4. Which or which (can select more than one alternative) of the control methods of genetic expression in eukaryotes NOT USED in prokaryotic cells?to. control how often a gene is expressedb. control how an mRNA is processedc. control which mRNA is exported from the nucleus to the cytosold. control which mRNA is translated to proteins in the ribosomeand. control how quickly proteins are destroyed once synthesized 5. Unlike DNA that usually forms a helical structure, different RNA molecules assume bends in a wide variety of 3D shapes. This is due to :to. RNA contains uracil and ribose as sugarb. the bases in the RNA cannot form hydrogen bonds with each otherc. nucleotides in RNA have a different chemical structure than they have in DNAd. Although RNA is single-stranded, complementary bases can pair with each other. 6. Viruses consist of a layer of protein that surrounds your genetic material. the genetic material in the HIV virus is:to. Double-stranded DNA (dsDNA)b. Single-stranded DNA (ssDNA)c. Double-stranded RNA (dsRNA)d. Single-stranded RNA (ssRNA) 7. If two bands corresponding to the 28S and 18S ribosomal unit are obtained in one of the lanes of a gel electrophoresis, there must be a sample of:to. DNAb. RNAc. protein
4. Which or which (can select more than one alternative) of the control methods of genetic expression in eukaryotes NOT USED in prokaryotic cells?
to. control how often a gene is expressed
b. control how an mRNA is processed
c. control which mRNA is exported from the nucleus to the cytosol
d. control which mRNA is translated to proteins in the ribosome
and. control how quickly proteins are destroyed once synthesized
5. Unlike DNA that usually forms a helical structure, different RNA molecules assume bends in a wide variety of 3D shapes. This is due to :
to. RNA contains uracil and ribose as sugar
b. the bases in the RNA cannot form hydrogen bonds with each other
c.
d. Although RNA is single-stranded, complementary bases can pair with each other.
6. Viruses consist of a layer of protein that surrounds your genetic material. the genetic material in the HIV virus is:
to. Double-stranded DNA (dsDNA)
b. Single-stranded DNA (ssDNA)
c. Double-stranded RNA (dsRNA)
d. Single-stranded RNA (ssRNA)
7. If two bands corresponding to the 28S and 18S ribosomal unit are obtained in one of the lanes of a gel electrophoresis, there must be a sample of:
to. DNA
b. RNA
c. protein
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