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Cytoplasmic division in animal cells involves all except?
DNA replication. Cytoplasmic division, also known as cytokinesis, is the process where the cytoplasm of a cell divides following nuclear division. It involves the formation of a cleavage furrow and the separation of the cytoplasm into two daughter cells. DNA replication occurs during the S phase of the cell cycle, prior to cell division.
What is an assumption based on prior experience?
An assumption based on prior experience is when we anticipate a similar outcome or situation based on past encounters or knowledge. This assumption is made without having concrete evidence or information to support it but relies on our past understanding of similar events.
What are the steps of protein synthesis in a cell?
Protein Synthesis Steps in Protein Synthesis: STEP 1: The first step in protein synthesis is the transcription of mRNA from a DNA gene in the nucleus. At some other prior time, the various other types of RNA have been synthesized using the appropriate DNA. The RNAs migrate from the nucleus into the cytoplasm. Prior to the beginning of the protein synthesis, all of the component parts are assembled in the ribosome which is the brown/tan structure in the left graphic. 30S Subunit Ribosome - graphic30S Subunit Ribosome - Chime in new window See Link for an overall diagram. STEP 2: Initiation: In the cytoplasm, protein synthesis is actually initiated by the AUG codon on mRNA. The AUG codon signals both the interaction of the ribosome with m-RNA and also the tRNA with the anticodons (UAC). The tRNA which initiates the protein synthesis has N-formyl-methionine attached. The formyl group is really formic acid converted to an amide using the -NH2 group on methionine (left most graphic) The next step is for a second tRNA to approach the mRNA (codon - CCG). This is the code for proline. The anticodon of the proline tRNA which reads this is GGC. The final process is to start growing peptide chain by having amine of proline to bond to the carboxyl acid group of methinone (met) in order to elongate the peptide. Quiz: The next codon is UAU. What is the next amino acid to be added? AnswerUAU = tyrosine The other graphic on the left shows this process at the molecular level.Click for larger imageSTEP 3: Elongation: Elongation of the peptide begins as various tRNA's read the next codon. In the example on the left the next tRNA to read the mRNA is tyrosine. When the correct match with the anticodons of a tRNA has been found, the tyrosine forms a peptide bond with the growing peptide chain . The proline is now hydrolyzed from the tRNA. The proline tRNA now moves away from the ribosome and back into the cytoplasm to reattach another proline amino acid. Quiz: The next codon is GCU. What is the next amino acid to be added?Genetic Code AnswerGCU = alanine What is the anticodon on this next tRNA? Answeranticodon = CGA What does the code, UAA, on m-RNA say to do? AnswerUAA is the stop signal.Click for larger imageStep 4: Elongation and Termination: When the stop signal on mRNA is reached, the protein synthesis is terminated. The last amino acid is hydrolyzed from its t-RNA. The peptide chain leaves the ribosome. The N-formyl-methionine that was used to initiate the protein synthesis is also hydrolyzed from the completed peptide at this time. The ribosome is now ready to repeat the synthesis several more times. Link to an aminimated movie on protein synthesis. Link to: Great Animation of entire Protein Synthesis - John KyrkLink to: Boyere Tutorial Animations - Protein Synthesis - complete Link to most thorough animation - Protein Synthesis - Brooks-Cole
What type of forest biome covered most of Maryland prior to human settlement?
Maryland was primarily covered by the Eastern Deciduous Forest biome prior to human settlement. This forest type includes a mix of broadleaf trees such as oak, hickory, maple, and beech. The diversity of tree species supported a wide range of wildlife species in the region.
What process increases the surface area of foods prior to chemical digestion?
Mechanical digestion is the process that increases the surface area of foods prior to chemical digestion. This process involves chewing, churning in the stomach, and segmentation in the small intestine to physically break down food into smaller pieces, allowing enzymes to work more efficiently.
What is the site where ribisomes assemble prior to their migration into the nucleus?
nucleoli
Where cytoskeletal proteins synthesized?
All the proetins ncluding cytoskeletal machinery are synthesized in cytoplasm. This is because cytoplasm alone has ribosomes, tRNA and amino acid pool. mRNA need to exported out of nucleus prior to the synthesis of protein.
Does congress convene prior to presidential inauguration?
Yes it does. The US Constitution prescribes that the Congress assemble on 3 January, prior to the 20 January Inaugural.
What is voluntary exile?
Voluntary migration involve weighing up the advantages and disadvantages prior to a decision being made
Prior to the 20th century the largest intercontinental migration of people in history was?
Prior to the 20th century, the largest intercontinental migration of people in history was the transatlantic slave trade, which forcibly transported millions of Africans to the Americas between the 16th and 19th centuries. This horrific migration involved the displacement of an estimated 12 to 15 million enslaved individuals, profoundly impacting demographics, economies, and cultures on both sides of the Atlantic. The legacy of this migration continues to influence societal structures and relations today.
What was the largest intercontinental migration of people in history Prior to the 20th century?
The largest intercontinental migration of people in history prior to the 20th century was the transatlantic slave trade, which forcibly transported an estimated 12 to 15 million Africans to the Americas from the 16th to the 19th centuries. This brutal migration had profound social, economic, and demographic impacts on both Africa and the Americas. The legacy of this forced movement continues to influence contemporary societies.
What are some Autumn things that begin with the letter M?
Migration of the birds occurs during autumn. The birds fly south prior to winter.
How hard is it to assemble the Body-Solid PowerLine PLM180X?
Most of the machine is already assembled prior to shipping. The entire Body-Solid PowerLine PLM180X can usually be put together within an hour.
What is the surname of Russell?
The proud and noble English surname of Russell emerged amidst the massive migration to England following the Norman Invasion of 1066 A.D. It is a habitation-type surname, referencing the place named "Roussel" in Normandy, where they had lived just prior to their migration to Dorset. Family motto: "What will be will be!"
Can eggplant parmesan be frozen prior to baking?
Yes, eggplant parmesan can be frozen prior to baking. To do this, assemble the dish by layering the eggplant, sauce, and cheese, then cover it tightly with plastic wrap or aluminum foil. It's best to freeze it in an airtight container to prevent freezer burn. When you're ready to bake it, thaw it in the refrigerator overnight and then bake as usual.
How was the french governmental system structured prior to the revolution in 1789?
It was an Absolute Monarchy, ruled by the king who directly appointed his ministers. The government ruled without consulting the Parliament, which was to assemble only by order of the king, what would happen only extraordinarily.
What is the packaging and and distribution center of the cell?
The Golgi Apparatus is a highly-folded membrane structure on the terminal portion of the endoplasmic reticulum. The Golgi is the final packaging and distribution station prior to release into the cytoplasm or loading into vesicles for extracellular transport.
