the enzyme Picture above is necessary in the process of DNA replication breaks down the hydrogen bonds found between the nucleotides that hold the two DNA strands together identify the enzyme. A. single strand binding protein B. helicase C. endonucleus D. dna polymerase

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

The part of the eye that closes and opens to let light in is .