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Gelneren [198K]
2 years ago
11

Biology CELLS AND ORGANELLES FRQ..

Biology
2 answers:
andreyandreev [35.5K]2 years ago
6 0

1. Cell wall ( maintain structure and support)

2. centrioles ( aids in cell division)

Salsk061 [2.6K]2 years ago
3 0

Answer:

a) cell wall - maintains structure and support

b)  centrioles - aids in cell division

Explanation:

hope this was helpful

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What is the main cause of poor health in developing countries
Taya2010 [7]

Answer:

Having no medical.

Explanation:

If you have poor health in a developing country then there is no medical. Idk hope this helps!

7 0
3 years ago
Beyond their role in energy transfer, what other benefit do microorganisms that act as producers provide for ecosystems?
insens350 [35]

Answer:

The microorganisms present metabolic wastes that serve as the primary source of food for other living things.

Bacteria that live free in the soil or in symbiosis with plants are essential to fix nitrogen, both nitrates and ammonia. These bacteria take nitrogen directly from the air, originating compounds that can be incorporated into the composition of the soil or living beings.

This property is restricted only to prokaryotes and is widely distributed among different groups of bacteria and some archaeobacteria. It is a process that consumes a lot of energy that occurs with the mediation of the enzyme nitrogenase, which the rest of the living organisms that cannot do or comply with this process is because they lack said enzyme.

Dunaliella is a genus of microscopic algae of the Chlorophyceae class and of the order Volvocales. All are unicellular, although with very varied morphologies.

Morphologically, its main characteristic is that they lack a rigid polysaccharide cell wall.

The ecology of this genus of green algae is characterized by its high tolerance to salinity, with eukaryotic organisms having greater tolerance to salt. They are euryhaline, adapted to salt concentrations from 50 mM NaCl to almost 5.5 M NaCl.

Explanation:

By nitrogen fixation is meant the combination of molecular nitrogen or dinitrogen with oxygen or hydrogen to give oxides or ammonia that can be incorporated into the biosphere. Molecular nitrogen, which is the majority component of the atmosphere, is inert and not directly usable by most living things. Nitrogen fixation can occur abiotic (without the intervention of living beings) or by the action of microorganisms (biological nitrogen fixation). Fixation in general involves the incorporation into the biosphere of a significant amount of nitrogen, which globally can reach about 250 million tons per year, of which 150 correspond to biological fixation.

6 0
3 years ago
Humans conduct _____.
IrinaK [193]

Hello

Humans conduct internal fertilisation.

Thanks

5 0
3 years ago
What is acid rain and how is it a problem to oceans, rivers, lakes, ponds, etc.
amid [387]

Answer:

Any form of precipitation like rain, snow, fog, hail, and even dust that has acidic components. When the acidity of a lake  increases, the water becomes clearer and the all the animals decrease.

Explanation:

4 0
3 years ago
Which of the following do scientists use to reinforce the integrity of their scientific investigations and reported data? I. exp
MissTica
Publication in journals
you see that a lot today
<u>Hugs ~L</u>
4 0
3 years ago
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