Within eukaryotic cells, the ____ is surrounded by a double membrane and carries the coding that determines protein synthesis.
Fill in the blank(s) with the appropriate word(s).
Ans: nucleus
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A specimen has been prepared for viewing with a transmission electron microscope, using uranyl acetate as a negative stain. The area stained by the uranyl acetate will be ________ electron dense compared to specimen itself.
A. more B. equally C. less
During the replication of DNA, DNA polymerase has to synthesize the daughter strand in the 5' to 3' direction because DNA polymerase can only join nucleotides to the 3' end of the growing new strand.
Answer the following statement true (T) or false (F)
To which amino acid is nitric oxide added, altering the activity, turnover and/or interactions of proteins like hemoglobin, Ras, ryanodine channels and caspases?
a) methionine b) cysteine c) asparagine d) phenylalanine e) alanine
A human female with only one X chromosome is said to have a condition called
A. Turner syndrome. B. Klinefelter syndrome. C. Down syndrome. D. Angelman syndrome. E. X chromosome inactivation.