Coordination Response And Homeostasis

9.Complete the sentence.

10.Match each hormone to its function.

11.Name the structure in the skin that contains temperature receptors and sends impulses to the brain.

12.In a motor neurone, what is the name of the fatty layer that insulates the axon in sections, with small gaps (nodes of Ranvier) between them?

13.What is the main function of the central nervous system (CNS)?

14.Which type of neurone carries impulses from the CNS to effectors?

15.Which of the following is NOT a characteristic of a reflex action?

16.Which of the following are effects of adrenaline? (Select all that apply)

17.Homeostasis is the maintenance of a constant external environment.

18.Match each type of neurone to its correct function.

19.Arrange the following events in a reflex arc in the correct order, starting with the stimulus.

20.Which structure in the skin contains temperature receptors and sends impulses to the brain?

21.Which of the following are characteristics of a reflex action? (Select all that apply)

22.A student measures the reaction time of three participants using a ruler drop test. The distances the ruler fell before being caught are: Participant A: 15 cm, Participant B: 20 cm, Participant C: 25 cm. Which participant has the fastest reaction time?

23.Which of the following are effects of adrenaline on the body? (Select all that apply)

24.A reflex action does NOT involve which of the following?

25.Glucagon is a hormone that lowers blood glucose concentration.

26.In a motor neurone, what is the name of the long fibre, insulated by a fatty myelin sheath, that carries the electrical impulse away from the cell body?

27.Which part of the nervous system is made up of the brain and spinal cord?

28.A reflex action is a voluntary, slow response that involves the brain as the coordinator.

29.Which of the following is the correct order of structures involved in a reflex arc?

30.A student is investigating the effect of temperature on the rate of an enzyme-controlled reaction. Which piece of laboratory equipment is most suitable for maintaining a constant temperature of 37°C?

31.Arrange the following events in the control of blood glucose when it falls too low, starting with the detection of low glucose.

32.A student set up an experiment to investigate the effect of temperature on the rate of an enzyme-controlled reaction. They used a water bath set to 37°C. What is the most important reason for using a water bath rather than a Bunsen burner?

33.Which of the following is NOT an effect of adrenaline on the body?

34.A student measures the reaction time of three participants using a ruler drop test. The distances the ruler fell before being caught are: Participant A: 15 cm, Participant B: 20 cm, Participant C: 12 cm. Using the equation distance = (1/2)gt² (with g = 10 m/s²), what is the reaction time of Participant B?

35.The graph shows the effect of temperature on the rate of an enzyme-controlled reaction in the human body. At which temperature does the rate become zero due to enzyme denaturation?

36.A student investigates the effect of temperature on the time taken for a starch solution to be digested by amylase. At 20°C, the starch is digested in 10 minutes. At 40°C, the starch is digested in 3 minutes. Which conclusion is most likely correct?

37.In a reflex arc, the relay neurone is located in the grey matter of the spinal cord.

38.Arrange the following events in the control of blood glucose when it rises too high, starting with the detection of high glucose.

39.In an experiment to investigate the effect of temperature on an enzyme-controlled reaction, a student uses a water bath set to 37°C. What is the most important reason for using a water bath?

40.Which part of the human nervous system consists of the brain and spinal cord?

41.Place the following events in a reflex arc in the correct order, starting with the stimulus.

42.Match each part of the nervous system to its correct description.

43.Place the following events in the control of blood glucose when it rises too high, starting with the detection of high glucose.

44.Which type of neurone is found entirely within the central nervous system and connects sensory and motor neurones?

45.Complete the sentence about homeostasis.

46.Complete the sentence about the nervous system.

47.A person's blood glucose concentration rises from 5.0 mmol/dm³ to 8.0 mmol/dm³ after a meal. The pancreas secretes insulin to bring it back to normal. If insulin reduces the glucose concentration by 0.5 mmol/dm³ per minute, how many minutes will it take to return to 5.0 mmol/dm³?

48.What is the normal human body temperature in degrees Celsius?

49.Complete the sentence about neurones.

50.A person's blood glucose concentration is 5.0 mmol/dm³. After a meal it rises to 8.0 mmol/dm³. By how much (in mmol/dm³) does insulin reduce the blood glucose concentration to return it to normal?

51.Name the hormone produced by the adrenal glands that prepares the body for 'fight or flight'.

52.Describe how the skin helps to cool the body when the temperature rises above 37°C.

53.Explain how negative feedback controls blood glucose concentration when it falls too low.

54.A person's blood glucose concentration rises from 5.0 mmol/dm³ to 8.0 mmol/dm³ after a meal. The pancreas secretes insulin to bring it back to normal. If insulin reduces the glucose concentration by 0.5 mmol/dm³ per minute, how many minutes will it take to return to 5.0 mmol/dm³?

55.What is the normal human body temperature in degrees Celsius?

56.A person's blood glucose concentration is 5.0 mmol/dm³. After a meal it rises to 8.0 mmol/dm³. By how much (in mmol/dm³) does insulin reduce the blood glucose concentration to return it to normal?