<ul><li>QUESTION 1: </li></ul><ul><li>In which of the following parts of a plant does meiosis occur? </li></ul><ul><li>Ant...
<ul><li>QUESTION 2: </li></ul><ul><li>What is the name of the fine thread-like structure found in the nucleus of the cell?...
<ul><li>QUESTION 3: </li></ul><ul><li>Which of the following matches correctly the cell division process and the place thi...
<ul><li>QUESTION 4 : Which of the following shows the ratio of the number of chromosomes in a sperm to that of chromosomes...
<ul><li>QUESTION 5 : The zygote of a mouse has 40 chromosomes. How many chromosomes are there in the skin cell and gamete ...
<ul><li>QUESTION 6: </li></ul><ul><li>Meiosis causes variation in an organism because……………………. </li></ul><ul><li>Crossing ...
<ul><li>QUESTION 7: </li></ul><ul><li>Cromosomes in the liver cells of a female human being are </li></ul><ul><li>22 + X <...
<ul><li>QUESTION 8: </li></ul><ul><li>What is the percentage of a husband and wife having a male child and a female child ...
<ul><li>QUESTION 9 : Which of the following shows the chromosome make-up in a zygote which will develop into a male baby? ...
<ul><li>QUESTION 10 : Which of the following statements is true about non-identical twins? </li></ul><ul><li>Two ova are f...
<ul><li>QUESTION11 : Albinism is caused by… </li></ul><ul><li>Mutation to the gene which controls the skin colour </li></u...
<ul><li>QUESTION 12 : A skin cell of a baby contains 47 chromosomes. Which of the following genetic diseases is the baby s...
<ul><li>Question 14 : A cell division process produces four daughter cells from a parent cell. In which of the following p...
<ul><li>Question 13 : A change which occurs spontaneously to the structure of gene or chromosome in the nucleus of an orga...
<ul><li>Question 15 : Which of the following statements is/are true about mitosis? </li></ul><ul><li>It only occurs in som...
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Revision chapter 3

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revision chapter 3 science 4ICT2

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Revision chapter 3

  1. 2. <ul><li>QUESTION 1: </li></ul><ul><li>In which of the following parts of a plant does meiosis occur? </li></ul><ul><li>Anther </li></ul><ul><li>Stigma </li></ul><ul><li>Shoot </li></ul><ul><li>Root </li></ul>
  2. 3. <ul><li>QUESTION 2: </li></ul><ul><li>What is the name of the fine thread-like structure found in the nucleus of the cell? </li></ul><ul><li>Gene </li></ul><ul><li>Cell membrane </li></ul><ul><li>Chromosome </li></ul><ul><li>Nuclear membrane </li></ul>
  3. 4. <ul><li>QUESTION 3: </li></ul><ul><li>Which of the following matches correctly the cell division process and the place this divisions take place? </li></ul>Cell division Place that cell divisions occurs A Mitosis Heart B Meiosis Skin C Mitosis Sperm D Meiosis Liver
  4. 5. <ul><li>QUESTION 4 : Which of the following shows the ratio of the number of chromosomes in a sperm to that of chromosomes in a skin cell? </li></ul><ul><li>1:1 </li></ul><ul><li>1:2 </li></ul><ul><li>2:1 </li></ul><ul><li>2:2 </li></ul>
  5. 6. <ul><li>QUESTION 5 : The zygote of a mouse has 40 chromosomes. How many chromosomes are there in the skin cell and gamete of a mouse? </li></ul>Skin cell Gamete A 20 20 B 20 40 C 40 20 D 40 40
  6. 7. <ul><li>QUESTION 6: </li></ul><ul><li>Meiosis causes variation in an organism because……………………. </li></ul><ul><li>Crossing over takes place between chromatids </li></ul><ul><li>The number of chromosomes in the nucleus is halved </li></ul><ul><li>Replication process occurs in the first cell division </li></ul><ul><li>Replication process occurs in the second cell division </li></ul>
  7. 8. <ul><li>QUESTION 7: </li></ul><ul><li>Cromosomes in the liver cells of a female human being are </li></ul><ul><li>22 + X </li></ul><ul><li>22 + Y </li></ul><ul><li>44 + XX </li></ul><ul><li>44 + XY </li></ul>
  8. 9. <ul><li>QUESTION 8: </li></ul><ul><li>What is the percentage of a husband and wife having a male child and a female child at each birth </li></ul>Male child Female child A 25% 25% B 25% 75% C 50% 50% D 75% 25%
  9. 10. <ul><li>QUESTION 9 : Which of the following shows the chromosome make-up in a zygote which will develop into a male baby? </li></ul><ul><li>22 + X </li></ul><ul><li>22 + Y </li></ul><ul><li>44 + XX </li></ul><ul><li>44 + XY </li></ul>
  10. 11. <ul><li>QUESTION 10 : Which of the following statements is true about non-identical twins? </li></ul><ul><li>Two ova are fertilized by two sperms </li></ul><ul><li>The sex of both foetuses is always the same </li></ul><ul><li>Both foetuses share a placenta </li></ul><ul><li>A fertilized ovum divides into two </li></ul>
  11. 12. <ul><li>QUESTION11 : Albinism is caused by… </li></ul><ul><li>Mutation to the gene which controls the skin colour </li></ul><ul><li>Mutation to the gene which produces haemoglobin </li></ul><ul><li>The 45 chromosomes contained in the somatic cell </li></ul><ul><li>The defect in the structure of chromosome </li></ul>
  12. 13. <ul><li>QUESTION 12 : A skin cell of a baby contains 47 chromosomes. Which of the following genetic diseases is the baby suffering from? </li></ul><ul><li>Haemophilia </li></ul><ul><li>Albinism </li></ul><ul><li>Down’s syndrome </li></ul><ul><li>Turner’s syndrome </li></ul>
  13. 14. <ul><li>Question 14 : A cell division process produces four daughter cells from a parent cell. In which of the following parts of the body does this process occur? </li></ul><ul><li>Skin </li></ul><ul><li>Liver </li></ul><ul><li>Alimentary control </li></ul><ul><li>Testis </li></ul>
  14. 15. <ul><li>Question 13 : A change which occurs spontaneously to the structure of gene or chromosome in the nucleus of an organism is known as </li></ul><ul><li>Mitosis </li></ul><ul><li>Mutation </li></ul><ul><li>Variation </li></ul><ul><li>Meiosis </li></ul>
  15. 16. <ul><li>Question 15 : Which of the following statements is/are true about mitosis? </li></ul><ul><li>It only occurs in somatic cells </li></ul><ul><li>Replication occurs once only </li></ul><ul><li>One parent cell produces four daughter cells </li></ul><ul><li>III only </li></ul><ul><li>I and II only </li></ul><ul><li>II and III only </li></ul><ul><li>I, II and III </li></ul>

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