In case of mammalian fertilization slow block to polyspermy occur when enzymes released by the cortical granules modify the zona pellucida sperm receptor proteins such that they can no longer bind sperm. such enzyme is known as____

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#Question id: 33912

#Unit 2. Cellular Organization

A. When a DNA molecule is negatively supercoiled, it is underwound. 

B. Any structural change involving DNA strand separation becomes more likely in negatively supercoiled DNA. 

C. Negative supercoiling makes establishment of left-handed Z-DNA in a segment of DNA 

D. The formation of plectonemic or solenoidal supercoils is favored as a means of negative supercoiling.

Find true and false

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#Question id: 15262

#Unit 2. Cellular Organization

A media which makes easier to distinguish colonies of the desired organism from other colonies growing on the same plate.

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#Question id: 4005

#Unit 3. Fundamental Processes

Which does not apply to the post-transcriptional processing of ribosomal RNA?

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#Question id: 26577

#Unit 3. Fundamental Processes

Which of the following codon shows most variability in terms of reading

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#Question id: 18892

#Unit 13. Methods in Biology

The greatest resolution in light microscopy can be obtained with