BIO


CURRICULUM:

Standards, Benchmarks
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Read the text carefully and select the word that completes the sentence. Once completed, re-read the section to be sure that the paragraph makes sense.

Let’s look at how a cell makes proteins. The process is completely controlled by enzymes and involves your cells DNA, RNA and raw materials such as Amino Acids. The first step in the process is the production of mRNA. Making mRNA occurs in the nucleus and is called . Because DNA and RNA are written in the same language, producing RNA only requires the genetic code to be rewritten, thus it's name. The next step in making a protein is for the mRNA to move from the nucleus to the cytoplasm. To do this, the mRNA must pass through the pores in the nuclear membrane. The mRNA will move to the , where protein synthesis will be coordinated. Protein synthesis is called Translation. RNA is in the language of Nucleotides, where Protein is in the language of Amino Acids. Because these two are “written” in different languages, making proteins is referred to as Translation. On the Ribosome, mRNA and tRNA will match up their complementary triplets. An mRNA triplet, is a three base sequence called a . The tRNA complement to that is called it’s . Each tRNA will transfer one Amino Acid from the cytoplasm to the Ribosome. As the tRNA molecules are lined up by their Anitcodon sequence, the Amino Acids that they are carrying are put in a specific order as well. When two Amino Acids are lined up, they are bonded together. As more and more tRNA molecules bring more Amino Acids, the strand of Amino Acids grows. This growing strand of Amino Acids is our new .


Scroll down to view the answers below-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Let’s look at how a cell makes proteins. The process is completely controlled by enzymes and involves your cells DNA, RNA and raw materials such as Amino Acids. The first step in the process is the production of mRNA. Making mRNA occurs in the nucleus and is called transcription. Because DNA and RNA are written in the same language, producing RNA only requires the genetic code to be rewritten, thus it's name. The next step in making a protein is for the mRNA to move from the nucleus to the cytoplasm. To do this, the mRNA must pass through the pores in the nuclear membrane. The mRNA will move to the Ribosome, where protein synthesis will be coordinated. Protein synthesis is called Translation. RNA is in the language of Nucleotides, where Protein is in the language of Amino Acids. Because these two are “written” in different languages, making proteins is referred to as Translation. On the Ribosome, mRNA and tRNA will match up their complementary triplets. An mRNA triplet, is a three base sequence called a codon. The tRNA complement to that is called it’s anticodon. Each tRNA will transfer one Amino Acid from the cytoplasm to the Ribosome. As the tRNA molecules are lined up by their Anitcodon sequence, the Amino Acids that they are carrying are put in a specific order as well. When two Amino Acids are lined up, they are bonded together. As more and more tRNA molecules bring more Amino Acids, the strand of Amino Acids grows. This growing strand of Amino Acids is our new Protein.

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