introduction According to the oxford dictionary the definition of Slime mold is a simple organism of an acellular mass of creeping jelly like protoplasm containing nuclei or mass of amoeboid cells. When it reaches a certain size it forms a large number of spore cases and was formally considered in the kingdom of fungi, however it is now classified in the Protista kingdom because, like other protists, they really don 't fit in with other kingdoms. They are motile like animals but some are unicellular so they cannot be classified as animals. There are several types of Slime Molds. Plasmodial slime molds (such as Physarum polycephalum) are slime molds that form giant, multinucleated cell colonies.
A virus is a type of microbe that consists of two parts: a small genome of either single-stranded or double-stranded DNA or RNA, and a protein coat called a capsid which protects the genome. It is debatable whether or not viruses are living organisms because of their structures and functions; however, according to the characteristics of what makes an organism truly living, including nutrition, respiration, movement, excretion, growth, reproduction, and homeostasis, viruses are not actually alive (Kadhila). Because of their simple structure, it is possible that viruses could be the basis of modern cells, but their lack of basic characteristics, such as respiration, reproduction, and movement, means they cannot possibly be living creatures. Respiration is the process by which an organism creates energy that it can use for various processes. An organism can obtain the organic molecules it needs to produce its energy either through autotrophy or heterotrophy.
Earthworm and Bullfrog comparison 1/14/2018 Dissecting the Animal Kingdom pd 7 pg1 The organisms i will be comparing are the Earthworm and the Bullfrog, the Earthworm is part of the phylum Annelid and the Bullfrog is part of the Phylum Chordate. The earthworm is a invertebrate and the Bullfrog is a vertebrate. This means that the Earthworm does not have a skeletal structure in its body but a bullfrog does. A key characteristic of both the animals is that they have bilateral symmetry. This means that that you could basically split both of the animals in half and both sides would be the same because they are bilaterally symmetrical, both halves of the body are identical.
This organelle can be found both on the rough ER and free in cytoplasm, but the proteins produced in each place have different functions; proteins produced in the cytoplasm are typically used within the cell while proteins produced by the rough ER are usually exported outside the cell. The ribosomes themselves are produced in nucleolus and cells that need a lot of protein have a lot of ribosomes . With larger diameters than microfilaments, microtubules are stiff organelles that help maintain the cell 's shape as part of the cytoskeleton. The cytoskeleton is the structure within the cytoplasm of the cell that helps move organelles inside the cell, therefore microtubules are attributed with the function of intracellular movement . In addition to the cytoskeleton, microtubules also make up the cilia and flagella of the cell.
Cells, the smallest unit of life, make up all living organisms. Humans are made up of over a trillion cells; red blood cells, white blood cells, skin cells, and more, are all a part of what composes the human body. But, cells also make up the body and structure of bacteria, archaea, protists, fungi, plants, and animals. They can be comprised into two different categories: the eukaryotic cells and the prokaryotic cells. Eukaryotic cells have membrane-bound organelles and a membrane-bound nucleus, while prokaryotic cells have no membrane-bound organelles and no membrane-bound nucleus.
They are still found today everywhere and have successfully evolved to still survive. Bacteria is where all the other kingdoms branch off from. Though Bacteria and Archaea are both prokaryotes, their genes are less than half related. Bacteria have its pros and cons for life on earth as some of them are good for the environment such as, food production, medicines, pest control, and etc. However, the cons are they can cause diseases, pathogenic, and etc.
In conjugation the two bacterial cells connect, and the male donates a piece of DNA to the female. The piece of DNA was excised from a bacterial chromosome. The pieces are called plasmids. Plasmids are like viruses in that they pass out of one cell and into another, but they have no protein coat or "life cycle" differing from that of their host cell. Transduction: In transduction, a virus takes a piece of DNA from the bacterial host and incorporates it into its viral genome.
What is a virus? A virus is, “an infectious disease that is capable of growth and multiplication only in living cells, and that cause various important diseases in humans, animals, or plants” (“Virus”). In simple terms, this means that it is something that attacks an organism’s cells, takes over the healthy cells and creates more infected cells in return. In general, the main difference between a bacteria and a Virus is; bacteria can thrive on its own without a living host, while a virus needs a living organism to live in. Understanding how a virus works will make the Zika virus much easier to comprehend.
Bacteria is one of the first life forms that appeared on Earth, and that today lives essentially in all environments of the world whether an individual is aware or not. It takes many different shapes, but the most common are spiral, rod and spheres. Bacteria cannot be viewed with the naked eye; instead you need a microscope and are extremely small measuring in at 0.2um in diameter and 2-8 um in depth. In the science world bacteria is among the topics of controversy and many question if in fact bacteria is alive, or if it has life. At the end of the day bacteria will gain nutrients, reproduce and survive, making it a live organism and heartless when it comes to the people that it will cross.
It is only used for moving forward in prokaryotic cells, whilst in eukaryotes these flagella are made up of many filaments which thus make them far more complex in structure and for only just movement like in eukaryotes. These eukaryotic flagella also have microtubules in them which stretch far longer than their own length. The cytoskeleton of eukaryotes has many functions. One of them is served in prokaryotes by the cell wall. These very different structures have the same function.