Answer:
Explanation: The concentration of the solute in the solution is lower than the concentration inside the cell. ... When a cell is placed in this solution, water will enter the cell by osmosis causing it to swell. 3. The concentration of the solute in the solution is the same as the concentration inside the cell.
Gibberellic acid is a natural growth hormone present in plants which helps plants to control growth naturally. Spraying additional gibberellic acid helps to stimulate plant growth. So even if it is not sprayed externally, the natural acid present in the plants still controls the growth.
Explanation:
Gibberellic acid (gibberellin) is naturally found in growing apical regions like the shoots, new young leaves, flowers. In the shoots, it helps to increase the inter-node length and thereby increases elongation of a plant through apical growth. They control the growth by acting as chemical messengers.
Farmers usually spray gibberellic acid during seed germination to accelerate plant growth, budding processes, increase foliage and flowering. Spraying farms with bioactive gibberellins have led to a huge increase in plant growth leading to the green revolution.
A point mutation showing a change in the DNA sequence but producing the same protein is called the silent mutation.
Mutation is any change in the genetic composition of the organism caused by mutagens. A point mutation is a type of mutation involving the change in a single nucleotide base either by insertion or deletion in a DNA. At the level of protein synthesis, it can be classified into silent mutation, missense mutation and nonsense mutation.
Silent mutations are considered as the neutral mutations as they result in a new codon (a triplet nucleotide sequence on RNA) which codes for the same amino acid and thus not altering the protein. Because of this, they do not exhibit any change in the phenotype of the organism. Missense mutations involve base substitutions which code for a different amino acid and nonsense mutations have substitutions which terminate protein synthesis prematurely thus affecting the protein being synthesized.
Thus, silent mutation is a type of point mutation producing the same amino acid.
Answer:
C the shapes of continents appeared to allow them to fit together