Basic Science
@sciencebasics
Everyone is curious! Learn a new fact with every tweet. The world around you is more complicated than it seems.
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Once the RNA polymerase has copied the DNA into RNA, the RNA will leave the #nucleus to be #translated into a #protein by the #ribosomes.
RNA polymerase is a #protein that binds single #nucleotides together. #transcription is the first step in gene expression.
The #transcription factor signals to a protein called RNA polymerase to copy the DNA into an RNA message. #science #biology #genes
#transcption factors are #proteins that bind to a portion of DNA called the promotor (it promotes transcription!). #science #biology
So #transcription is the process of making a messenger RNA (or mRNA) from DNA. How does that happen? #science #biology #cells
#Ribosomes are the #organelles in the #cell that translate the #codons of mRNA into #proteins. goo.gl/e5LH8y #science #awesome
The first #codon is always AUG, which stands for the amino acid methionine. goo.gl/Ok4z00 #translation #science #DNA
Messenger RNA leaves the #nucleus to be translated into a #protein. Every 3 #nucleotides, or #codon, stands for one amino acid. #translation
Nucleic acids are made of a sugar (ribose or deoxyribose), phosphate group, and nitrogenous base (A, U, T, G, or C). goo.gl/4KK8CH
DNA stands for deoxyribonucleic acid, while RNA stands for ribonucleic acid. RNA is made of 4 nucleic acids too: U, A, G, and C. #science
#transcription is the process of making a messenger (mRNA) from the DNA. #science
Since almost nothing is allowed near the DNA, the cell sends messages from the nucleus about which proteins need to be made. #transcription
Nucleic acids are the building blocks of DNA. Think of A, T, G, and C as 4 different flavors of nucleic acid. #science #life #amazing
DNA holds the blue prints for all of the proteins you can make in a code made of 4 components called nucleic acids: A, T, G, and C. #science
The nucleus is where your DNA lives. Your DNA is so important that the nucleus has two membranes to protect it #biology #science
Cells are so interesting that people make movies about them! goo.gl/a44QsN #science #biology #life #amazing #fuckyeahscience
Mitochondria make energy for cells from sugar. Mitochondria have their own DNA. They used to be their own organism! goo.gl/7z66eS
The organelles float around in liquid called cytoplasm. goo.gl/5ZXY0D #science #cells #sciencefacts
Cells have tiny structures called organelles that each have a job to do in the cell. Organelles are surrounded by a cell membrane. #science
What is a cell? A cell is the smallest unit of life! Every organism is made up of one or more cells. Humans are made of trillions!
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