Freebase(0.00 / 0 votes)Rate this definition: Bollard. A bollard is a short vertical post. Originally it meant a post used on a ship or a quay, principally for mooring. The word now also describes a variety of structures to control or direct road traffic, such as posts arranged in a line to obstruct the passage of motor vehicles.
Which of the following events occurs directly after a DNA molecule is unzipped? A. Mismatched nucleotide bases are identified and replaced. B. Free-floating nucleotides pair up with exposed bases.hich of the following events occurs directly after a DNA molecule is unzipped? A. Mismatched nucleotide bases are identified and replaced. B. Free-floating nucleotides pair up with exposed bases.
Which of the following statements is true about DNA? a) At the beginning of protein synthesis, a section of a DNA molecule unwinds and unzips. b) All of our DNA is normally located in the nucleus of our cells.). When a section of a DNA molecule unwinds and unzips along its bases, a transfer RNA forms by copying one side of the DNA. b). The transfer RNA leaves the nucleus and goes out to the ribosomes in the cytoplasm where proteins are assembled with the help of messenger RNA.