Relebogile Moloko 1155553 Introductory life sciences Assignment 1 Prokaryotes and eukaryotes are two different levels of cells. Prokaryotes are cells that do not have a membrane bound nucleus or organelles sounded by membranes and eukaryotes are cells that have a membrane bound nucleus as well as membrane bound organelle. They have obvious structural differences which result in differences functions and cell efficiency. From my research, I have observed that eukaryotes have structural advantages over prokaryotes. This essay will be discussing the differences in the two cells with reference to the metabolic processes and storage of genetic information.
Cell function as tiny specific factor with individual part that work together. Then what makes is present inside the cell that makes the cell alive and in turn, keeping the organism going? It is definitely the organelles! What are organelles? Organelles are membrane-bound, specialized subunits within a cell that have a specific function.
Whilst it is very successful at this, and is in most cases necessary to the plant, the very mechanism by which it reproduces (mitosis) does not result in much genetic variation. Should an environmental change come along for which the species is not adapted, it is likely that it will be wiped out entirely. This is because none of the individuals have developed any mutations or genetic adaptations that allow them to survive in that
1). The epidermis contains no blood vessel sand is nourished entirely from tissue fluid emanating from the inner (deeper) vascularized skin tissue known as the dermis. The dermis is derived from mesoderm and contains the nutrient- providing blood vessels. Each of the two primary layers of skin has structurally distinct sublayers
Zygomycota Structure - They have Cell walls which are made of chitin-chitosan. Zygospore which are mature has thick walls. Description - In the kingdom of fungi they are very small group and they are the Phylum Zygomycota.They can reproduce asexually or sexually with the help of process cis a classification that encompasses many dialled conjugation.In the classification of Zygomycota you can see many dfferent species and they all have a genome structure which are different. Characteristics - They can reproduce asexually or sexually with the helps of a process known as conjugation.They are mold which is found on the surfaces of breads, fruits, and vegetables. They live in soil or on plants and animals.
Cellular level – which is the smallest unit of living matter (combined of cells). Every type of cells transmits various tasks inside the human body regardless of their common functions, each
Chromatin is its loosest, least-organized form, which floats freely around inside the nuclear envelope. Chromatids are formed from condensed chromatin and are one-half of each chromosome. In its complete form, two identical “sister chromatids” are joined together by a centromere to form a full chromosome. To begin with, mitosis and meiosis are vastly different. Cells are either diploid or haploid.
Assignment unit 3 1. Unlike prokaryotic cells, eukaryotic cells have: 1) a membrane-bound nucleus; 2) numerous membrane-bound organelles such as the endoplasmic reticulum, Golgi apparatus, chloroplasts, mitochondria, and others; and 3) several, rod-shaped chromosomes. Because a eukaryotic cell’s nucleus is surrounded by a membrane, it is often said to have a “true nucleus.” The word “organelle” means “little organ,” and, as already mentioned, organelles have specialized cellular functions, just as the organs of your body have specialized functions. At this point, it should be clear to you that eukaryotic cells have a more complex structure than prokaryotic cells. Organelles allow different functions to be compartmentalized in different areas
While matrix is a substance that embedded the cells. Connective tissue appear in various type throughout the human body but it is never been exposed to the outside environment. (Frederic H. Martini, William C.Ober, Judi L.Nath, Edwin F.Bartholomew, & Kevin Petti, 2015)In foetuses and embryos, there were embryonic tissue. After birth, there is mature connective tissue. Mature connective tissue consists of three components and can be divided into six types.
The core of the cell is the nucleus and the largest component of it is the nucleolus. The nucleolus is found in all the eukaryote cells and it is a non membrane bound nuclear organelle.  The nucleolus is a domain lacking membrane, which is high in proteins and RNA content. The proteins continually moves between the nucleolus and the nucleoplasm because of the dynamics within the cell. The structure of the nucleolus is divided into three main subcomportaments, which are the fibrillar center (FC), the dense fibrillar component (DFC) and the granular component (GC).
Are all genes expressed in all cells? No they are not, even though all cells have the same genetic code. Certain genes are not expressed in cells and are turned "off". The different pattern of expressed genes in different cells allow the cells to perform specific activities needed for those cells to do for an organism. 5.
Unknown #10 produced no identifiable macroscopic characteristics as a broth, so the first step was to Gram stain a loopful to determine the microscopic characteristics. Gram staining not only helped identify Unknown #10’s microscopic morphology but it also helped ensure the specimen was a pure culture—no other bacteria were visible when Unknown #10 was Gram stained and observed under the microscope. Unknown #10’s key microscopic morphology was that it was a very small, Gram negative bacillus. Though bacilli can possibly form endospores, no empty white centers were visible which suggested that Unknown #10 was not an endospore forming bacteria. No quick endospore stain was performed to validate this assumption since only one assigned organism was endospore forming and unlike Unknown #10, that organism was Gram positive.
Cellular world can be divided into two types, depending on the presence of nuclei inside cells. Eukaryotic cells have a well-defined nucleus surrounded by a nuclear envelope, whereas prokaryotic cells lack this compartment. All bacteria are prokaryotes. Bearze (2015) provided information about the Bacterial Cell Structure and Function. Vibrio cholerae is a gram negative, non-spore forming, curved rod that is oxidase positive.
They can exist individually, as do bacteria, or they may work together, taking on specialized tasks to create a more complex organism. However, all living organisms share certain characteristics, which are discussed below. Cells are made of cytoplasm. 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.