Answer:
Option (a).
Explanation:
Counter current flow may be defined as the flow of water in the opposite direction with the flow of blood in the body. This countercurrent flow is generally occurs in fishes.
The one main benefit of the countercurrent flow is the absorption of maximum oxygen as the water flows inside the body. Approximately, three time more oxygen is extracted during the counter current flow. The concentration gradient is maintained up to the whole length of gills.
Thus, the correct answer is option (a).
Explanation:
no 3 is the correct answer I think...
Answer:
C. average distance between variable scores and the mean in a set of data
Explanation:
The standard deviation is used to find how far data points are from the mean. This can be used to create a bell curve, which represents what percentile data points are relative to the set. A bell curve shows how the data points are distributed. Standard deviation can be found from an entire data set or just a sample.
For the answer to the question above,
<span>The only taxon in which the biological characteristics are clearly identifiable is the <em><u>"species".</u></em></span>
Answer:
3'-TTACGATG-5'
Explanation:
The DNA sequence is in couples where A is united T and G is united C, so what we do is replace in the complementary sequence the original nucleic acids, remember A-T, G-C.
5'-AATGCTAC-3'
3'-TTACGATG-5'
To remember: the DNA sequence is 5'-3' in one sequence and its complementary is inverse, what means it goes 3'-5'.
Also the T-A is united by 2 hydrogen bonds, and G-C is united by 3 hydrogen bonds.
