Essays Tagged: "Cytoplasm"

How changes in the atmosphere, eukarotes, and multicellularity have occured and influenced life on earth

Eukaryotes are distinguished from prokaryotes by their larger size, the separation of nucleus from cytoplasm by a nuclear envelope, the association of DNA with histone proteins and its organization i ...

(2 pages) 79 1 3.2 Mar/1996

Subjects: Science Essays > Atmospheric Sciences

Mononucleus - Bacteria

he prokaryotic cells. Bacteria fall into the Monera Kingdom. They have a single DNA molecule in the cytoplasm. Almost all monerans have a cell wall that protects the cell and gives it its shape. Some ...

(6 pages) 90 0 4.0 Dec/1996

Subjects: Science Essays > Biology

Introns and Exons

ntary to the one of DNA. In eukaryotes the mRNA is processed in the nucleus before transport to the cytoplasm for translation. In order for the mRNA to become true functioning RNA it must under go sev ... could be some distance apart. Splicing takes place in the nucleus but also could take place in the cytoplasm and the mitochondria. After the splicing of the introns, the G-caps and the Poly A tails r ...

(3 pages) 33 0 4.8 Mar/1997

Subjects: Science Essays > Biology

"The Living Cell"

he 'living jelly.' The protoplasm of a typical cell forms three vital parts: The cell membrane, the cytoplasm, and the nucleus.The membrane encloses the other cell structures. Much of the chemical wor ... e membrane encloses the other cell structures. Much of the chemical work of the cell is done in the cytoplasm, which surrounds the nucleus. The nucleus, enclosed by its own membrane, is the control ce ...

(2 pages) 70 0 4.6 Nov/1996

Subjects: Science Essays > Biology

Botany Lab Report on Cellular Respiration.

eps produce the majority of the ATP formed during aerobic respiration.Glycolysis takes place in the cytoplasm, while the other two steps occur within the mitochondrion organelle. In order to study the ...

(8 pages) 142 0 3.8 Jun/2003

Subjects: Science Essays > Biology > Plant Biology

Biology notes on the "Phyla of Protists." This Phyla includes algea, protists, sponges, etc.

hese protists are distinguished by their unique form of locomotion, in which they use extensions of cytoplasm. Amoebas and forams are unicellular heterotrophs.Amoebas, members of the phylum Rhizopoda, ... ll wall or flagella, it is extremely flexible. It moves through its environment using extensions of cytoplasm called pseudopodia, from the Greek words pseudo, meaning "false," and podium, meaning "foo ...

(4 pages) 52 0 4.8 Aug/2003

Subjects: Science Essays > Biology

Module 1 biology notes

plasma membrane. Some are surrounded by a capsule. Ribosomes are the only organelles found in their cytoplasm.ľEukaryotic cells have a nucleus that is separated from the cytoplasm by a nuc ... karyotic cells. They are surrounded by a plasma membrane. Some are surrounded by a cell wall. Their cytoplasm contains a variety of organelles.ľEach organelle has a particular function.MIT ...

(4 pages) 46 0 3.7 Feb/2004

Subjects: Science Essays > Biology

This is a assignment on lipids

lly permeable layer found outside the membrane of some cells. Cell Wallb)Series of membranes in the cytoplasm through which materials can be transported and in which proteins accumulate. Endoplasmic R ... e molecule been transported is usually replaces with one in it's place.IronConcentration of iron in cytoplasmConcentration of iron in pond waterConcentrated increase from pond water to cytoplasmPotass ...

(4 pages) 43 1 2.3 Feb/2004

Subjects: Science Essays > Biology

Describe the role of DNA in protien synthesis

not be able to reproduce protein. Protein is made out of a long chain of amino acids. It is made in cytoplasm of the cells.Protein synthesis is dependant of the DNA being properly decoded. To start th ... the decoding strand. However, DNA is too large a molecule to pass through the nucleus wall into the cytoplasm where the protein is made. This means that the DNA has to be copied and transported throug ...

(2 pages) 50 1 4.4 Feb/2004

Subjects: Science Essays

Mitosis & Meiosis

. In telophase, a nuclear membrane forms around each new cell, resulting in two daughter cells. The cytoplasm then begins to divide, called cytokinesis.The difference between mitosis and meiosis I is ...

