The heart gets its nourishment through nutrient rich blood through the <span>myocardium. Eating heart healthy foods full of omega 3's will help keep the heart healthy.
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1. Electrons travel around the nucleus in fixed energy levels with energies that vary from level to level
2.protons, neutrons, and electrons have a mass, but electrons have far less mass
3.cations and protons
4. idk
Answer:
b. A second marker in the knock-out cassette, that if inserted into the genome results in cell death when plated on selective media.
Explanation:
General recombination, also known as homologous recombination, refers to the naturally occurring process of exchange of genetic material between pairs of homologous DNA sequences. This process (homologous recombination) can be exploited by genetic engineering to insert DNA segments of interest at target genes. Moreover, a cassette is a mobile DNA segment containing almost a gene and a recombination site, which is integrated into the <em>locus</em>/<em>loci</em> of interest by homologous recombination. A cassette may contain a DNA segment called 'negative marker' which prevents growth under particular conditions, while a positive marker permits growth under certain conditions. In consequence, a second marker consisting of a drug cassette may be used as a negative marker in order to evidence its insertion by inducing cell death when they are plated in selective conditions.
The answer depends on the interpretation and understanding of the phylogenetic trees. The image shows the rooted phylogenetic tree consisting of the various kinds of organisms. The rooting of the tree is done by looking at how closely two species are related to each other. The species within a larger branch or archae are more similar to each other than with the species of the eukarya branch. The distance between the different branches of the tree also indicate how different they are. Larger the distance, the less related they become.
Explanation:
Enzymes. Most enzymes are proteins and therefore their function is specific to their structure. ... The enzyme binds with the appropriate substrate only in the correct alignment and orientation to connect the molecules. The resulting enzyme-substrate complex enables the reaction to occur.
