Prokaryotes are single-celled organisms that have a developing nucleus and lack membrane-bound organelles. They are often too small to be seen by the naked eyes.Answer and Explanation: Many prokaryotes have an extra layer outside the cell wall, which is called a capsule. The capsule protects...
Some eukaryotes, like amoebae, are free-living, single-celled entities. Other eukaryotic cells are part of multicellular organisms. For instance, all plants and animals are made of eukaryotic cells — sometimes even trillions of them (Figure 4). Figure 4: Comparing basic eukaryotic and ...
All organisms are made up of cells. They may be made up of a single cell (unicellular), or many cells (multicellular). Mycoplasmas are the smallest known cells. Cells are the building blocks of all living beings. They provide structure to the body and convert the nutrients taken from the...
What organelles are cellular structures were common to all the different organisms looked at with the microscope? What do centrioles in animal cells do? List and briefly describe the organelles contained within the cytoplasm of the cell. What organelles can be found in both a single-celled ...
Do eukaryotes have plasmid DNA in cytoplasm? DNA in a nucleus, plasmids are found in a few simple eukaryotic organisms. DNA is a single molecule, found free in the cytoplasm; additional DNA is found on one or more rings called plasmids. Where is DNA found in a prokaryotic cell? The DNA...
single-celled eukaryote ingested a cyanobacterium, and instead of digesting it, retained it as an active intracellular symbiont. Over thousands of generations, this "captured" cyanobacterium became reduced to a specialized organelle, the chloroplast. All photosynthesis in green plants and algae occurs ...
Single-Celled Perhaps the most straightforward characteristic of bacteria is their existence as single-celled organisms. While most bacteria, archaeans and eubacteria alike, spend their entire microscopic life cycle as independent single cells, some such as the soil-dwelling myxobacteria will form multic...
Euglena areneither plants nor animalsdespite the fact that they have characteristics of both. Given that they cannot be groups under either the plant or the animal kingdom, Euglena, like many other similar single celled organisms are classified under the Kingdom Protista. ...
Single-celled animals preyed on cyanobacteria. Some of these tiny plants were not digested and lived on in the animal cells, eventually giving rise to chloroplasts. But these first eukaryotic plants were soon consumed by other animals, which hijacked the precious chloroplast, just like Elysia. And...
Living things form an organized structure known as cell. They may be a single celled organism, such as a bacterial cell, or multicellular organisms such as animals and plants. A cell is the fundamental unit of life. It consists of protoplasm surrounded by a plasma membrane and the cell organ...