Why is only a fraction of an organism's genes represented in any cDNA library?
What will be an ideal response?
cDNA libraries are comprised of complementary DNAs that are reverse transcribed from existing mRNA transcripts. Thus, only genes that are being actively transcribed in a given organism will be represented in the cDNA library, providing an accurate snapshot of the genes being expressed in this particular organism or tissue.
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An increase in blood glucose levels will lead to which of the following?
A. increased insulin production B. breakdown of glycogen in the liver C. increased glucagon production D. breakdown of glycogen in the muscles E. All of the answer options are correct.
Joints like the hip and shoulder are classified as ____
a. synovial joints b. fibrous joints c. membranous joints d. cartilaginous joints e. hinge joints
The region of a chromosome where two sister chromatids are held together is called a
A.) Spindle B.) Centromere C.) Nucleosome D.) Centriole
Which of the following is a feature shared by viruses and living organisms?
A. possession of a genome that directs synthesis of materials necessary for replication B. presence of cytoplasm C. metabolic capability D. responsiveness E. the ability to increase in size