Periderm is the corky outer layer of a plant stem which the plant creates as a result of an injury or infection so as to protect itself further. Protoderm is the thin layer which covers embryos, as well as the root and stems, and later produces epidermis, which is the outer layer of tissue of plants (anywhere where periderm doesn't cover them).
Transfer of newly created plasmids to e coli. The bacteria that contains a plasmid with antibiotic resistance will grow in the presence of antibiotic concludes that the insertion was successful.
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<u>Explanation:</u></h3>
The plasmid DNA that contains the foreign DNA when integrated with the competent bacteria which is e coli and heated, plasmid DNA will be entering into the bacteria by means of some smaller pores that are created in the membranes of the cell.
The plasmid DNA will be copied many times with the help of the replicating mechanism of DNA of the bacteria. Bacteria will grow on a nutrient rich food called agar after the transformation process. Those bacteria that contains a plasmid containing antibiotic resistance only grow in the antibiotic presence. Transformed bacteria will then grow in larger quantity.
Answer:
B and C
Explanation:
Cells are the simpliest level of life and they make up tissues. They are made up of <em>cell organelles</em> not organs so it cannot be D (in case you were confused).
Hope this helped!
This is called the myelin sheath.
Answer:
peaks and valleys show population increase and decrease between 2 species or more.
Explanation:
the peaks and valleys are used to show predation hence if there is an increase in prey there will be an increase in the predators and if there is a decrease in prey there will be a decrease in predators therefore creating peaks and valleys in that graph hence demonstrating population interactions between the two species.
