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B5: Quiz 5 – Answers
B5: Quiz 5 – Answers
1)
a)
i) The pancreas
ii) Insulin and glucagon
iii) Insulin
iv) Glucagon
b)
i) Glycogen
ii) The liver and muscles
2)
A – glycogen
B – insulin
C – glucagon
a)
i) The pancreas
ii) Insulin and glucagon
iii) Insulin
iv) Glucagon
b)
i) Glycogen
ii) The liver and muscles
2)
A – glycogen
B – insulin
C – glucagon
3)
a) Negative
The controlling of blood glucose concentration is an example of a NEGATIVE feedback system
b)
3)
a) Negative
The controlling of blood glucose concentration is an example of a NEGATIVE feedback system
b)
4) The pancreas will notice that the concentration of glucose in blood is too high. The pancreas will respond to this by secreting insulin into the bloodstream. The insulin travels in the bloodstream to the liver and muscles where it tells them to take glucose out of the bloodstream and turn it into glycogen (the storage unit for glucose); the glycogen will be stored in the liver and in muscles. The removing of glucose from the bloodstream results in blood glucose levels decreasing back to normal/ optimal levels.
5) The pancreas will notice that the concentration of glucose in blood is too low. The pancreas will respond to this by secreting glucagon into the bloodstream. The glucagon travels in the bloodstream to the liver and muscles where it tells them to turn glycogen into glucose. The glucose produced from glycogen will enter the bloodstream, resulting in blood glucose levels increasing back to normal/ optimal levels.
6) The two activities are:
7)
a) The pancreas produces little or no insulin
b) Genetics
c) Insulin therapy is where the individual suffering with type 1 diabetes tests their blood glucose level and injects themselves with insulin if the level of glucose in blood is too high
d) Way 1 – a healthy diet that does not contain excessive carbohydrates (especially sugars)
Way 2 – engage in regular exercise
8)
a) The body becomes unresponsive to the insulin that the pancreas produces
b) Type 2
c) Poor diet (a diet with lots of carbohydrates/ sugars) and obesity
d) Way 1 – a healthy diet that does not contain excessive carbohydrates (especially sugars)
Way 2 – engage in regular exercise
4) The pancreas will notice that the concentration of glucose in blood is too high. The pancreas will respond to this by secreting insulin into the bloodstream. The insulin travels in the bloodstream to the liver and muscles where it tells them to take glucose out of the bloodstream and turn it into glycogen (the storage unit for glucose); the glycogen will be stored in the liver and in muscles. The removing of glucose from the bloodstream results in blood glucose levels decreasing back to normal/ optimal levels.
5) The pancreas will notice that the concentration of glucose in blood is too low. The pancreas will respond to this by secreting glucagon into the bloodstream. The glucagon travels in the bloodstream to the liver and muscles where it tells them to turn glycogen into glucose. The glucose produced from glycogen will enter the bloodstream, resulting in blood glucose levels increasing back to normal/ optimal levels.
6) The two activities are:
- Eating meals (especially those that have a lot of carbohydrates/ sugars)
- Exercise
7)
a) The pancreas produces little or no insulin
b) Genetics
c) Insulin therapy is where the individual suffering with type 1 diabetes tests their blood glucose level and injects themselves with insulin if the level of glucose in blood is too high
d) Way 1 – a healthy diet that does not contain excessive carbohydrates (especially sugars)
Way 2 – engage in regular exercise
8)
a) The body becomes unresponsive to the insulin that the pancreas produces
b) Type 2
c) Poor diet (a diet with lots of carbohydrates/ sugars) and obesity
d) Way 1 – a healthy diet that does not contain excessive carbohydrates (especially sugars)
Way 2 – engage in regular exercise
Questions
1)
a) The controlling of blood glucose concentration involves two hormones.
i) Which gland in the body produces these hormones?
ii) What are the two hormones that this gland produces?
iiI) Which of the two hormones in part aii is secreted when blood glucose concentration is too high?
iv) Which of the two hormones in part aii is secreted when blood glucose concentration is too low?
b)
i) What is the storage molecule for glucose?
ii) Where are the two places in the body where your answer to part bi is stored?
2) Feel free to skip this question!
In the written content, we looked at a reversible reaction for glucose. The partially completed reversible reaction is shown below.
1)
a) The controlling of blood glucose concentration involves two hormones.
i) Which gland in the body produces these hormones?
ii) What are the two hormones that this gland produces?
iiI) Which of the two hormones in part aii is secreted when blood glucose concentration is too high?
iv) Which of the two hormones in part aii is secreted when blood glucose concentration is too low?
b)
i) What is the storage molecule for glucose?
ii) Where are the two places in the body where your answer to part bi is stored?
2) Feel free to skip this question!
In the written content, we looked at a reversible reaction for glucose. The partially completed reversible reaction is shown below.
Here is some information about the gaps A, B and C.
Give the names for A, B and C.
3)
a) Fill in the blank in the sentence below.
The controlling of blood glucose concentration is an example of a ________ feedback system.
b) The graph below shows how blood glucose concentration changes over time.
- A – the storage molecule for glucose
- B – the hormone that causes glucose to be converted to A
- C – the hormone that causes A to be converted to glucose
Give the names for A, B and C.
3)
a) Fill in the blank in the sentence below.
The controlling of blood glucose concentration is an example of a ________ feedback system.
b) The graph below shows how blood glucose concentration changes over time.
Finish off the graph to show how blood glucose concentration changes over time; use part a in this question to help you.
4) A student drinks a sugary drink, which causes the concentration of glucose in his bloodstream to increase. Explain how the body responds to bring the concentration of glucose in blood back down to its optimal level.
5) I have just finished a 10 km run, which has resulted in the concentration of glucose in my bloodstream becoming quite low. How will my body respond to bring blood glucose levels back to the optimal level?
6) What are the two main activities that cause the concentration of glucose in blood to change?
7)
a) What is type 1 diabetes?
b) What is the usual reason why an individual has type 1 diabetes?
c) One way that individuals with type 1 diabetes control their blood glucose concentrations is by using insulin therapy. Describe what insulin therapy is.
d) In addition to insulin therapy, give 2 other ways that individuals with type 1 diabetes can control their diabetes.
8)
a) What is type 2 diabetes?
b) Are the majority of cases of diabetes in the UK type 1 or type 2?
c) What are the two main causes for an individual developing type 2 diabetes?
d) Give 2 ways that an individual with type 2 diabetes can control their diabetes.
4) A student drinks a sugary drink, which causes the concentration of glucose in his bloodstream to increase. Explain how the body responds to bring the concentration of glucose in blood back down to its optimal level.
5) I have just finished a 10 km run, which has resulted in the concentration of glucose in my bloodstream becoming quite low. How will my body respond to bring blood glucose levels back to the optimal level?
6) What are the two main activities that cause the concentration of glucose in blood to change?
7)
a) What is type 1 diabetes?
b) What is the usual reason why an individual has type 1 diabetes?
c) One way that individuals with type 1 diabetes control their blood glucose concentrations is by using insulin therapy. Describe what insulin therapy is.
d) In addition to insulin therapy, give 2 other ways that individuals with type 1 diabetes can control their diabetes.
8)
a) What is type 2 diabetes?
b) Are the majority of cases of diabetes in the UK type 1 or type 2?
c) What are the two main causes for an individual developing type 2 diabetes?
d) Give 2 ways that an individual with type 2 diabetes can control their diabetes.