as decomposers. increase. Some bacteria are decomposers breaking down the complex nitrogen compounds found in dead organisms and animal waste.
Denitrification is a microbial process that reduces nitrates and nitrites to gaseous nitrogen primarily nitrous oxide N2O and nitrogen N2. Various microorganisms can denitrify. Denitrification is a response to changes in oxygen O2 concentration in the immediate environment. Atmospheric nitrogen is utilized by certain microorganisms through a biological fixation process. Alone or in symbiotic relationships with some plants and animals microorganisms can fix atmospheric nitrogen.
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Answer:
The options include:
1. degrade rust into a usable form of iron
2. secrete proteases that degrade host factors such as hemin or hemoglobin in order to access the released iron
3.invade cells in order to access iron within degradative lysosomes
4.use adhesins to bind free iron within the host
5.secrete lactoferritin that binds iron at very low concentrations
The answer is
2. secrete proteases that degrade host factors such as hemin or hemoglobin in order to access the released iron.
Due to the abundance of the pathogenic bacteria in their host , they are able to secrete enzymes known as protease which acts on protein component of the blood called Hemoglobin. This subsequent enzymatic action results in the release of iron for their use.
Answer: D. Earth’s outer core is deeper within Earth than oceanic crust is
<span>According to Selye (1956, 1976), the resistance phase of the general adaptation syndrome is responsible for the person making efforts to cope with the threat.</span>
There are three phases in the <span>Hans Selye's General Adaptation Syndrome (GAS). The first one is the Alarm (</span>organism becomes mobilized to meet the threat) . The second is Resistance, and the third is the Exhaustion (it occurs
if organism fails to overcome threat).
Answer: C) Is gold heavier than silver?
Explanation: .-.