(1 pages) 95 2 3.4 Mar/2004

Subjects: Science Essays > Biology > Human Biology

Five Kingdoms of Life

not contain nuclear membranes in their cells. This means that heir genetic code swims freely in the cytoplasm of the cell (not protected). Going into more detail, it is known that some of the members ...

(3 pages) 39 0 3.0 May/2004

Subjects: Science Essays > Biology

The Effect Of Temperature On a Cell Membrane's Permeability

re.Hypothesis:An increase in temperature will damage and denature the plasma membrane and cause the cytoplasm and other substances contained within the membrane to leak out.Introduction:The purpose of ... ave a surrounding membrane (called the plasma membrane) enclosing a water-rich substance called the cytoplasm. All cells host a variety of chemical reactions that enable them to grow, produce energy, ...

(5 pages) 111 0 4.7 Jun/2004

Subjects: Science Essays > Biology

Animal Cells

contains the CellMembrane keeping the cell together and controlling what substances go in and out, Cytoplasm is the water-rich matrix within a cell that contains and surrounds the other cell contents ...

(2 pages) 28 0 4.0 Nov/2004

Subjects: Science Essays > Biology

AT1- Osmosis In Potatoes

nts, then water leaves the cell by osmosis, through the cell membrane. Water is lost first from the cytoplasm, then the vacuole through the tonoplast. The living contents of the cell contracts and eve ...

(8 pages) 33 0 3.0 Jan/2005

Subjects: Science Essays > Biology

Protein Synthesis

the largest is about three thousand amino acids long. Protein synthesis occurs on ribosomes in the cytoplasm of a cell but is controlled by DNA located in the nucleus.Protein synthesis is a two-part ... tic code (instructions how to assemble the protein) from the DNA in the nucleus to ribosomes in the cytoplasm. tRNA picks up and transfers amino acids from cytoplasm to the mRNA on the ribosomes and i ...

(3 pages) 48 1 4.0 Apr/2005

Subjects: Science Essays > Biology

What do You Understand by Recombinant DNA Technology? Discuss the Moral, Ethical, Social, Economic and Environmental Issues Associated with the Technology, giving your views.

ntial substances found inside bacterial cells required before the process can begin. Present in the cytoplasm of a bacterial cell are a number of small circular pieces of DNA known as plasmids. Also p ...

(7 pages) 56 0 3.6 May/2005

Subjects: Science Essays > Zoology

Describe the current model of membrane structure and explain how it accounts for the movement of some substances into and out of the cells

bilayer called phospholipid. It consists of a water-soluble end (hydophilic), facing inwards to the cytoplasm and outwards to the extracellular fluid. The non-water-soluble (hydrophobic) ends face eac ...

(1 pages) 4757 0 0.0 Jun/2005

Subjects: Science Essays > Biology

People are old parents, Beyond just in vitro fertilization, the world of infertility treatments has blossomed

t in vitro fertilization, the world of infertility treatments has blossomed into treatments such as cytoplasmic transfer where the cytoplasm from a healthy donor egg is injected into an advanced "olde ...

(1 pages) 18 0 0.0 Jun/2005

Subjects: Social Science Essays > Psychology

The Full Process of the Formation of a Protein.

ondary, tertiary and quaternary).The process of its formation begins in the nucleus and ends in the cytoplasm.Transcription is the first step in protein synthesis. This involves the unwinding of the D ... double helix rejoins and the newly formed mRNA leaves the nucleus through the nuclear pores.In the cytoplasm, the mRNA attaches to ribosomes. Another type of RNA, transfer RNA (tRNA) brings amino aci ...

(1 pages) 25 0 3.0 Sep/2005

Subjects: Science Essays > Biology


tures that the animal cells don't. Plant cells have nucleus, chromosomes, cell membrane, cell wall, cytoplasm, endoplasmic reticulum, chloroplasts, vacuole, and mitochondria. Some of plant cell struct ... ells and animal cells both have something in common, they have nucleus, chromosomes, cell membrane, cytoplasm, endoplasmic reticulum, vacuoles, and mitochondria. But they also had some difference; pla ...

(2 pages) 80 4 3.5 Oct/2005

Subjects: Science Essays > Biology