Answer:
The correct answer is option A
Explanation:
Hypoparaghyroidism occurs when thyroid gland produce little parathyroid hormone.
This is caused by:
1. Injury to the parathyroid glands during thyroid and neck surgery.
2. It is also caused by auto immune disorder. This is as a result when the body's natural defence against invading organisms starts to attack perfectly healthy tissues.
3. Congenital defects: This is as a result when infants are born without parathyroid tissue, that is ability to make thyroid glands or when the mother has hypoparathyroidism.
Hello there
The answer is The bacteria are motile.
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A lake is an example of a littoral zone and a spring is an example of a discharge zone. The littoral zone is a part of the sea or lake that is close to the shore. It extends on high water mark to shoreline that has been submerged. It allows as well aquatic plants to grow. Groundwater flows until it reaches the discharge zone in which the water is above the surface of the land.
<h2>Answer:</h2>
The statement that most directly explain this concept is "nitrifying bacteria that convert ammonia into nitrites and nitrates are found in the soil".
<h2>Explanation:</h2>
Bacteria living in the soil in root nodules of various plants are directly involved in the nitrogen cycle. The nitrifying bacteria "<em>Nitrobacters" </em>and "<em>Nitrosomonas"</em> can fix atmospheric nitrogen and can convert it into nitrates and nitrites. As plants can not directly fix that atmospheric nitrogen so these <em>Nitrobacters</em> and <em>Nitrosomonas </em>who lives in symbiotic relation in their root nodules do this nitrogen fixation for them. So these bacteria provide them nitrates and nitrates that plants can directly uptake and can use in their essential metabolic cycles. In this way, Geosphere plays a critical role in nitrogen fixation.
Answer: option D. it acts as a reactant in a chemical reaction.
The substrate is the the chemical species in an organic reaction that reacts to form other product, so the substrate is a reactant. The enzymes can act over specific substrates to accelerate the reaction. While the enzymes are not consumed (they are catalysts) the substrates are consumed.
