B2 Aqa Revision

Only available on StudyMode
  • Download(s) : 138
  • Published : May 1, 2013
Open Document
Text Preview
GCSE ADDITIONAL BIOLOGY (B2) REVISION BOOKLET
Name ________________________
These are summary questions for all topics in the GCSE Biology B2 exam. When you have completed the booklet collect a mark scheme and mark your work. Check off each section and enter your score. If you find a section(s) produce low scores you can: Come to catch up and ask your teacher for help Go online: o http://www.bbc.co.uk/schools/bitesize/ o http://www.s-cool.co.uk/ o http://web.aqa.org.uk/qual/newgcses/science/new/bio_ materials.php?id=03&prev=03 Use your notes and revision guides You can purchase revision guides from Mrs Fuller in the main science prep room. All the above will identify areas of weakness and give you strategies to swat up on.

Score Date
B2.1 Cells B2.2 How plants produce food B2.3 Energy Flows B2.4 Enzymes B2.5 Homeostasis B2.6 Inheritance End of unit exam

Grade %

Grade

/11 /14 /15 /28 /15 /15 /25

90+ 80 70 60 50 40 30 20

A* A B C D E F G

S Williams Nov ‘10

B2.1 Cells Summary sheet
Name: Date:

Summary questions
1 Look at this table showing how long different cells live for: Type of cell Liver cell Muscle cell Red blood cell Skin cell Life in days 250 240 100 18

a) What does this data tell you about how these cells are produced? .................................................................................................................................................. .................................................................................................................................................. Now read the following information: All nerve cells develop when a person is very young. Most people in Britain live in excess of 70 years. Older people have increasing problem with memory. Memory involves nerve cells in our brain. Nerve cells are never replaced. b) Explain what this information tells you about how long nerve cells live. .................................................................................................................................................. .................................................................................................................................................. .................................................................................................................................................. ..................................................................................................................................................

AQA Science © Nelson Thornes Ltd 2006

B2 1

1

B2 1 Summary sheet
Continued … 2 Read the following article: In Japan, each child is presented with its own umbilical cord in a decorated box to remind it of the bond with its mother. At the end of the 20th century there was a nuclear accident in Japan. The two workers who were most affected had their bone marrow destroyed. One received a bone marrow transplant from his sister. His blood-cell levels improved quite fast. The other had no relatives with a tissue match. Blood stem cells were taken from his preserved umbilical cord and used to give him a chance of life. a) What is a stem cell? .................................................................................................................................................. .................................................................................................................................................. b) What type of stem cells are named in this article? ……………………………………………………, ......................................................................... c) There is one other type of stem cell – what is it? .................................................................................................................................................. d) What are the possible benefits of using stem cells in medicine?...
tracking img