In some cases, positive feedback systems carry the mechanism for their own destruction without being fatal to the organism, but to a part of the organism. Which one of the following is example to this? Select one: a. Ovulation b. Myotatic spinal reflex c. Bronchiole constriction d. Regenerating ulcerations

In some cases, positive feedback systems carry the mechanism for their own destruction without being fatal to the organism, but to a part of the organism. Which one of the following is example to this? Select one: a. Ovulation b. Myotatic spinal reflex c. Bronchiole constriction d. Regenerating ulcerations

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter1: Invitation To Biology

Section: Chapter Questions

Problem 4SQ: A process by which an organism produces offspring is called __________. a. reproduction b....

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Which of the following is a function of the reproductive system? (A) to produce all of the body's hormones (B) to regulate body temperature (C) to make hormones that fight disease (D) to regulate the development of male and female characteristics
Which of the following is an example of a negative feedback loop? a) shivering in response to a cold b)platelets responding to a cut c) childbirth d) lactation
Which of the following is an example of negative feedback?a. Uterine contractions increase as labor progresses.b. Insulin decreases blood sugar levels after a meal is eaten.c. Sweating increases as body temperature drops.d. Platelets continue to plug an opening in a blood vessel untilblood fl ow stops.
Which of the following statements about reproduction in humans is correct? (a) Fertilisation takes place externally. (b) Fertilisation takes place in the testes. (c) During fertilisation egg moves towards the sperm. (d) Fertilisation takes place in the human female.
a positive-feedback system is one in which a. a variable is charged in the opposite direction to the original change that initiated the system b. a variable is changed in the same direction as the original change that initiated the system c. two opposiding variables are played against each other d. the initiating variable is always increased
Which of this statement is INCORRECT regarding the function of hormones?a) Reproduction and sexual differentiationb) Maintenance of internal environmentc) Maintain body temperatured) Development and growth
Which of the following statements regarding negative feedback is false?a. It helps regulate variables such as body temperature and bloodpressure.b. It is the mechanism by which birth occurs in mammals.c. It is a major feature of homeostatic control systems.d. It prevents homeostatic responses from overcompensating.e. It may occur at the organ, cellular, or molecular level.
Labour is controlled by the nervous and endocrine systems through a positive feedback system.In which example have we encountered another positive feedback system in Biology 30? a. Reflex loop in the PNS b. FSH levels during sperm production c. Progesterone during menstruation d. Prolactin during lactation
Which of the following characterizesparthenogenesis?(A) An individual may change its sex during itslifetime.(B) Specialized groups of cells grow into newindividuals.(C) An organism is first a male and then a female.(D) An egg develops without being fertilized.
Which of the following statements is false? Hormones are excreted via tubes The pancreas is an accessory digestive organ The alveoli are sites of gas exchange Examples of gametes are sperm and egg cells
Which is an example of negative feedback? a. lowering of blood glucose after a meal b. blood clotting after an injury c. lactation during nursing d. uterine contractions during labor
Negative feedback occurs when ______. A Na+ entry through voltage-gated channels stimulates more voltage-gated channels to open B oxytocin secretion in response to stretching of the cervix causes the uterus to contract C platelet activation in response to blood vessel damage stimulates further platelet activation D heat production through shivering increases the body temperature and stops shivering