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Elenna [48]
3 years ago
5

Most life forms cannot use N2 as it exists in the atmosphere. ___________ are able to convert N2 to reactive nitrogen, which can

then be used by other life forms.
Biology
1 answer:
just olya [345]3 years ago
8 0

Answer:

Nitrogen fixing bacteria

Explanation:

Nitrogen-fixing bacteria are the microbial organisms that play an important role in the conversion of atmospheric nitrogen gas into reactive nitrogen such as ammonia, nitrogen oxide, and nitrous oxide. These types of bacterias are comprised of an enzyme known as the 'nitrogenase enzyme' that allows the nitrogen gas to mix with hydrogen and eventually produces ammonia.

This ammonia is then concentrated in the soil and is later taken up by the plants which are highly essential for them as they ammonia are their main source of nitrogen. This helps in the growth, development, and expansion of the overall plant body.

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how does the nervous system help the body maintain homeostasis? if it doesn't function correctly how does it affect the body?
Alchen [17]

Answer:

Homeostasis is maintained at many levels, not just the level of the whole body as it is ... Of course, body temperature doesn't just swing above its target value

6 0
3 years ago
How many organelles are in plant cells? please list them. :)
Murrr4er [49]
There are 11 organelles in total, 
vacuoles: they store water
Chloroplasts: trap energy from the sun to produce food for plant cell
Cell wall: provides support and protection to the cell membrane, 
Cell membrane: thin flexible barrier around a cell, controls what enters/ leaves the cell
Nucleus: 'The control center', carries the DNA of the cell
Ribosomes: Found in all cells, their jobs are to make protein 
Endoplasmic Reticulum: The internal delivery system of the cell
Golgi complex: Transports materials throughout the cell
Lysosomes: Break down food into particles the cell can use. another function is they destroy old or dying cells 
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3 years ago
24. Name two types of pathways that help a body maintain homeostasis, and an example of each.
gavmur [86]

Answer:

See the answer below

Explanation:

Homeostasis refers to the maintenance of relatively constant internal body processes. This is done in two ways

  • <em>Negative feedbacks</em>
  • <em>Positive feedbacks</em>

Negative feedback returns body processes back to normal after the process has been breached. An example is when the body temperature becomes too high or too low. At too high temperature, vasodilation of the skin's blood vessels occurs and more heat is lost to the surrounding from the skin, sweat is also produced by sweat glands and evaporation of the seat causes cooling. At too low temperature, vasoconstriction occurs leading to the conservation of more heat. The muscles also shake to generate more body heat

Positive feedback ensures that a breach of body processes reaches completion. An example is when a pregnant woman starts laboring. The increase in the amount of oxytocin in the blood leads to the contraction of the uterus consequently leading to the opening of the cervix. More and more oxytocin leads to more frequent and stronger contraction of the uterus untill the baby is born.

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