A SOLUTION CONTAINS 20g OF SOLUTE IN 180g OF SOLVENT. IF THE SOLVENT IS WATER, WHAT IS THE CONCENTRATION OF THE SOLUTION IN TERMS OF MASS BY MASS PERCENTAGE
A. 11.% B. 22.2% C. 10% ✓ D. 20% The answer to the question is: C. 10% The mass by mass percentage of a solution is calculated by dividing the mass of the solute by the total mass of the solution (solute…
THE ACTIVITY OF PTYALIN IS LIKELY TO DECREASE WITH AN INCREASE IN THE CONCENTRATION OF
A. oxygen B. starch C. protein D. acid ✓ The answer to the question is: D. acid The activity of ptyalin, an enzyme found in saliva that helps break down starches into simpler sugars, is likely to decrease with an increase in the concentration…
WHEN A CELL IS PLACED IN SOLUTION AND THE SIZE OF THE CELL INCREASES, THE CONCENTRATION OF SOLUTION IS SAID TO BE
A. isotonic B. dilute C. hypotonic ✓ D. hypertonic The answer to the question is: C. hypotonic When a cell is placed in a solution and its size increases, the concentration of the solution is said to be hypotonic. In a hypotonic solution, the…
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