1. Nucleus- present only in eukaryotic cells, this structure stores most of the genetic information of the cell. The nucleus directs the production of proteins through the synthesis of mRNA. 2.
Organelles as organism is from The Lives of a cell authored by Lewis Thomas. Thomas uses a unique writing style that is very recognizable and different from the others. This helps us to appreciate our diversity as human beings demonstrated by our abilities to write differently. As a reader one is able to form an image of who Thomas is by how he expresses his feelings and attitudes. When this text was written a lot of people, mostly scientists, thought and had knowledge of different things than they do now.
Cytoplasm is a specially organized solution of salt, nutrients, and complex molecules in water. The composition of cytoplasm may vary among different types of cells, but its purpose is the same – it provides a medium in which complex reactions can occur. For complex reactions to occur, cells need a source of energy.
The interesting question scientists raised is, can we relate to them? The answer is ‘yes’. For instance, the genes necessary to tell a plant whether it is light or dark, time cell division, and promote the proper functioning of the immune system are contained within the human genome as well. (Armstrong) “People have to realize that plants are complex organisms that live rich, sensual lives.” (Scientific American) Plants smell, taste, feel pain, have memory, and communicate.
The biochemistry is very similar through all organisms with each containing DNA made from adenine, thymine, guanine, and cytosine. First, the DNA is transcribed into mRNA. That specific RNA is then converted into an amino acid sequence by ribosomal RNA. The amino acid code makes up a polymer that ultimately becomes the protein that constructs the organism’s distinctiveness. That is how the given organisms establish their physiognomies.
These complex organisms consist of two organ systems, the root system and the shoot system. The shoot system is an above ground organelle system, this is where the leaves, stems, buds, flowers (depending on the plant) and fruits (depending on the plant) are found. Thus, therefore, meaning that the root system is the below ground system and includes the roots, rhizomes and tubers. There are three types of plant cells which are formed in the meristem (tissue in most plants that contain undifferentiated cells, the cells produced here help various organs of the plant and help with the growth of the plant.) The first plant tissue grouping is Dermal, the Dermal system looks after the covering of the plant, and can be broken down into many subsystems.
All eukaryotic cells are membrane-bound, containing cell organelles which are there for specific functions. The main two types of eukaryotic cell are animal and plant cells, which have some similar but some different cell organelles as they are needed for a range of different functions. They both share the organelles, the nucleus, plasma membrane, nucleolus, endoplasmic reticulum (rough and smooth), golgi body, lysosomes, mitochondria, ribosomes and cytoplasm. However plant eukaryotic cells contain chloroplasts and have a cell wall which animal cells don’t.
The nucleus control every cellular activity of the cell since it handles sending a blueprint of proteins required to be synthesized by the ribosome. The nucleus contains nucleolus responsible for synthesizing DNA and ribosome and controls all activities of the cell. 1.7 Bacterial Cell Structure Bacteria are the large microscopic group of organisms found in Kingdom Monera and are prokaryotic, unicellular living freely or as parasites. They are single celled lacking nucleus reproducing by spore formation or fission. They live in other organisms and normally cause diseases (harmful) but there are other bacteria beneficial to humans, these include bacteria located in the stomach and those aiding in
The DNA of eukaryotic cells are more complex and extensive. The organelle of eukaryotic allow them to
There are many structural differences between eukaryotes and prokaryotes that prove eukaryotes to be far more advanced than prokaryotes. The “focal point” for this assignment is on both types of cells and exploration of their structures proving why eukaryotes are more progressive than prokaryotes. The variance among the structures of prokaryotes and eukaryotes is considered to be the most important distinction between groups of organisms. The major difference between eukaryotes and prokaryotes is that eukaryotes have their DNA contained within a “TRUE” nucleus, while the genetic material in prokaryotes is not membrane-enclosed. The nuclear membrane is important as it provides protection for the genetic material; it also provides protection against Ultraviolet light, which in turn allows them to be in the sunlight.
The mitochondria job is to produce power to the cell which is why it has its well known nickname. Next let's go with the ribosomes, the ribosomes have the important function of reading coded messages that allow reproduction. The cytoplasm has the role of filling the empty
Plant and Animal Cells can be similar in a lot of different ways. However Plant and Animal cells can also be different and also be very different in a lot of ways. Some ways that Plant and Animal Cells are alike is because they both have a Nucleus, Nucleur membrane, and a Nucleolus. Likewise they also both have ribosomes, golgi bodies, cytoplasm, mitochondria as known as the powerhouse of the cell, cell membrane, vacuole, and a cromation. In addition they both have a smooth and rough endoplasmic reticulum.
Thus they are both intracellular and extracellular. 1. Lysosome cell organelle has
Plant cells and animal cells both have some things that are in common and some things that are not in common. Animal cells are eukaryotic just like plant cells. They also both have a cell membrane, cell organelles, nucleus, mitochondria,and an endoplasmic reticulum. Even though they have some things in common they also have some things that are not so in common. An animal cell has a cell wall and a plant cell does not.
The area which contains the receptor- ligand complex goes through endocytosis by becoming a vesicle. Among common ligands which most vertebrates
