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In a DNA extraction, alcohol allows us to isolate DNA because

Explain ONE of the following:A) How telomerase extends the ends of chromosomes. Be sure to describe the role telomerase, the RNA within the telomerase, and how both strands of DNA are lengthenedB) How the poly-A tail is added to the end of the mRNA. Be sure todescribe the role of the consensus sequence, the cleavage site, RAT1, and polyA polymeraseC) How introns are removed from pre-mRNA. Be sure to describe the snRNPsand explain the role of their RNAs, explain where the consensus sequences are and their role. Describe the shape the intron forms as it is removed.

Why do telomeres shorten each time DNA is replicated?

Which is the nitrogenous base?

What kind of bond connects the two strands of DNA to each other?

Below is a picture of a nucleotide with letters indicating the various parts. Use this picture for the next few questions. Which letter is labeling the deoxyribose sugar?

Which of the following enzymes is responsible for fixing errors (wrong bases) added in DNA replication? (choose all that apply)

If I am studying how transcription is activated in a particular yeast gene, I am studying the field of

Animal cells exhibit turgor pressure when placed into a hypotonic solution.

What is the dark purple tissue at the top of this image?