<span>both the living and nonliving components of the biosphere.</span>
Answer:
bacteriophages are very good at injecting foregin DNA into bacteria Genetic Engineers use them to introduce DNA of interest to humans in bacteria
Explanation:
There have been numerous ways that transportation has affected communication over long distances. The postal service has changed significantly over the years. When the post office first opened. The mail was delivered slowly, by horses, carriages, or even ships if overseas. Over the years, mail is delivered overnight by airplanes and semi-trucks. Before transportation, it could months or even years to get a piece of mail, depending on where it being delivered. The opening of the transcontinental railroad also helped to change communication. People could then get to places to see and speak to family or business associates without having to take dangerous methods of transportation. Otherwise, the only way the people could have had any way to communicate would have been by the slow mail system of those days.
Answer:
The corect answer is c can be made by the animal"s body from other substances and is not readily absorbed by the gastrointestinal tract.
Explanation:
Accordings to our body"s demand there are 2 types of amino acids
1 Essential amino acids These amino acids are not synthesized in our body as a result we have to intake them through diet. Example phenylalanine ,methionine,threonine,valine.
2 Non Essential amino acids These amino acids are synthesized within our body as a result there is no requirement to intake them through diet and they are not readily absorbed by the gastrointestinal tract. Example Glycine, Alanine,Serine,Aspartic acid.
Answer:
C
Explanation:
When researching on the lineage of 2 animals from a common ancestor, one can deduce it accurately from DNA samples and various bodily characteristics from the body of the 2 animals in comparison to the common ancestor.
A) Strands of DNA allows for scientist to deduce the percentage similarity between 2 animals. The more similar means that the closer the relatedness is between 2 species.
B) Bones and muscle structure gives one a rough gauge on similarity of both organisms. E.g. Compare human bone, muscle to chimpanzee bone muscle.
C) Comparison of food items is the worst methods as different species may feed on different types of food due to natural selection. E.g. Finch bird example on the galapegos island or sth.
D) growth of embryos of similar animals would have similar developmental stages and changes that is quite distinct to each species, allowing one to deduce the closeness of the 2 animals to a common ancestor.