Which of the following examples illustrates a positive feedback mechanism? a. increasing secretion of oxytocin to accelerate labor contractions
b. alteration of respiratory rates in response to changes in hydrogen ion concentration in
the blood
C. regulation of your blood sugar level by the opposing actions of glucagon and insulin
d. opposing effects of calcitonin and parathyroid hormone in maintaining proper calcium
levels
none of the above answers illustrate a positive feedback mechanism

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

Greenthe fossil record is the history of life recorded byhuman observationgod. climatologists. remains of the past.

In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.