1. Ovum a. Definition: the female reproductive cell that is capable of developing into a new member of the same species after fertilization. It is also called the egg. b. Structure: It is large in size (as large as a sesame seed). It is one of the largest cells in the human body. It is a spherical cell. It is not mobile (static). c. Function: It carries the set of chromosomes contributed by the female. It creates a good environment for the fertilization of the sperm. It also provides nutrients for
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a.1 Eukaryotic Cell vs Prokaryotic Cell All cells can be classfied into prokaryotes and eukaryotes. Prokaryotes were the only form of life on Earth for millions of years until more complicated eukaryotic cells came into being through the process of evolution. Comparison chart All attributes Differences Similarities | Eukaryotic Cell | Prokaryotic Cell | Nucleus: | Present | Absent | Number of chromosomes: | More than one | One--but not true chromosome: Plasmids | Cell Type: | Multicellular
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that contains the genetic info. 4 billion codes in length Gene- a segment of DNA that controls a certain protein production. A gene is made up of hundreds to thousands of codes. Chromosomes- genetic material that is coiled up into structures during cell division. Importance of DNA- genes control the production of proteins..(look like‚ body function‚ body communications‚ and enzyme control) DNA screening- the process of testing individuals to determine whether they have the gene(s) associated w/
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The cell is the fundamental structural unit of all living organisms. Some cells are complete organisms‚ such as the unicellular bacteria and protozoa; others‚ such as nerve‚ liver‚ and muscle cells‚ are specialized components of multi-cellular organisms. Cells range in size from the smallest bacteria-like mycoplasmas‚ which are 0.1 micrometer in diameter‚ to the egg yolks of ostriches‚ which are about 8 cm (about 3 in) in diameter. Although they may differ widely in appearance and function‚ all cells
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the study of cells‚ This brings me to the one career that I would absolutely love to learn more about‚ cell biology. A cell biologist is a scientist
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Cells are considered the basic units of life in part because they come in discrete and easily recognizable packages. That’s because all cells are surrounded by a structure called the cell membrane. The cell is the very smallest unit of living matter. All living things including plants and animals are made up of cells. Cells are made of atoms‚ which are the smallest units of matter. There are many different kinds of cells. The two kinds you are most likely to be familiar with are animal and plant
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Analysis of STEM fields Analysis of STEM fields 1. Introduction STEM is an acronym that referring to Science‚ Technology‚ Engineering‚ and Mathematics (Rotherham‚ 2011). What is STEM? The simple answer is that STEM means jobs. A complicated answer is that it is an educational key to a better U.S. economy; it addresses the growing disconnect between the skills that employers need in a rapidly increasing technological world and the lack of talent that the education
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California have revealed a molecular mechanism that directs the chance and role of cells during the process of animal development. The researchers’ discovery shows remarkable findings that are promising in the advancement of cancer and stem-cell research. The hypothesis of this article relates to even though each individual cell contains the complete DNA code‚ only small portions of this DNA code are activated. Therefore‚ the cell has a certain function instead of others. Every single gene in the DNA code
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and animal cells have several differences and similarities. For example‚ animal cells do not have a cell wall or chloroplasts but plant cells do. Animal cells are round and irregular in shape while plant cells have fixed‚ rectangular shapes. Animal Cell Plant Cell Cell wall Absent Present (formed of cellulose) Shape Round (irregular shape) Rectangular (fixed shape) Vacuole One or more small vacuoles (much smaller than plant cells). One‚ large central vacuole taking up 90% of cell volume.
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David Stem Cell paper T-T 11:20 Stem Cells and Cloning 1. Cloning is one of the most widely talked about topics in this world. The people that defend cloning believe that cloning and genetic engineering will be the answer to most of the diseases in the future. On the other hand‚ the people against it think of it as ‘ playing God ’. Cloning is unethical because people will lose their identities if their clones come into
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