Which of the cells below develop into a human embryo?
A. Trophoblast
B. Extraembryonic
C. Inner cell mass
D. Blastcoel
Ans: C. Inner cell mass
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What is the function of the ? subunit of E. coli RNA polymerase in transcription?
A. It contains the polymerase active site. B. It contains the separate exonuclease site required for proofreading. C. It directs the polymerase to bind a specific type of promoter sequence. D. It signals the polymerase to terminate transcription at specific sites. E. It allows template-independent RNA synthesis.
Which type of microscopy transforms the subtle variations in cell density into differences in light intensity, allowing for increased internal detail without staining?
A. Confocal B. Bright-field C. Phase-contrast D. Fluorescence E. Electron
If the DNA from a crime scene matches a suspect’s DNA at four different loci, what should be
concluded if the DNA does not match the suspect’s DNA at a fifth locus?
What will be an ideal response?Describe the difference between hemodialysis and peritoneal dialysis
What will be an ideal response?