Cell Structure and Organelles Purpose To study the structure and function of organelles in eukaryotic plant and animal cells. ... Yes, there is an intercellular space between two cell membranes; water, nutrients, wastes can be found in this space. 3. ... As the cell matures, it grows and increases in volume making the ratio of nucleus volume to cell volume less. 29. ... The cell walls allow easy transfer of nutrients to the organelles from the cell membrane and disposal from the organelles to the cell membrane. ... Procedure B Number Name (animal cell) Name (plant cell) 1 Nuclear membran...

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• Grade Level: High School

Prokaryotic cells are cells that contain a very primitive nucleus as pro- means before and karyon is a Greek word, meaning nucleus. Prokaryotic cells are found in organisms such as bacteria, most commonly eubacteria and archae bacteria. Eukaryotic cells are therefore are found in all other living organisms, the name implying that there is a proper nucleus present. ... Another difference between prokaryotic cells and eukaryotic cells is that in prokaryotic cells there are no membrane-bound organelles, however in eukaryotic cells these membrane-bound organelles are present. These organelles ...

• Word Count: 569
• Approx Pages: 2
• Grade Level: Undergraduate

Surrounded by a cell membrane and containing a nucleus (or having contained a nucleus at some stage of their existence), they usually range from 10-30m in size. ... The major difference between the two types of cell is that unlike eukaryotic cells, prokaryotic cells lack membrane-bound organelles, and also a cytoskeleton. ... Since there are no organelles to be transported in prokaryotic cells, this function is unnecessary. ... In prokaryotic cells the ribosomes are found free in the cytoplasm. ... Prokaryotic cells may have photosynthetic pigments, such as those found in blue bacteria. ...

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The actual physical location of the various organelles, also donates to the overall success of the cell. The endoplasmic reticulum and the Golgi apparatus which are specifically devoted to the sorting and transport of proteins are found closest to the nucleus and nuclear envelop. ... These high concentrations of biochemical are found within certain organelles and not throughout the entire cell. ... Due to the size of the eukaryotic cell, transportation of substances comes into play again and the RNA produced must eventually move from the nucleus into the cytoplasm. ... It may be concluded that...

• Word Count: 1099
• Approx Pages: 4
• Has Bibliography
• Grade Level: Graduate

They have some common parts found in both and other parts that are unique to each. A cell membrane is found in both plant and animal cells. ... Cells also contain other "small organs" called organelles that carryout various cell functions. ... The nucleus contains the DNA, or chromosomes, that carries all the instructions on how a cell will function, live, and reproduce. ... In mitosis, the pairs of chromosomes in the nucleus of the parent cell divide into two daughter cells. ...

• Word Count: 567
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• Grade Level: High School

In the middle of the atom there is a nucleus. ... Electron are not in the nucleus like the protons and neutrons are. ... The energy levels are like orbits that surround the nucleus. ... Scientists have discovered 109 elements, 90 were found in nature, and 19 were artificially made in laboratories by scientists. ... It contains one proton and one neutron in the nucleus. ...

• Word Count: 4152
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• Grade Level: High School

Being the minority of the Moneran group they are only found in extreme environments such as swamps, salt lakes, and deep-ocean hydrothermal vents. ... Its cell structure has no nucleus, no organelles, a cell membrane, and some cell walls. ... The eukaryotic cell contains a membrane-bound nucleus, complex membrane-bound organelles, such as mitochondria, and chloroplasts in photosynthetic protists, and DNA combined with protein in chromosomes that are enclosed within the nuclear envelope. ... In the five-kingdom system, a plant is defined as being multi cellular and eukaryotic, or with a membr...

• Word Count: 782
• Approx Pages: 3
• Grade Level: Undergraduate

Prokarytoic cells do not have a nucleus, like eukaryotic cells do. Prokaryotic cells are very small and except for ribosomes, they do not have the cytoplasmic organelles found in eukaryotic cells. ... Bacteria are found in three basic shapes; rod, round or spherical, and spiral or helical-shaped. ... The protests are eukaryotes; their cells have a nucleus and all of the various organelles. ... Three different types of life cycles are typical of eukaryotes, and all three are found in the kingdom Protista. ...

