What makes proteins using coded instructions that come from the nucleus?
Proteins are assembled on ribosomes. The nucleus gives coded instructions to the ribosomes, so they know what proteins to build. An internal membrane system. The ER assembles the lipids that go into building the cell membrane.
What gives the cell instructions for making proteins?
The type of RNA that contains the information for making a protein is called messenger RNA (mRNA) because it carries the information, or message, from the DNA out of the nucleus into the cytoplasm. Translation, the second step in getting from a gene to a protein, takes place in the cytoplasm.
Do proteins come from the nucleus?
In eukaryotes, ribosomes get their orders for protein synthesis from the nucleus, where portions of DNA (genes) are transcribed to make messenger RNAs (mRNAs). An mRNA travels to the ribosome, which uses the information it contains to build a protein with a specific amino acid sequence.
What produces proteins within the cell?
What is the mechanism of protein synthesis?
The basic mechanism of translating the nucleotide code of mRNA into the amino acid sequence of a protein, as performed by the ribosome, is well conserved throughout evolution. The process of protein synthesis can be subdivided into four major steps: initiation, elongation, termination, and ribosome recycling.
Which of the following is an incorrect match between a type of protein and its function?
The incorrect match between a type of protein and its function is antibody: chemical messaging. Antibodies are proteins of the immune system that help defend the body from infection. Chemical messengers are signal proteins such as hormones that coordinate activities throughout the body.
What are the steps of protein synthesis quizlet?
Terms in this set (5)
- FIRST step. DNA unzips between its pairs, then one of the strands of DNA directs the production of mRNA.
- SECOND step. A ribosome attaches to mRNA in the cytoplasm, specific amino acids are attached to the tRNA.
- THIRD step. Molecules of tRNA and amino acids attach to mRNA.
- FOURTH step.
- FIFTH step.
How is the two stage process of protein synthesis advantageous?
The protein synthesis is a two stage process, this reduces the complexity of the process involved in protein synthesis. Explanation: The transcription is the process in which RNA molecules are produced by using the double stranded DNA molecule.
What is meant by protein synthesis?
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. After a polypeptide chain is synthesized, it may undergo additional processing to form the finished protein.