Cell Essay Topics

Position Supporting Stem Cell Research

Cells that can make a distinction into a variety of cell types are called stem cells and comprise embryonic stem (ES) cells and adult stem cells. Since ES cells can turn into a new organism or can differentiate into any tissue type, they are said to be “totipotent.” Adult stem cells, conversely, as they cannot… View Article

Stem Cell Research: Medical Advantages

Greatly debated, stem cell research is very controversial; especially embryonic stem cell research. Many debate over the ethics of the research versus the medical advantages. The medical advantages outweigh the ethical views. The mass of embryonic stem cells that are used come for in vitro fertilization (IVF) (Black). Those cells are disposed as medical waste—using… View Article

The Reproduction of Prokaryotic Cells

Prokaryotic cells or prokaryotes are a type of cells that lack membrane-bound organelles such as a cell nucleus which differentiate them from their eukaryotic counterpart. According to the book Biology by Neil Campbell and Jane Reece, in addition, instead of a chromosomal DNA, the prokaryotes genetic information is found inside plasmids, which are basically characterized… View Article

Cell Theory

In biology, cell theory is a scientific theory that describes the properties of cells, the basic unit of structure in every living thing. The initial development of the theory, during the mid-17th century, was made possible by advances in microscopy; the study of cells is called cell biology. Cell theory states that new cells are… View Article

Cell Organelle

In cell biology, an organelle (pron.: /ɔrɡəˈnɛl/) is a specialized subunit within a cell that has a specific function, and is usually separately enclosed within its own lipid bilayer. The name organelle comes from the idea that these structures are to cells what an organ is to the body (hence the name organelle, the suffix… View Article

Diffusion and Osmosis

Diffusion and osmosis are very important in biological process. Diffusion is the movement of molecules or ions from a region of their high concentration to a region of their low concentration. Osmosis is the diffusion of water molecules across a semipermeable membrane. To gain a better understanding of diffusion and osmosis, we examine multiple experiments… View Article

Formation of Ascospores

In a typical ascomycotina, pyronema for example, sexual reproduction is by gametangial contact invoving the ascogonium ( female organ) and antherridium (male organ). Ascus and ascopores are results of sexual reproduction . the female and male organs aare produced by the mycelium. A trichogyne is also produced which joins the antheridium to the ascogonium. The… View Article

Specialised Cells in Human Biology

“The cells in your body are tiny-a row of about forty would fit into 1mm. But although they are too small to see with the naked eye their complexity is remarkable. A single cell can be thought of as an organised chemical system, separated from its disorganised surroundings by a membrane” (Boyle et al 1999)… View Article

Physics Project

Eyes are organs that detect light, and convert it to electro-chemical impulses in neurons. The simplest photoreceptors in conscious vision connect light to movement. In higher organisms the eye is a complex optical system which collects light from the surrounding environment; regulates its intensity through a diaphragm; focuses it through an adjustable assembly of lenses… View Article

Ap Biology Notes Cellular Communication

Cell-to-cell communication is essential in multicellular organisms. They must communicate to coordinate activities such as growth and development, and reproduction. In addition unicellular organisms communicate with each other. Signals may use light, or touch but we will focus on chemical signals. 1. External signals are converted to responses within the cell a. Evolution of cell… View Article

Diffusion Review Worksheet

1. Define diffusion and what causes it to occur? The action of spreading the light from a light source evenly so as to reduce glare and harsh shadows. Diffusion is caused when entities are small and moving in molecules. They collide because they are moving at a random pace. The temperature causes diffusion. 2. Define… View Article

The Cell Cycle

I. Concept 12.1- Cell division results in genetically identical daughter cells A. Overview 1) The continuity of life is based on the reproduction of cells or cell division. 2) The cell division process is an integral part of the cell cycle, the life of a cell from the time it is first formed from a… View Article

A Cell Compared to a Hospital

The main organelle is the nucleus. I think the nucleus is like the hospital administration because the nucleus is the core of the cell that handles everything, and the hospital administration handles everything that goes on in the hospital. Without the “cores” for both the hospital and the cell, neither could properly functions. The nucleolus… View Article

Cell Fractionation

Introduction Mitochondria is an organelle found in eukaryotic cells that play a role in biochemical processes such as respiration and energy production. Mitochondria even play an important role in apoptosis, or programmed cell death. This is achieved by disruption of electron transport, oxidative phosphorylation, and ATP production or even the release of proteins that trigger… View Article

How Is the Structure of Cells Related to Their Function

Cell structures come in various shapes and sizes dependent on their location within an organism and what life sustaining process it carries out. These can range from the globular protein of a red blood cell, designed to carry four oxygen molecules at a time to the tail like flagellum of a bacteria designed for mobility… View Article

