Answer:
human embryonic stem cells are obtained from embryos, thereby they are subject to ethical, religious, political and legal considerations
Explanation:
Human embryonic stem cells (HESCs) are pluripotent undifferentiated cells derived from blastocyst-stage embryos, which have the ability to produce any type of somatic cells. HESCs are obtained <em>in vitro</em> from embryos that are 5-6 days old. These cells are valuable tools in research in order to understand the genetic and physiological mechanisms of human development, as well as to develop treatments against diseases. The use of embryonic stem cells in research is controversial because these techniques involve the destruction of human embryos, and there are people who consider human life begins with the formation of the diploid zygote after fertilization, thereby raising the debate if a human embryo can be regarded as a human being.
<span>nuclear as in the sun. It heats up the organic material until nitrogen is released as it decomposes. Nitrogen recirculates back into the air supply. </span>
Answer:
Restriction enzymes are DNA-cutting enzymes. Each enzyme recognizes one or a few target sequences and cuts DNA at or near those sequences.
Many restriction enzymes make staggered cuts, producing ends with single-stranded DNA overhangs. However, some produce blunt ends.
DNA ligase is a DNA-joining enzyme. If two pieces of DNA have matching ends, ligase can link them to form a single, unbroken molecule of DNA.
In DNA cloning, restriction enzymes and DNA ligase are used to insert genes and other pieces of DNA into plasmids.
Explanation:
Answer: option c is the correct one
Explanation:1) Fungi => heterotrophic eukaryotic organisms
2)Plantae=>autotrophic multicellular eukaryotes with cell wall
In nuts the distribution of saturated and unsaturated fats from the highest to lowest amounts is; Monounsaturated, polyunsaturated, saturated. Fatty acids are made up of long chains of carbon and hydrogen. Saturated fatty acids contains each carbon having maximum number of hydrogen bongs, there is no double or triple bond between carbon atoms. Monounsaturated fatty acids are those that contain either 1 triple bond or 1 double bond in the structure, while poly unsaturated are those that contains more than two double bonds or tripple bonds.
