Articles related to "Cytoplasm"

There are only two basic types of cells, primitive prokaryotes and the more complex eukaryotes. Here are the main features that distinguish these cell types.

A look at the structural components of eukaryotic and prokaryotic cells and the differences between the two types of cell.

The cell nucleus may be the most important organelle in the cell for students to understand. It contains the DNA which controls nearly all cell activity inside the cell.

Animals and plants are eukaryotes, composed of cells that have a nucleus, and membrane-bound organelles. But animal cells have a few different features than plant cells.

Plants are eukaryotes, composed of cells that have a nucleus, and membrane-bound organelles. But plants have a few different features than animal cells. Here's a summary.

Molecular studies, in this case of the junk DNA in animal cells, can show how long ago animals shared a common ancestor.

Prokaryotes are evolutionarily ancient, for billions of years the only form of life. Here's a summary of the basic "parts & pieces" of these primitive cells.

The eukaryotic cells of plants and animals possess several critical differences from prokaryotic cells, including a nucleus and other membrane-bound organelles.

What specifically are the similarities between prokaryotic and eukaryotic cells? Here is a side by side comparison to simplify mastery of the basics of cell structure.

Adenosine triphosphate is a power-packed nucleotide that cells of our body just can't live without. Here's a clear summary of what ATP is, how it works and how it's made.

Glycolysis, synthesis of acetyl-CoA, Kreb's Cycle and electron transport are the complex series of reactions that turn the food we eat into energy.

All organisms are made up of cells. There are single-celled and multi-celled organisms. Here is a brief overview of what a cell consists of, and some of its functions.

The tough fibers that span cells and hold the nucleus together are intermediate in diameter between thin actin microfilaments and thick microtubules of the cytoskeleton.

The amount and location of peptidoglycan in the prokaryotic cell wall is what determines whether a bacterium is Gram-positive or Gram-negative.

Most bacteria have one of these two types of cell walls. The differential Gram stain uses two dyes to distinguish between bacteria based on cell wall structure.

This lesson will make the parts of a cell very memorable by using a child's natural creativity to make comparisons.

Cell membranes once seemed to be simple cell structures. Today, membranes are recognized as complex, highly-organized structures that still require intensive research.

When a cell requires more of a specific protein, messenger RNA is made from the gene for that protein and during translation the information is converted to new protein.

When muscle is told to contract a specific series of events take place, leading to specialized proteins gripping onto each other and forcibly sliding one past the other.

See the structure, nature and function of ribosomes - cell organelles essential for life. Ribosomes work with messenger RNA to manufacture all necessary cell proteins.

In order to be effective, antiviral agents must be capable of reaching the infected organ(s) and preventing viral replication without affecting host cell function.

What is cell metabolism? Obtaining food and converting it to energy is one of the features of life. This happens within animals, plants and individual cells.

This lab is appropriate for students of various ages and is a fun way to encourage students to learn about cell structure.

Ribosomes, which can be free floating in the cell or attached to endoplasmic reticulum, carry out the steps of protein synthesis in the cell.

Genes are defined as basic units of heredity that direct the production of proteins. What are proteins and why are they important?

The biological world can often seem like an arbitrary place, but at its heart it is governed by the laws of physics.

This article describes the way patterns seen on the ANA test can be used to determine the specific antinuclear antibody that's present. This, in turn, helps determine wha

The mechanisms of inhibition of bacterial protein synthesis become clearer each year. The recent Nobel Prize in Chemistry rewarded the clearer understanding of ribosomes.

The stability of cell shape and structure are maintained by cytoskeletal proteins that interact with and transport required functional molecules.

Cell outer membranes regulate and transport materials into and out of cells. Without membranes there would be no life as it is now known and understood by scientists

Cells that are small and primitive, or large and more complex, are organized to promote their sustenance and survival. Even the simplest of cells are very complex.

All living things are composed of one or more cells. Unlike cells, viruses, viroids and prions are acellular, nonliving parasites that require a living host to reproduce.

A look at the different types of cloning and their uses.

Advanced infertility treatments now include in vitro fertilization, gamete intrafallopian transfer, zygote intrafallopian transfer and intracytoplasmic sperm injection.

Misunderstood areas in genetics include the eye color phenotype, the genetics of identical twins, cloning, and the offspring of first cousins.

After diagnosis, with proper care and treatment of feline leukemia, many FeLv positive cats enjoy a good quality of life for several years.

The German dye industry made many, varied chemicals including dyes for textiles and cells. Domagk's studies of one dye that killed microbes resulted in a Nobel Prize.

Most bacteria have one of these two types of cell walls. The differential Gram stain uses two dyes to distinguish between bacteria based on cell wall structure.

Motor nerves release acetylcholine to make skeletal muscle contract. Activation of acetylcholine receptors in muscle causes ionic flux that ends with muscle contraction.

Heat, UV radiation, antibiotics and chemicals are all used to control bacteria, viruses and other microorganisms. How to they kill pathogens without hurting our cells?

Many exercise specialists say that aerobic exercise is a must to burn body fat. While cardio can help you lose weight, weight training is even more effective.

A look at the lipid group of biological molecules. Including the fatty acids, triglycerides, phospholipids, glycolipids, waxes, lipoproteins and steroids.

Microtubules are rigid protein tubes that radiate from the cell center and provide the tracks used by motor proteins to move organelles and molecules to the cell surface.

Nearly 80 percent of all reproductive problems in women are due to immune system problems; intravenous immunoglobulin therapy, used off-label, offers benefits.

Pathology is a diverse, important part of medicine in the study of disease. New research in diagnostic methods allow easier, faster treatment of cancer and infections.

Although today's ANA test using immunofluorescence is considered the gold standard for diagnosing a number of different autoimmune disorders, its results are prone to misinterpretation. This article describes what you can expect from the current ANA test.

Tick-borne diseases can be caused by bacteria, viruses, protozoa, and rickettsia. Rocky Mountain spotted fever, a rickettsial disease, can be fatal.

Bacteria and viruses are both tiny infectious agents with the ability to cause disease. So it is not surprising that these microbes are sometimes mistaken as the same.

A look at the differences in structure between viruses, and how viruses reproduce.

More then just mold, fungi are the decomposers of the ecosystem. Once grouped with plants, fungi are actually more closely related to animals.