Explain how the logistic model of population growth has both positive and negative feedback mechanisms.

Expert Solution

gladiator answered 1 year ago

Negative and positive feedback mechanisms used to maintain homeostasis. Describe one negative and one positive feedback...

Negative and positive feedback mechanisms used to maintain homeostasis. Describe one negative and one positive feedback regulation (8pts). For each negative and positive feedback: What is the variable? (0.5pt) What is the normal range? (0.5 pt) Which conditions may change the variable? (0.5 pt) How the changes to be detected? (1 pt) What is/are the responses(s)? (1pt) What is the final effect? (0.5 pt)

a) Explain how positive and negative feedback mechanisms work. (4 marks) ?b) Which mechanism is more...

a) Explain how positive and negative feedback mechanisms work. ?b) Which mechanism is more common in animals? (1 mark)? c) Why is one mechanism more common than the other in animals?

List 10 body mechanisms that are maintained in homeostasis by negative feedback. Why does positive feedback...

List 10 body mechanisms that are maintained in homeostasis by negative feedback. Why does positive feedback usually lead to disease or death? Describe two exceptions to positive feedback leading to disease or death.

A population of fish in a lake follow a logistic growth model. With an initial growth...

A population of fish in a lake follow a logistic growth model. With an initial growth rate of 10%, an initial population of 50, and a carrying capacity of 500, how many fish will be in the pond after 5 years? Solve and graph the solution to this equation. Explain why this differential equation does or does not serve as a realistic model.

Positive feedback mechanisms are used to maintain homeostasis. Describe the positive feedback regulation, the contractions of...

Positive feedback mechanisms are used to maintain homeostasis. Describe the positive feedback regulation, the contractions of labor, and answer the questions below in great detail. (8 pts) For positive feedback: What is the variable? (0.5 pt) What is the normal range? (0.5 pt) Which conditions may change the variable? (0.5 pt) How the changes to be detected? (1 pt) What is/are the response(s)? (1 pt) What is the final effect? (0.5 pt)

4. Explain the difference between a positive and negative hormonal feedback loop. How is the testis...

4. Explain the difference between a positive and negative hormonal feedback loop. How is the testis (i.e. testosterone) regulated ? Explain why giving exogenous testosterone has little effect on serum levels but dramatic lowering of testicular testosterone concentrations. (10 points)

compare and contrast Negative feedback and positive feedback. In 200 words

Discuss homeostasis, both negative and positive feedback and provide examples: Describe the structural hierarchy of the...

Discuss homeostasis, both negative and positive feedback and provide examples: Describe the structural hierarchy of the human body.

Question 1 Positive feedback differs from negative feedback because ________. positive feedback is generally beneficial while...

Question 1 Positive feedback differs from negative feedback because ________. positive feedback is generally beneficial while negative feedback is typically harmful positive feedback tends to enhance the triggering stimulus while negative feedback tends to return the body to a homeostatic balance or "ideal" level positive feedback is critical to health while negative feedback serves only to alert us to potential health threats positive feedback provides moment-to-moment wellbeing while negative feedback causes a cascade effect 2 points Question 2 A substance...

Describe the logistic population growth curve.

Question