Enzymes are the workhorses of the biological world. Simply stated, they are catalyst that speed-up or make possible reactions that otherwise would not occur either fast enough or at all to be meaningful to biological organisms. Without them, life would not exist as we know it....
DNA ___ is the process of using DNA as a blueprint to make a copy of the DNA. What is the biological name given to the proteins associated with DNA? What molecules are present in DNA? What is the name of the synthetic biology technique that can join multiple DNA ...
Implantation is a complex process where a blastocyst stage embryo attaches to the receptive endometrium of the mother and pregnancy begins. For this to occur, there must be total synchrony between the embryo and the endometrium.
Proteins are a second type of intracellular organic molecule. These substances are made from chains of smaller molecules called amino acids, and they serve a variety of functions in the cell, both catalytic and structural. For example, proteins called enzymes convert cellular molecules (whether prote...
As dREAM complexes seem to lack chromatin-modifying enzymes, Brehm, Dyson and colleagues wanted to know whether dREAM complexes repress transcription by binding to histones directly. Indeed, several subunits bound the non-acetylated histone-H4 tail, but they failed to bind when the histone-H4 tail...
serves an important role in the maintenance, repair, and growth of body tissues”，即“通常情况下，蛋白质在人体组织的维持、修复和生长方面起着重要作用。”也就是说，蛋白质对人体组织的生长起着重要作用。这里“an important role”和题文中“a significant position”意思相近。因此，D“蛋白质”正确。
In molecular biology, experimenters work with a handful of proteins鈥攊ncluding polymerases, restriction enzymes, kinases, and phosphatases鈥攊n processing nucleic acids, although the functions of these proteins are not fully understood, which is not absolutely necessary as long as they do function....
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Question: What are the enzymes involved in DNA transcription? Transcription: DNA lives in the nucleus and never leaves it. However, the cell does need instruction from the DNA, and so a copy of the DNA is made which we call mRNA. This process is called transcription. ...
Tautomers are molecules that differ in the position of a hydrogen atom. A tautomeric form of thymine has the structure: If this tautomer, rather than the stable form of thymine, were present in a strand of DNA during replication, what woul...