Gap1 of the cell cycle represents the time when the cell is doing what it is supposed to do as part of its cell type. In other words, that is when a liver cell is doing its function as a liver cell.
a. true
b. false
Ans: a. true
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Which of the following reflects sequence elements conserved in pre-mRNA splice sites?
A. CTAG at the 3' end of the 5' exon B. GAAG at the 3' end of the intron C. AG at the 5' end of the intron D. G at the 5' end of the 3' exon
Which two proteins are found in tight junctions?
a. globulins and keratin b. histone and hemoglobin c. claudins and occludins d. cadherins and adhesins
The letter “D” in the above figure represents
a. a kidney. b. a urethra. c. a urinary bladder. d. a ureter. e. water.
Based on the accompanying figure, which two present day continents should have the most closely related plant and
animal species? a. Eurasia and India b. Australia and India c. Africa and Australia d. North and South America e. Africa and South America