gcse grade
TRANSCRIPT
GCSE
Biology - (Foundation)
Grade
MaterialsFor this paper you must have:
RulerPencil and RubberScientific calculator, which you are expected to use when appropriate
InstructionsAnswer all questionsAnswer questions in the space providedAll working must be shown
InformationThe marks for the questions are shown in brackets
Name:
Edexcel
Mark
Date:
Topic 7 - Test 3
COORDINATION & HOMEOSTASIS
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Questions
Q1.
Figure 7 shows a nephron from a kidney.
Figure 7
(i) Where is most of the glucose selectively reabsorbed?
(1)
A structure A
B structure B
C structure C
D structure D
(ii) Explain how substances move from the glomerulus into the Bowman's capsule.
(2)
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(Total for question = 3 marks)
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Q2.
Figure 7 shows a nephron from a kidney.
Figure 7
Organ donation and kidney dialysis are two treatments for kidney failure.
(i) Give one reason why people who are still alive can donate a kidney.
(1)
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(ii) During kidney dialysis, blood from a patient is passed through a dialysis machine.
Describe how the blood leaving the dialysis machine is different from the blood entering it.
(2)
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(Total for question = 3 marks)
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Q3.
The government is trying to reduce the level of sugar in processed food by 20%.
(i) A biscuit contains 7g of sugar.
Calculate the mass of sugar in this biscuit if the mass of sugar is reduced by 20%.
(3)
........................................................... grams
(ii) One aim of reducing sugar levels in food is to reduce the number of people with type 2diabetes.
Figure 8 shows the percentage of males and females of different ages diagnosed with type 2diabetes in England.
Figure 8
Describe two trends shown in Figure 8.
(2)
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2 ..........................................................................................................................................
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(iii) Explain why reducing the level of sugar in food should decrease the number of peopledeveloping type 2 diabetes.
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(iv) Food products that are lower in sugar will help people with type 1 diabetes to control theircondition.
Give one other way that type 1 diabetes is controlled.
(1)
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(Total for question = 10 marks)
Q4.
Thermoregulation is an important process of the human body.
Figure 6 shows a model of human skin.
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Figure 6
(a) Explain how part A is involved in thermoregulation.
(2)
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(b) Which part of the brain contains the thermoregulatory centre?
(1)
A cerebellum
B cerebral cortex
C hypothalamus
D medulla
(Total for question = 3 marks)
Q5.
Insulin is produced by an endocrine gland and is transported in the blood.
State one cause of type 1 diabetes.(1)
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(Total for question = 1 mark)
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Q6.
Insulin is produced by an endocrine gland and is transported in the blood.
A scientist is planning to test a new treatment for type 2 diabetes.
She selects 300 volunteers who have type 2 diabetes.
State two other factors that the scientist should consider when selecting the 300 volunteers.
(2)
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2 ..........................................................................................................................................
(Total for question = 2 marks)
Using the information in the diagram and your own knowledge, describe the stages of themenstrual cycle.
(6)
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Q7.
* The diagram shows the level of two hormones involved in the menstrual cycle and the thickness of the uterus lining.
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(ii) Explain the response of a person's muscles to a drop in external temperature.
(2)
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(Total for question = 4 marks)
Q9.
The kidneys and bladder are part of the human urinary system.
(i) Kidneys remove waste products, including urea, from the body.
Use words from the box to complete the sentences.
(3)
Urea is produced in the ........................................................... .
Urea is produced when excess ........................................................... are broken down.
Urea travels to the kidney and is filtered from the blood in the ........................................................... .
Q8.
Homeostasis includes thermoregulation and osmoregulation.
(i)) Describe why thermoregulation is importa (2)
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Explain what happens in the nephron to make sure that glucose is not present in urine.
(2)
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(ii) Glucose is filtered from the blood but is not normally present in urine.
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