New
New
Year 10
AQA
Higher

Insulin and the control of blood sugar level

I can describe the role of the hormone insulin in controlling blood sugar level.

New
New
Year 10
AQA
Higher

Insulin and the control of blood sugar level

I can describe the role of the hormone insulin in controlling blood sugar level.

Lesson details

Key learning points

  1. If conditions in the body change too much this can be dangerous to our health (e.g. enzymes).
  2. Homeostasis is the regulation of internal conditions for optimum enzyme activity.
  3. Glucose travels in the blood plasma and is delivered to cells for aerobic respiration.
  4. The hormone insulin helps to keep human blood sugar level constant.
  5. The pancreas secretes insulin when blood sugar level is too high; it causes liver cells to convert glucose to glycogen.

Common misconception

Not linking the idea that glucose concentration is important for cellular respiration, even during times of rest.

There are a selection of slides in LC2 that specifically link glucose and respiration and discuss the idea of respiration occurring during rest.

Keywords

  • Homeostasis - homeostasis is the regulation of the internal conditions to maintain optimum conditions for enzyme action and all cell functions

  • Respiration - a chemical reaction in living organisms that releases energy from glucose

  • Insulin - a hormone secreted by the pancreas when blood glucose is too high, lowering blood glucose levels

  • Glucose - a sugar that travels in the blood and is supplied to cells for respiration

  • Glycogen - a stored form of glucose found in liver and muscle cells

Equipment

None required.

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
What is the name of the sugar that is a reactant for respiration?
glycogen
Correct answer: glucose
oxygen
water
Q2.
Which of the following is a biological catalyst?
starch
catalyser
Correct answer: enzyme
hormone
Q3.
Which gland in the endocrine system is circled in this image?
An image in a quiz
adrenal glands
thyroid gland
ovaries
Correct answer: pancreas
Q4.
Match the activity to the effect it has on blood glucose concentration.
Correct Answer:eating,increases blood glucose concentration

increases blood glucose concentration

Correct Answer:exercising,decreases blood glucose concentration

decreases blood glucose concentration

Q5.
How do hormones travel around the body?
in the red blood cells
along neurones
Correct answer: in the blood plasma
Q6.
In which sub-cellular structure does aerobic respiration take place?
nucleus
Correct answer: mitochondria
ribosomes
chloroplasts

6 Questions

Q1.
Which organ in the body detects changes in blood glucose concentration?
liver
small intestines
Correct answer: pancreas
stomach
Q2.
Which process regulates the internal conditions in the body for optimum enzyme activity?
respiration
digestion
Correct answer: homeostasis
body regulation
Q3.
What is the name of the hormone that the pancreas secretes if blood glucose levels are too high?
Correct Answer: insulin
Q4.
Put these steps in order to show what happens after eating a meal.
1 - Eating causes an increase in blood glucose concentration.
2 - The pancreas detects the increase in blood glucose concentration.
3 - The pancreas secretes insulin into the blood.
4 - Insulin targets the liver and muscle cells.
5 - Blood glucose levels decrease back to normal.
Q5.
What do liver and muscle cells store glucose as?
glucagon
insulin
starch
Correct answer: glycogen
Q6.
Which statements are correct?
Insulin causes glycogen to be converted into glucose.
Correct answer: Exercising and fasting decreases blood glucose concentration.
Correct answer: If respiration rate increases then blood glucose concentration decreases.
Storing blood glucose as glycogen will increase blood glucose levels.