Explanation:
Percentage w/v means that weight of solute present in 100 ml of a solution. Hence, 15% w/v means that 15 gram of solute per 100 ml of solution.
Hence, for 2 L (or 2000 mL) preparation the amount of mass will be calculated as follows.

= 300 g
Thus, we can conclude that weight of Tris-HCL required is 300 g.
Answer:
10
Explanation:
The ratio between the somatic cells and gametes is 2:1. Therefore, since the somatic cell has 20, the gamete would have half: 10.
Answer:
insect is small and lives on land and the fish lives in water
Explanation:
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Answer:
The hemolytic anemia is a disorder in which the destruction of the RBCs is faster than their production of the RBCs. Hemolysis is the term used for the destruction of the RBCs.
The body of an individual produces antibodies if it senses or there is an antigen that is foreign to the body that helps in the destruction or removal of the particular antigen with the help of antibodies or B cells.
Rh(D) antigen is foreign to the Rh-negative woman as her RBCs surface lack the D antigen so if RBCs expressed to mother blood, IgG production begins and travels to the fetus through the placenta and start destroying RBCs of the fetus. Hemolysis of fetus results in hemolytic anemia and some times death of the baby.
Answer:
D: Minimize Harm To Animals
Explanation: