Detritus: "Waste or debris of any kind" (thx google)
The answer relates to the medium in which the sensed molecules travel. On land, animals detect a scent through organic molecules transported in the air. Land animals will experience a taste sensation by grasping an object using their mouth. Here, the organic molecules providing the sensation are transported by saliva or organic fluids of the object. So on land, there is a clear distinction between molecules transported in the wind and those that can be tasted. Water is a much more dense medium than air, and can carry small and large organic molecules, unlike air. Therefore, aquatic animals have little need for olfactory organs as all molecules can be 'tasted' from the water.
Answer:
B) the anticodon of tRNA charged with methionine binds to mRNA associated with the small ribosomal subunit.
Explanation:
Translation:
Translation is the process occurring within living organism by which message from mRNA is translated into protein.
Eukaryotic translation consists of four phases: initiation, elongation, termination, and recycling
Here in this question discussion on Initiation is needed.
Translation initiation
Translation initiation in eukaryotes initiates when eukaryotic initiation factors (eIFs) assembles tRNA, 40S, and 60S ribosomal subunits at the initiation codon of mRNA into an 80S ribosome .
These eukaryotic initiation factors (eIFs) holds the mRNA in place and bind the 40S ribosomal subunit.
Correct Answer:
The tRNA anticodon charged with amino acid methionine binds to start codon AUG of mRNA associated with the small ribosomal subunit.
The lichens show mutualism and they are found in every biome of the Earth. The lichens have algae and fungus associated with them and they live in a mutualistic relationship with each other. Lichens can grow on soil where no other species can grow like rocks, barren soils and they enrich the soil on dying where other plants and trees can grow.
Lichens being pioneer species change the environment by building up the soil and liberating nutrients. Also the lichens contribute to the chemical weathering of the soil releasing phosphate along with erosion and weather conditions.
When the simple plants die, the wildflowers and other plants start growing replacing lichens or mosses.
From the above explanation it can be concluded that lichens alter the abiotic environment and favor other species of plants to grow by breaking down rocks from soil and providing nutrients.
