• 犀牛首页
  • IB课程
  • AP课程
  • G5笔面试
  • AMC竞赛
  • HMMT竞赛
  • 物理碗竞赛
犀牛教育
  • IB物理真题
  • IB数学真题
  • IB化学真题
  • IB生物真题
  • IB经济真题
  • IB地理真题

IB生物真题

首页 > IB > IB生物 > IB生物真题

2010年5月IB生物SL真题下载-Paper3

2021-07-21

2010年5月IB生物SL真题下载-Paper3

A1. A study was made to look at the effect of breastfeeding on infant health. The infants studied were all healthy at birth. They were classified as never breastfed, partially breastfed or only breastfed, based on their feeding status in the first three months of life. The frequency of health care use was assessed for each of these groups, for three illnesses (lower respiratory infection, middle ear infection and gastroenteritis).

The table below indicates the frequency of initial and follow-up visits to the doctor, prescription of medication and hospitalizations during the first year of life. Follow-up visits and medication were seldom needed for gastroenteritis.

(a) Using the data, identify the illness

(i) that causes the greatest healthcare use in the first year of life.

(ii) for which breastfeeding causes the greatest reduction in visits to the doctor.

(b) Compare the health effects of only breastfeeding with partial breastfeeding, using the data in the table.

(c) Suggest how the composition of breast milk and artificial milk may have contributed to these results.

 

A2. (a) State the energy content of 100 g of carbohydrate, fat and protein.

Carbohydrate:

Fat:

Protein:

(b) Explain the possible health consequences of diets rich in fats.

(c) Outline the consequences of protein deficiency malnutrition.

 

A3. (a) List two dietary sources of vitamin D.

(b) Discuss exposure to sunlight as a source of vitamin D.

A4. Outline the concept of food miles.

 

B1. A study was carried out to assess the effects of high-intensity interval training on heart rate. 20 subjects were randomly assigned to two groups: training and control. They underwent a test in which the exercise became harder and harder until they reached the point of exhaustion (progressive incremental test). The training group then performed nine sessions of high intensity interval training on a cycle ergometer during three weeks (1 minute at 130 % of maximal aerobic work rate with 1 minute rest intervals until they felt they were at the point of exhaustion). The control group did not do any training. Both groups then repeated the progressive incremental test.

The graphs below show the mean heart rate curves during progressive incremental tests before and after training.

(a) State three factors that would have to be considered when selecting the subjects used in this study.

(b) Describe the relationship between workload and heart rate shown by the graphs.

(c) (i) Calculate the change in mean heart rate at a workload of 90 W in the training group before and after three weeks of training.

(ii) Deduce the effect of training on heart rate.

 

B2. (a) The diagram below shows an elbow joint.

(i) On the diagram, label a pair of antagonistic muscles.

(ii) State the function of the structure labelled A.

(b) Explain the role of ATP in the contraction of skeletal muscle.

 

B3. (a) Define tidal volume.

(b) Outline the effects of training on the pulmonary system.

 

B4. Discuss the need for warm-up routines.

2010年5月IB生物SL真题余下省略!


你可能还关注

  1. IB生物学习内容/难点一文搞懂!哪些学生适合学IB生物?犀牛教育IB暑假班等你来! 2023-04-17   
    IB生物是IB学生必选的科目,作为很多申请生物专业学生的优势科目。IB生物学习的内容是什么?哪些学生适合学习IB生物?学习IB生物的难点有哪些?IB生物培训课程哪里找?犀牛教育IB暑假
    详情阅读
  2. 2020年11月IB生物SL真题下载-Paper3 2021-07-28   
    2020年11月IB生物SL真题下载-Paper3
    详情阅读
  3. 2020年11月IB生物SL真题下载-Paper2 2021-07-28   
    2020年11月IB生物SL真题下载-Paper2
    详情阅读
  4. 2020年11月IB生物SL真题下载-Paper1 2021-07-28   
    2020年11月IB生物SL真题下载-Paper1
    详情阅读
  5. 2019年11月IB生物SL真题下载-Paper3 2021-07-28   
    2019年11月IB生物SL真题下载-Paper3
    详情阅读

扫码免费下载真题

IB生物真题

  • IB生物学习内容/难点一文搞懂!哪些学生适合学IB生物?犀牛教育IB暑假班等你来!
  • 2020年11月IB生物SL真题下载-Paper3
  • 2020年11月IB生物SL真题下载-Paper2
  • 2020年11月IB生物SL真题下载-Paper1
  • 2019年11月IB生物SL真题下载-Paper3
  • 2019年11月IB生物SL真题下载-Paper2
犀牛国际

犀牛国际(X-NEW),由业内多名教学专家共同组建,不乏来自加州理工大学、剑桥大学、清华大学、北京大学、复旦大学、新加坡国立大学等国际一流大学。 其中有博士、硕士的学历老师众多,学术功底扎实,有的已经执教十余年,国际领域经验丰富。

国际学科

  • IB课程辅导