Which proteins initiate transcription in eukaryotes by recognizing sequences within the promoter region of a gene and attracts RNA polymerase?
A. repressors
B. transcription factors
C. inducers
D. poly-A tails
E. TATA boxes
B. transcription factors
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In the graph above, which baby characteristics would explain the percent infant mortality curve and any subsequent effects on fitness?
A. The baby needs to be small enough to survive after birth, but large enough for a safe delivery. B. The larger the baby the better the chance of survival. C. The smaller the baby the better the chance of survival. D. The baby needs to be large enough to survive after birth, but small enough for a safe delivery. E. There is no correlation between birth weight and survival.
The organelle responsible for harvesting light as an energy source for photosynthesis is the
A. kinetoplast. B. mitochondrion. C. centriole. D. chloroplast.
Insects have
a. simple eyes. b. ocelli. c. ciliary eyes. d. compound eyes. e. "camera" eyes
What is the main reason for using a cDNA library rather than a genomic library to isolate a human gene from which you wish to make large quantities of the human protein in bacteria?
What will be an ideal response?