Answer:
b) biosphere
Explanation:
The biosphere is made of three parts, called the lithosphere, atmosphere and hydrosphere.
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.
C is the answer
:) for your question (im writing extra cause answer is too small)
1 - Habitants
From this term, it is understood that a habitant is someone or something that inhabits a habitat and lives there, in a sense.
2 - Ecosystem
An ecosystem is comprised of biotic and abiotic factors, for instance, rocks, organisms, trees, etc.
3 - Population
A population is the number of organisms in a species or total amount of something/someone in an ecosystem or community.
4 - Food Chain
A food chain represents a chain of how and where food flows within a small ecosystem or community. For instance, a basic food chain can be like this: Sun - Grass - Cow - Human - Decomposers
5 - Food Web
A food web is comprised of multiple food chains and animals/organisms. It depicts how and where energy travels in a more vast manner compared to a food chain.
Hope this helps!
