Answer:
The Earth's movement through space affects life on Earth
Explanation:
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Answer:
There are limits on the size of structures such as cells that depend on diffusion to interact with the environment.
Explanation:
There are limits on the size of structures such as cells that depend on diffusion to interact with the environment. As cell volume increases, the area of the cell membrane does not keep relative pace. ... So the reason there are no huge cells is that therer is a limit to their size because of the surface area/volume ratio.
Answer:
First off, grab a simple magnet and hold it near your precious metal coin. If the coin is even slightly attracted to the magnet, then you know you have a fake on your hand, as metals with contents of iron and steel are the most likely to be attracted
The excessive use of water for irrigation in dry climates, with heavy soils, causes salt accumulation because they are not washed out by rainfall. The practice of waterlogging without adequate drainage has also become a serious cause of soil salinization .
Complete question:
Question: In prokaryotes, genes can exist as operons that are transcribed into a polycistronic mRNA, containing multiple genes in a single transcript. In eukaryotes, transcripts exist only as monocistronic mRNA containing a single gene. What fundamental genetic difference is responsible for this distinction?
(A) mRNA is transported outside of the nucleus in eukaryotes.
(B) Prokaryotic mRNA has a five-prime GTP cap.
(C) Prokaryotes use a single start codon for multiple genes.
(D) In eukaryotes, each gene has its own transcription initiation site
Answer:
(D) In eukaryotes, each gene has its own transcription initiation site
Explanation:
Eukaryotic mRNAs are monocistronic in nature which means that one mRNA carries the single transcript to be encoded. Each monocistronic mRNA is encoded by a stretch of a gene that has a specific initiation site to start the process of transcription. On the other hand, prokaryotes have some mRNAs that carry the code for two or more different polypeptides. These mRNAs are called polycistronic. For a polycistronic mRNA, multiple transcripts are transcribed under the single transcription initiation site.
