What are the big differences between eukaryotic (nuclear) and prokaryotic genomes?  How do prokaryotic genomes compare to the genomes found in eukaryotic organelles? Why?

a)  5 nuclear RNA polymerases   b)  3 nuclear RNA polymerases . c)  6 nuclear RNA polymerases   d)  none of these is true Eukaryotic cells contain ___________________ that transcribe distinct classes of genes.

What is a bacterial nucleoid? With regard to cellular membranes,what is the difference between a bacterial nucleoid and a eukaryotic nucleus?

1)  Where in the heck did Class I transposons originate?   a DNA mutations. b Bacteria. c Prophages. d Retroviruses.   2)  What do you think about humans only having about 22,500 genes but we contain about 100,000 proteins?!   a The production of quaternary shape in proteins can contribute to protein variation. b That's the work of the spliceosome! c Post-translation modifications in the Golgi Apparatus are responsible for some of that. d All the answers are correct.

If the following nucleotide sequence, CTC/TGT/AAG/ACC/TTT experienced a mutation resulting in the deletion of the second cytosine in the first DNA triplet so the sequence is now CT_/TGT/AAG/ACC/TTT, what would be the amino acid sequence created from this mutated DNA strand? Table of mRNA codons UUA, UUG = leucine AGG, AGA = arginine %3D CAU, CAC = histidine GUU, GÜC, GUA = valine GAA. GAG=glutamic acid GCU, GUA, GUG = alanine GAU, GAC = asparagine GGU, GGC, GGA = glycine UCA, UCU =serine CGU, CGC, CGA = arginine

1. how is information from the DNA passes on from one cell to another?2. How does the structure of a DNA molecule hellp account for the great variety of life that exists on earth?3. Does your mRNA model more closely resemble the DNA strand from which it was transcribed?4. Explain how the structure of DNA enables the molecule to be easily transcribed. Why it is important for genetic information?5. Why is RNA important to the cell?6. How does the mRNA molecule carry information from DNA?

You purified the genome of the coliphage X174. After analysis, you find that its composition is 25 percent A, 33 percent T, 24 percent G, and 18 percent C. Based on this finding, which of the following prediction would you make for the coliphage $X174? The genome of coliphage X174 is double-stranded DNA. The genome of coliphage X174 is single-stranded DNA. The genome of coliphage X174 is single-stranded RNA. The genome of coliphage $X174 is double-stranded RNA. Previous Page Next Page Page 9 of 30

Is it possible for their to be a mutation where an individual has incomplete or missing sets of chromosomes? or Would that simply result in the loss of life? I would say an easier way to describe a genome is by calling it either a blueprint of DNA or referring it as one full set of genetic information.

You have sequenced the genome of the bacterium Salmonella typhimurium and find a protein that is 100 percent identical to a protein in the bacterium Escherichia coli. When you compare nucleotide sequences of the S. typhimurium and E. coli genes, you find that their nucleotide sequences are only 87 percent identical. How would you interpret the observations? Please make sure to select ALL correct answer options. Because genetic code is redundant, changes in the DNA nucleotide sequence can occur without change to its encoded protein. Due to the flexibility in the third positions of most codons, the DNA sequence can accumulate changes without affecting protein structure. Natural selection will eliminate many deleterious amino acid changes. This will reduce the rate of change in the amino acid sequence and lead to sequence conservation of the proteins. Protein sequences are expected to evolve and diverge more slowly than the genes that encode them.

Neema wants to determine whether or not the nucleus of a cell differs in the chemical compounds they contain or not from species to species.  She is planning on working with the nucleus of a human and the nucleus of a mouse.  She has removed all of the DNA from each nucleus, then has selected and isolated one DNA fragment from each species.  What results can Neema expect if she takes the human DNA fragment and inserts it into the mouse nucleus and then inserts the mouse DNA fragment into the human nucleus?  Use your knowledge of DNA replication to answer.