Osmosis: Cell Wall and Sodium Chloride Solution

* Get a single layer of plant cells. If you are using red onion, cut a 1 cm square from a fleshy piece of onion and then peel off a single layer of the red cells. If you are using rhubarb, peel a piece from the epidermis. If you are using toadflax peel a piece… View Article

Cell Phone Radiation

In today’s society there have been numerous advancements to help us in our everyday lives. One of this advancement is cell-phones, which is one of the greatest development in technology. We have become dependent on mobiles phones and it seem like a high percentage of the population including elderly people, young adult and even kids… View Article

Egg Cell

The egg cell is the female gamete used for sexual reproduction. The egg cell is responsible for providing half of the genetic material required for reproduction. When the egg cell joins with the sperm cell…. The egg cell is large and bulky structure which allows the sperm cell to get in easily. WHAT ORGANELLES DOES… View Article

Cell Transport Mechanisms and Permeability

The cell is invaluable building block of all biological life on this planet, and one of its most important and unique characteristics is its ability to be selectively permeable with its plasma membrane. This outer membrane’s sophisticated mechanisms of transport through its bilayer are vital in maintaining homeostasis in the cell and the entire body…. View Article

Animal vs Plant Cells

Animal and Plant cells consist of most of the same cell types, but the whole shape of the cell is quite different. An animal cell is a round, uneven shape, whereas the Plant cell has an affixed shape. They have a more of a rectangular shape. Chloroplast, Vacuole and the Cell wall are only found… View Article

Blood Buffer

Objectives: After completing this exercise and reading the corresponding material in your text, you should be able to 1. Prepare a wet mount slide 2. Identify structures described in this lab on slides 3. Cite examples of the wide diversity of cell types 4. Relate differences in structure among cells to functional differences Introduction Structurally… View Article

Osmosis and Dialysis

Using dialysis tubing to model diffusion of a cell membrane and investigating the influence of solute concentration on osmosis Purpose * Discover how dialysis tubing diffuses the cell membrane * Explore the effect of solute concentration on osmosis Background A cell membrane is a very significant function in the human body. In one sense, it… View Article

A Terrible Beauty Is Born

“A terrible beauty is born“, this line is taken from the excellent poem “Easter 1916” by William Butler Yeats. W.B Yeats uses these words to describe the Easter Rising which resulted in the death of fifteen republican leaders along with their comrades. These events in Irish history have brought celebration but also a great deal… View Article

The Basic Unit of Life

One of the hallmark characteristics of living things is that they perform chemical reactions. These reactions are collectively known as metabolism. Cells, the basic units of life, can perform many of these metabolic reactions. In a multicelled organism, the cells group together to form tissues that perform the same functions. Tissues group together to form… View Article

Biology Notes Class

Cells were first discovered by Robert Hooke in 1665. Leeuwenhoek (1674), with the improved microscope, discovered the free living cell in pond water for first time. Robert Brown in 1831 discovered the nucleus in the cell. Purkinje in 1839 coined the term ‘protoplasm’ for the fluid substance of the cell. The cell theory that all… View Article

Mid Term Review

1. For each pair of terms, explain the differences in their meanings. A. Diffusion, osmosis Diffusion is the process where molecules move from a region of high concentration to a region of low concentration. Osmosis is basically the same, but with water. B. cell division, mitosis Cell division is part of mitosis, when a cell… View Article

Cell Analogy – Mall

Cell Membrane – The cell membrane protects the inside of the cell from outside containments, keeps the cell in contact and maintains its shape. This relates to mall security guards. They’re job is to protect the mall, make sure everything is intact and everybody is safe. Without the cell membrane, containments could enter, the security… View Article

Government Funding Stem Cell Research

Stem cell research is a relatively new science that is the source of much medical promise yet much controversy as well. The type of stem cells required, embryonic stem cells, are only obtainable one way: through the destruction of human embryos. In 1996, the Dickey-Wicker Amendment was passed, making the government unable to fund any… View Article

Tour of Penncellvania Cellsburg

Im a tourist as you can see, but I will be taking you on a tour of Penncellvania Cellsburg. Penncellvania Cellsburg is a beautiful and amazing city just off the Mediterranean Sea. Also, everything in the city relates to cells, as we will learn on our tour today. Today the tour is about cells relating… View Article

Red Onion Cell Lab

The passage of water molecules through a selectively permeable membrane is a special case of diffusion known as osmosis. Osmosis results in the movement of water from an area of lower concentration of dissolved material to an area of higher concentration of dissolved material. For a demonstration of this principle, a purple onion cell is… View Article