Eukaryote

Organelles of Animal Cells The Nucleus: ~A large, round organelle visible under the microscope. Functions- Regulation • Controls the cell’s activities • Controls cell reproduction Contains genetic material - DNA that makes up the genes and chromosome. The Ribosome: ~Made of dozens of different proteins as well as RNA, also found in large numbers in the cytoplasm of living cells. Ribosome are typically composed of two subunits: • Large subunit • Small subunit “ Free” Ribosome makes…

An organism discovered on the Japanese seashore behaves as a predator and a plant in a bizarre lifecycle that may bring biologists closer to understanding how chloroplasts became part of plant cells, according to a study from the University of Tsukuba. Before understanding how this mysterious single-celled organism works, it had to be given a proper scientific name. Analysis of its cellular structure and genetic profile showed that it is most closely related to organisms assigned to the genus…

Aseptic Technique The principles of the aseptic technique are easy to understand, however, they are invaluable if a proper procedure is to be executed in such a laboratory setting. Primarily, to understand its importance, it must be understood what is aseptic technique. In essence, aseptic technique is the collection of procedures and steps performed to ensure both the cleanliness of the laboratory setting, and more importantly, the purity of the components used; that is to say, to ensure that…

The function of Eukaryotic and Prokaryotic cell components by FATIMA MOHIDIN Eukaryotic Cell Eukaryotic cells are cells that contain a nucleus and have membrane bound organelles they are multicellular cells and undertake reproduction by the process cell division known as meiosis and mitosis. There are 2 types of eukaryotic cell: plant and animal cells. They contain organelles such ribosomes, smooth and rough endoplasmic reticulum, mitochondria, nucleolus, centrioles, cell membrane,…

Movement of cells are important since some cells depends on movement to carry out its major function. For example, sperm cells need to move from one place to another place to carry out reproduction. Movement of cells are supported by cytoskeleton system of the cells. The cyctoskeleton system are composed of microtubules, microfilaments and intermediate filaments. However, for unicellular organisms such as Paramecium, the movement of cells are regulated through cilia or flagella. Cilia can be…

1. What is the difference between mitosis and meiosis? Define each term, and then explain how each process contributes differently to the conception and growth of a zygote. The two ways cell division can occur are through mitosis and meiosis. In mitosis, a cell produces two clones of itself, each with the same number of chromosomes. In meiosis, a cell will produce four cells called gametes through the process of spermatogenesis and oogenesis. Gametes are most commonly known as sperm cells in…

Metamorphosis is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. “Some insects, fishes, amphibians, mollusks, crustaceans, cnidarians, echinoderms and tunicates undergo metamorphosis, which is usually accompanied by a change of habitat or behavior”. (http://en.wikipedia.org/wiki). But this change has been incorporated to human’s life…

If you think about it, men and women aren’t so different. Will we ever come to closure on our similarities? When you look at a man, you notice his physical appearance. If we look beyond physical appearance, both men and women are built the same way. Although some may believe in Man being on top, women can do anything a man can do. Over 1 billion years ago, sex evolved into single-cell organisms. One eukaryotic cell would come in contact with another eukaryotic cell and if that cell responded,…

Microbes - bacteria, archaea, fungi, algae, protozoa and viruses - have been around for at least 3,500 million years and were the only life forms on Earth for most of that time. Microbiology is the study of these small organisms. A microorganism or microbe is an organism that is microscopic. The development of the microscope, along with the observations of various scientists, led to the discovery of microorganisms. It is thanks to Van Leeuwenhoek who is largely credited with the discovery of…

The Effect of Lime Juice on a Gummy Bear’s Mass Lab Introduction Objective: In this lab we are going to learn the effect of lime juice on a gummy bear when it is soaked for 24 hours. We will see the effect is has on the mass when it is taken out. Information is Useful: This lab is an example of how cell transport works. The gummy bear is a cell in this case which is placed in a hypotonic solution that is the lime juice. Hyp0tonic solution is a greater concentration of the solute molecules…