Does protein synthesis occur in the nucleus? What is the role of amino acids in protein synthesis? During the process of protein synthesis each tRNA carries one what? What three organelles are involved in protein synthesis? What is the site of protein synthesis in the cytoplasm?
What is DNA, and what is the role of DNA? Is DNA is the only genetic material in an organism? What is the oldest DNA of any kind ever found? 1. What is the composition of a DNA fragment? 2. What is a DNA fragment made of?
The human microbiome plays a key role in a wide range of host-related processes and has a profound effect on human health. Comparative analyses of the huma... S Greenblum,PJ Turnbaugh,E Borenstein - 《Proceedings of the National Academy of Sciences of the United States of America》 被引量...
What is D-Galactose?Aug 6,2021 D-Galactose is an aldohexose that occurs naturally in the D-form in lactose, cerebrosides, gangliosides, and mucoproteins. D-Galactose is an energy-providing nutrient and also a necessary basic substrate for the biosynthesis of many macromolecules in the body. ...
Here, we introduce the methodology of ribosome profiling and discuss examples in which this approach has been a key factor in guiding biological discovery, including its prominent role in identifying thousands of novel translated short open reading frames and alternative translation products. 展开 ...
Enzyme regulation is a process in which an enzyme's activity is controlled by its substrate concentration. The enzyme's activity level can be increased or decreased by changing the amount of substrate it binds with. To regulate enzymes, cells use a variety of mechanisms, including allosteric regu...
Nutrient starvation, antibiotic stress, heat shock, DNA damage and other kinds of stresses are shown to elicit mazEF-mediated-PCD. ppGpp and extracellular death factor play a central role in regulating mazEF-mediated PCD. The activation of mazEF system is achieved through inhibition of transcription...
What role does DNA play in phenotypic expression in organisms? Explain how the sequence of DNA impacts the function of the gene. Epigenetic changes affect gene expression. What part of the chromatin (or the chromosome) is affected by epigenetic changes? Describe the process of gene expression, ...
What is the function of the trpR terminator? Operon: Operon may be defined as a group of adjacent genes that function in a harmonized manner as a genetic unit. Its components, namely, a promoter, an operator and a structural gene are involved in the transcription process as one unit. ...
Understand how DNA is replicated. Learn why DNA replicates, when DNA replicates, and how DNA replication works. Get an overview of the rates of replication of different cells. Related to this Question What is the role of enzymes in DNA replication?