Pahoehoe. Pahoehoe is the second most abundant type of lava flow. Pahoehoe lava is characterized by a smooth, billowy, or ropy surface. Pahoehoe flows tend to be relatively thin, from a few inches to a few feet thick.In map-view the flows tend to be narrow and elongate.ther types of lavas include block lava, which has a surface of large angular blocks, and rhyolite lava. These two types are associated with lava chemistries other than basalt.
The major component of the bacterial genome is one double-stranded, circular DNA molecule.. Source: Biology, Sixth Edition Campbell and Reece.eptidoglycan is a polymer of interlocking chains called monomers. The b â¦ ackbone molecule is composed of two glucose derivatives (amino sugars) abbreviated NAM and NAG which are connected by interpeptide bridges.
Bacteria have a single chromosome, containing most of the cell's genes. Unlike humans, bacteria have no DNA apart from the genes. Some bacterial genetic information is in small rings of DNA called plasmids.n a human cell, most of the genetic information is stored in the nucleus, in certain segments of the chromosomes. About 1 or 2 per cent of the length of human chromosomes consists of genes.