male gametes (sperm cells). pollen grains have a hard coat made of sporopollenin that protects the gametophytes during the process of their movement from the stamens to the pistil of flowering plants, or from the male cone to the female cone of coniferous plants . if pollen lands on a compatible pistil...
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how lp b and lp b are created in the endoplasmic reticulum of enterocytes and hepatocytes. acat is responsible for converting free cholesterol into cholesteryl ester (ce), while mttp is responsible for uploading ce and triglycerides into b - or b -lipoproteins. clinician's knowledge of lp b and lp b...
years, but it typically requires researchers to break cells apart to get at the genome — and breaks up the genome in the process. the new method leaves the cell whole, enabling researchers to map the dna's natural geometry....
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