Looks like a christmas tree.
Each rRNA gene is surrounded by growing RNA chains.
<span><span> The new RNA that just got synthesized is spread out on either side of the gene being transcribed. </span>The first transcripts are shorter but as the transcription progresses along the gene, they get longer and longer, that's why it looks like a Christmas tree.</span>
Stomata close when the vacuoles in the guard cells fill with water and the cells become turgid. The environmental stimulus that causes this response is the change from light to dark. During the day, heat from the sun causes evaporation in the leaves, which leads to water loss from the leaves, by way of the stomata, in a process known as transpiration. At night, the absence of the sun's heat slows the rate of evaporation, causing the vacuoles in the guard cells to fill with water by way of osmosis, causing the guard cells to become turgid and seal off the stomata.
The answer is A. organism, species, community.
Organizational hierarchy is the hierarchy of complex biological structures. From least complex to most complex the order is as following:
atom, molecule, organelle, cell, tissue, organ, organ system, organism, population, species, community, ecosystem, biome, biosphere.
So, A is the right choice:
Organism is the basic living system. The higher level is species - a group of organisms that are able to reproduce. The higher level is community - an interspecific<span> group that includes interacting populations.</span>
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the plant cell when placed under hypertonic medium,it loses a great amount of water and its cell membrane detaches from the cell wall.in this situation the cell is called plasmolysed cell.when the plasmolysed cell is placed in hypertonic medium it absorbs water and becomes a turgid cell.this phenomenon is called deplasmolysis.</span>
