Are gametophytes made up of somatic cells? If so, can they pass on a mutation? Is the nucleolus a plant cell or a animal cell? Do polymorphisms in the genes encoding MHC molecules most likely to result in the r
The monosaccharides are simple sugars that undergo polymerization of form complex sugar molecules called the polysaccharides. A monosaccharide may contain three to seven carbon atoms, in a straight-chain or a ringed structure. The monosaccharides that play the most important role in the human ...
Heparin is a widely used anticoagulant which inhibits factor Xa and thrombin through potentiation of antithrombin. We recently identified that the nucleic acid stain SYTOX reacts with platelet polyphosphate due to molecular similarities, some of which ar
circRNAs are stable, evolutionarily conserved, and single-stranded RNA molecules. Unlike linear RNAs, circRNAs are closed-loop type RNAs with joined 3′ and 5′ ends44. There are four types of circRNAs, namely exonic circRNAs (ecircRNAs), circular intronic RNAs (ciRNAs), exon–intron circRNAs ...
are complementary to characteristic fragments of known DNA or RNA sequences. These characteristic fragments are arranged in sets called probes [49]. A sample containing DNA or RNA molecules is spread on the surface of a microarray and its components hybridize specifically with their complementary ...
Not only is it a vital component of cell membranes without which the cell cannot function, but it is also the precursor to all steroid hormones, bile acids, and oxysterols, which by themselves are important regulatory molecules in many metabolic pathways. Cholesterol and fatty acids as building...
Embedded in the nuclear envelope as a 120 MDa modular structure, the nuclear pore complex (NPC) performs its unique role in bidirectional transport of molecules between the nucleus and the cytoplasm (for review seeSimos and Hurt 1995). Two major groups of repeat-containing nucleoporins, either ...
Additionally, we analyzed the phenotype of liver sinusoidal endothelial cells (LSECs) by assessing gene expression levels of landmark LSEC-specific markers and cell adhesion molecules in the liver. Increased expression of von Willebrand factor (Vwf), Cd34, and fibrillin-1 (Fbn1), together with ...
At which stage of the cell cycle are chromosomes attached to the spindle and lined up along the middle of the cell? What is the process in which identical copies of the two DNA molecules which make up the chromosome are produced?
What enzyme is responsible for making mRNA in a cell? What do we call a type of enzyme which recognizes and cuts DNA molecules at specific nucleotide sequences. Explain the mechanism by which DNA is replicated. (a) What are the different enzymes used in DNA replication? (b)...