Hydrogen bonds exists between the DNA strand and its complementary strand such that; there are two hydrogen bonds between every A and T, and three between every C and G.
Therefore; in this case there will be (2 ×3 ) +(3×3) = 15 hydrogen bonds for the above strand. this is because Adenine binds to Thyamine with two bonds (3 pairs) and Guanine binds to Cytosine with three bonds (3 pairs).
There is only one structure feasible for a tetrahedral molecule with such a formula, under the supposition that A is in the center of the tetrahedredon. In this case X and Y are in the vertices of the tetrahedron.
If you draw several figures changing the position of the X's and the Y around the center (A), you will see that all are equivalent.
This is the case of the product CH3Cl, named chloromethane, which, for the same reason given above, does not have isomers.
Answer: endoplasmic reticulum
Explanation:
Prokaryotes ( meaning pro: before and Karyon: for kernel/nut) describes organisms which don’t have a cell nucleus or other organelles surrounded by membranes
Eukaryotes (eu meaning true), are organisms with a cell nucleus and several other organelles surrounded by membranes
Example prokaryotes do not contain: nuclei , Golgi apparatus, chloroplasts, mitochondria, and endoplasmic reticulum
Both may contain a cell wall, flagella, ribosomes, DNA and plasma membranes