• Word Count: 1381
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• Grade Level: Undergraduate

Muscle cells contain most of the structures common to all cells. ... Evolution has not changed the actin genes much such that actin from different species is found to be often interchangeable. ... This blueprint is a gene is the cell's nucleus and the process by which the information gets out of the nucleus into the cytoplasm, where the protein will be made starts with transcription. ... For the first time, scientists have seen what it takes to move the long stretches of DNA through the enzyme factories that translate the genetics into made of RNA: a muscle inside the nucleus of the c...

• Word Count: 1417
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Plant Kingdom The plant kingdom comprises of about 260,000 known species of mosses, liverworts, ferns, herbaceous and woody plants, bushes, vines, trees, and various other forms that cover the Earth and are also found in waters. ... Plants are multicellular eukaryotes; their cells contain membrane-bound structures called organelles. ... During photosynthesis, plants make their own food by converting light energy into chemical energy, a process carried out in the green cellular organelles called chloroplasts Parts of the Plants Cells: The many varieties of plant species have distinc...

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(Heath, 110) DNA can also be found outside of chromosomes. It can be found in cell organelles such as plasmids in bacteria, also in chloroplasts in plants, and mitochondria in plants and animals. ... There are four main nitrogenous bases found in RNA. ... All of this must happen so that messenger RNA can be created, the actual DNA cannot leave the nucleus. ... Proteins control both the cell's movement and it's structure. ...

• Word Count: 931
• Approx Pages: 4
• Grade Level: High School

(Miller, 139) DNA is the genetic material found in most viruses and in all cellular organisms. ... (Heath, 110) DNA can also be found outside of chromosomes. It can be found in cell organelles such as plasmids in bacteria, also in chloroplasts in plants, and mitochondria in plants and animals. ... There are four main nitrogenous bases found in RNA. ... Proteins control both the cell's movement and it's structure. ...

• Word Count: 1313
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• Grade Level: High School

Information from proteins is passed from DNA to RNA in modern cells (BSCS). ... Carl Woese, a scientist, produced a model for the formation of the first cells (BSCS). ... A scientist found the oldest fossil creation that was dated to be around 3.5 billion years ago. ... To find out about life, we must look into the ocean floor where we found geothermal activity. ... Besides a nucleus, euraryotic cells also contain organelles, which prokaryotes lack. ...

• Word Count: 1496
• Approx Pages: 6
• Grade Level: High School

A good example of known uncertainty (error) is found with polling results. ... An atom contains a dense inner region called the nucleus. The nucleus contains the atom's protons and neutrons. ... The outer region occupied by electrons is much larger than the dense nucleus. The electrons are thought to orbit the nucleus within an area, the size and shape of which are related to the electrons' energy. ...

• Word Count: 10700
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• Grade Level: High School

It is an element found in countless products, including steel, batteries, aluminum, animal feed, and welding metals. ... Once inside these cells, the heavy metal provokes a series of biochemical and molecular events leading to cell death induced by apoptosis and/or necrosis (Roth & Garrick 2003). ... An additional study was conducted by a Japanese neurologist who found a form of L-dopa responsive "juvenile parkinsonism" (Yokochi, Narabayashi, Izuka, & Nagatsu 1984). ... The specific mechanism of cell death is still under research. ... Necrosis is the disruption and disposal of a cell and i...

• Word Count: 4190
• Approx Pages: 17
• Has Bibliography
• Grade Level: Undergraduate

The area of the body known as the lumbar region would be found at the: upper arm neck foot lower back 3. ... Organelle f. Cell g. ... Describe the major body cavities, what organs are found in each and be able to identify them on a diagram. ... Where is each found? ...

• Word Count: 2878
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• Grade Level: High School

Osseous tissue contains specialized cells, cell products, and a fluid matrix. ... These lacunae are found between narrow sheets of calcified matrix, known as lamellae. ... The composition of bone consists of cells including osteoblasts, osteocytes, and osteoclasts, bone lining cells, the extracellular matrix, and the periosteum and endosteum. Osteoblasts are derived from osteoprogenitor cells, which are like stem cells for the bone, which are mesenchymal in origin. ... Compared with osteoblasts, osteocytes are smaller and have fewer numbers of organelles, although they do have a significant nu...

• Word Count: 5684
• Approx Pages: 23
• Has Bibliography
• Grade Level: Undergraduate

A rudimentary light-sensitive cell or a very simple eye is better than nothing. ... [viii] Johnson notes that the creatures found in the early Cambrian period (about 570 million years ago) were very different from those found in Precambrian strata. ...

• Word Count: 7861
• Approx Pages: 31
• Has Bibliography
• Grade Level: Undergraduate