I think the best answer is D
3 amino acids.
Each section of 3 nucleotides (a triad) codes for ones amino acid. There are 3 triads here, there are 3 amino acids coded for this segment. (9/3=3). Divide the number of ‘letters’ by 3
Robert Hooke is the scientist who discovered microscope which helps scientists more in discovering of the cells. During the invention, Hooke carefully controls the height and angle of the microscope he's inventing and also the mechanism of illumination to be make more effective.
A) In a population of bed bugs, variation exists. Some variation provides resistance to the pesticides. Those bed bugs survive to reproduce, passing the resistance on to offspring
Answer:
hypertonic to water and hypotonic to salt solution.
Explanation:
<em>When two solutions of unequal solute concentrations are separated by a permeable membrane, water molecules move from the solution with lower solute concentration to the solution with higher solute concentration until an equilibrium is reached. The solution with higher solute concentration is referred to as being hypertonic while the other one is referred to as being hypotonic.</em>
The cells of celery stalks have higher solute concentration in their cell saps compared to the surrounding fresh water. Hence, water keeps entering the cells, resulting in turgidity. The cells are therefore hypertonic to fresh water.
The salt solution however seemed to have more solute concentration compared to that of the cell sap of the celery stalks. This made the cells of the celery stalks to lose water to the surrounding solution, resulting in flaccidity. Hence, the cells are hypotonic to salt solution.