Sentences with phrase «simple organism lacking»
Not exact matches
The consensus on the evolution of primitive life is that simple life forms (prokaryotes, organisms whose cells lack a distinct nucleus) inhabited the Earth about 3 - 4 billion years ago, eukaryotic cells (those with a nucleus which contains the genetic material) emerging 2 - 3 billion years ago.
http://www.faith.org.uk/
The sea sponge may seem like an odd choice for genomic research considering that its simple body lacks muscles, organs, and nerve cells, but the creature provides a wealth of information on how multicellular organism arose.
Most are microscopic and unicellular, with a relatively simple cell structure lacking a cell nucleus, and organelles such as mitochondria and chloroplasts.Bacteria are the most abundant of all organisms.
It also lacks the energy - generating mitochondria present in most living things and digests food with fermentation enzymes found only in bacteria and other very simple single - celled organisms.