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.
Answer: C. The population size became limited due to factors such as availability of food.
Explanation:
Out of all the choices, C is the most likely to happen since more often then not, food runs out because a species has too many members. C is an example of the environment’s carrying capacity limiting the chipmunk species.
Since we are not told if the chipmunk population is really small, interbreeding may not happen. Predators hunt prey, not eat fruits like chipmunks do (I’m assuming what chipmunks eat.) If there was a predator species that came in, they would hunt the chipmunks instead of competing for the same resources. D just doesn’t make much sense in my opinion because that wouldn’t limit the chipmunk population.
Answer:
This question is incomplete as there is no figure in the question but the compound in the figure is Ethanoic acid (CH3COOH). Hence, we can calculate the mass.
The answer is: 30grams
Explanation:
According to the question, the volume of the compound (CH3COOH) is 1litre while the molar concentration is 0.5M
Molarity or Molar concentration is calculated using the formula:
M= n/V
Where; M= Molarity (M) = 0.5M
n= number of moles (mol)
V= Volume (V) = 1L
Hence, number of moles (n) = M × V
n = 0.5 × 1
n = 0.5 moles.
To calculate the mass in grams of CH3COOH, we say;
Number of moles (n) × molar mass (MM)
Since atomic mass for (C= 12, H= 1 and O=16)
Molar mass of CH3COOH:
= 12 + 1(3) + 12 + 16 + 16 + 1
Molar mass of CH3COOH = 60g/mol
Mass (in grams) of CH3COOH = 0.5 moles × 60g/mol
Mass = 30grams.
Therefore, 30grams of CH3COOH compound are required to make 1 liter of a 0.5 M solution.
Answer:
DNA replication
Explanation:
this is when the DNA strands get exactly replicated.
its the same thing
Let me know if this helps!
Somatic. have a good day.
