The small dots found in bacteria cells often represent ribosomes, which are essential for protein synthesis. Ribosomes are the molecular machines that translate messenger RNA (mRNA) into proteins, playing a crucial role in the cell's metabolic processes. In prokaryotic cells like bacteria, these ribosomes are scattered throughout the cytoplasm and can also be associated with the cell membrane.
because they arn't as complex as a human cell
Bacteria cells are prokaryotic, meaning they lack a nucleus and membrane-bound organelles, while mammal cells are eukaryotic with a defined nucleus and complex organelles. Bacteria have a cell wall made of peptidoglycan, whereas mammal cells do not have a cell wall. Additionally, bacteria often have plasmids, small circular DNA molecules, in addition to their chromosomal DNA, which mammal cells lack.
A Eukaryotic cell does not have a flagellum.
Like archaea, bacteria are also single-celled organisms without nuclei.
Red blood cells are typically small, as they do not have a nucleus and are designed to maximize their surface area for oxygen exchange. Additionally, platelets are another type of small cell that are involved in blood clotting.
Cells that are small and have no nucleus are called prokaryotic cells. They are found in organisms belonging to the domains Bacteria and Archaea and lack membrane-bound organelles.
Bacteria have chromosomes that are not located within a nucleus (they don't have a nucleus). Chromosomes are normally found associated together in an area of the cell. Bacteria also have small circles of DNA called plasmids, these can sometimes be transferred between cells
because they arn't as complex as a human cell
Bacteria cells are prokaryotic, meaning they lack a nucleus and membrane-bound organelles, while mammal cells are eukaryotic with a defined nucleus and complex organelles. Bacteria have a cell wall made of peptidoglycan, whereas mammal cells do not have a cell wall. Additionally, bacteria often have plasmids, small circular DNA molecules, in addition to their chromosomal DNA, which mammal cells lack.
A Eukaryotic cell does not have a flagellum.
A) Bacteria B) Small intestinal villus cell C) Colonic cells D) Pancreas The correct answer is A) Bacteria
Cells, Bacteria, and Viruses
Like archaea, bacteria are also single-celled organisms without nuclei.
One key genetic difference is the presence of a nucleus in human cells, which bacteria lack. Human cells have linear chromosomes enclosed within the nucleus, while bacteria have a single circular chromosome located in the cytoplasm. Additionally, bacteria may have plasmids, small circular DNA molecules that are often absent in human cells.
Prokaryotes are organisms that are usually small single cells but some have multi-cells. Prokaryotic cells are archaea and bacteria with shapes that depend on species.
Bacteria cells are prokaryotic cells, meaning they do not have a nucleus or membrane-bound organelles. They are generally small in size and have a simple structure, typically consisting of a cell membrane, cytoplasm, and a single circular chromosome. Bacteria cells reproduce asexually through binary fission.
Extrachromosomal DNA in prokaryotic cells can be found in the form of plasmids, which are small circular DNA molecules that replicate independently from the chromosomal DNA. Plasmids can carry genes that provide bacteria with additional functions, such as antibiotic resistance or virulence factors.