A molecule of_ contains all the codons needed to produce a particular polypeptide.

A molecule of_ contains all the codons needed to produce a particular polypeptide.

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The mRNA encounters the machinery needed to decipher the linear sequence of codons and generate the polypeptide chain in the cell’s cytoplasm. The majority of the decoding takes place on ribosomes.
The process of forming and elongating the polypeptide will begin once the intact 70S ribosome has been created. This procedure is carried out in the form of a loop, in which a sequence of acts is repeated repeatedly.
The period of elongation is repeated until the ribosome complex hits a stop signal (stop codon) on the mRNA. The polypeptide synthesis comes to an end at this stage, and the entire molecule is released.
A newly translated polypeptide does not always imply that it is a functional protein. Until polypeptides may carry out their assigned roles within the cell or organism, they must be folded and often altered or changed.
Mutations are modifications to a DNA molecule’s base sequence that are both irreversible and inheritable. They not only change DNA, but they also change proteins if they occur in structural genes (those that code for proteins), which can have significant implications for the cell or organism.

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The following is one of the meanings of a gene: a deoxyribonucleic acid (DNA) fragment that contains the code for a particular polypeptide. Each messenger RNA (mRNA) molecule is a transcribed copy of a gene that a cell uses to create a polypeptide chain. If a protein has two or more polypeptide chains, each one is coded for by a different gene. Now we’ll look at how the nucleotide sequence in a ribonucleic acid (RNA) molecule is converted into an amino acid sequence.
How does a molecule made up of just four nucleotides determine the sequence of the 20 amino acids present in proteins? If each nucleotide codes for a single amino acid, the nucleic acid could only code for four amino acids. What if amino acids were coded by two-nucleotide groups? There are 42, or 16, different nucleotide combinations (AA, AU, AC, AG, UU, and so on). Even though this code is more detailed, it is still inadequate to code for 20 amino acids. When the nucleotides are grouped in groups of three, however, the number of potential combinations increases to 43, or 64. We now have a code that is detailed enough to guide the synthesis of a protein molecule’s primary structure.

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Theory: The ‘test tubes’ inside the device in this simulation contain a solution of broken up cells. This cell extract contains all of the ingredients required to create short polypeptide chains. All you have to do is provide the RNA fragments that will serve as a template and direct the polypeptide sequence development. You’ll ‘break’ the genetic code and figure out which triplet sequences of RNA bases code for each of the 20 amino acids contained in a typical protein using this cell-free synthesizing system.
A gene is a piece of DNA that contains the instructions for producing a single polypeptide chain. When a cell requires a specific protein, the gene is copied into a complementary RNA molecule (called messenger RNA or mRNA). This mRNA molecule is processed in a number of ways in certain cells before heading to the cytoplasm, where it serves as a guide for the synthesis of a polypeptide chain. Two items are determined by the order or sequence of the bases along the mRNA molecule: which amino acids are inserted into the polypeptide chain and where these amino acids appear in the polypeptide chain.

Given below is the sequence of coding strand of dna in a

The answers are all right.

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4 Describe cholesterol’s role in the plasma membrane.

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has an effect on membrane permeability

How to determine which strand of dna is transcribed into

5The organelles and the cell’s watery portion are referred to as cytoplasm.

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6The cytosol is the watery portion of the cytoplasm.

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7Which of the following cytoplasm descriptors is incorrect?
More protein is present in extracellular fluid.
8Themitochondria generate the majority of the ATP needed to power cellular operations.
The smooth ER is where lipids and glycogen are synthesized.
10Which of the following mitochondrial claims is false?
There aren’t many or none. This indicates that cells with a lot of mitochondria have a lot of energy. 12In the structure named, carbohydrates and lipids are synthesized. 7 13Which structure in the cell produces ATP? 314The nucleus houses the bulk of a cell’s DNA. The nucleus is the control center for cellular operations. 16When a codon enters the active site of a ribosome, it attracts other codons.