Washing dishes provides a low level of physical exercise.
A) Hypertonic environment
B) Lower pH
C) Depletion of nutrients
D) Lower osmotic pressure
Answer:
A) Hypertonic environment
Explanation:
A hypertonic environment or solution contains more solute than solvents, that is, the solution in the environment has more dissolved particles, such as salt or sugar. Microorganisms are unlikely to survive in a hypertonic solution as water would be drawn out of the ells of the mircoorganisms, causing their cells to shrink.
Salts and sugars are used in preserving foods as they create a hypertonic environment that is unfavorable to bacteria and fungi that cause food spoilage.
Answer:
Positive feedback
Explanation:
Positive feedback is a process taking place in the organisms during which the output or the end product of the process causes the process or action o occur continuously or it stimulates the process to go on. A loop of action is formed during the positive feedback mechanism.
During labour, the production of oxytocin hormone plays an important role in the uterine contraction which allows the birth of the baby.
The production of oxytocin during labour is considered positive feedback as the oxytocin-induced contraction and the contraction causes more oxytocin to be released until the baby is born.
Thus, Positive feedback is the correct answer.