Answer:
The correct answer is a. Exon/intron boundaries are typically characterized by a 5' GU splice junction and a 3' AG splice junction.
Explanation:
Splicing is the process in which the non-coding introns are removed from the mRNA and only coding sequences remains in mRNA.
The splicing of introns depends on the recognition of splice site pair. Usually, 5'-GU-3' is 5' splice site and 5'-AG-3' is 3' splice site which makes the boundary of introns/exons and these two nucleotides are important to recognize the introns.
There are some additional conserved sequence at these two splice site which help in recognition of introns. First, a lariate structure is formed when 5'-GU-3' is cleaved and joined to the branch point that is present near 3' slice site. Then 3' splice site is cleaved which releases the intron. Therefore the correct answer is a.
Answer:
The correct answer is - part F.
Explanation:
In this image, Part F is a mirror or light source of the compound microscope as it is used to reflect the light come from any type of light source either sunlight or lamps as a light source. In some compound microscope, there is an illuminator instead of a mirror as a light source.
It is found at the bottom of the stage and can be adjusted to reflect the light directly to the specimen.
Thus, the correct answer is - Part F.
1)Conserve energy - at home, at work, everywhere.
2)Look for the ENERGY STAR label when buying home or office equipment.
3)Carpool, use public transportation, bike, or walk whenever possible.
4)Follow gasoline refueling instructions for efficient vapor recovery, being careful not to spill fuel and always tightening your gas cap securely.
5)Consider purchasing portable gasoline containers labeled “spill-proof,” where available.
6)Keep car, boat, and other engines properly tuned.
7)Be sure your tires are properly inflated.
8)Use environmentally safe paints and cleaning products whenever possible.
9)Mulch or compost leaves and yard waste.
10)Consider using gas logs instead of wood.
Answer:
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