Download b2 6 mark question challenge

REVISION FOR B2 EXAM
There are 14 questions stuck up around the room.
Working in pairs find them and answer with
appropriate levels of detail.
(At least 6 points per question!)
Bring your written answer to my desk for marking and
target setting.
Targets must be met and approved before you can
move on to the next question.
CHALLENGE – who will find and answer the most
questions???
1.
Stem cells can be taken from spare embryos from
IVF, created from adult cells or extracted from the
umbilical cord blood of new born babies.
Evaluate the usefulness of each type of stem cell
and discuss the ethical implications of their use.
2.
New species can arise from existing species.
This is called speciation.
Explain how speciation can occur.
3.
Compare and contrast mitosis and meiosis.
Include number of divisions, location, purpose
and results.
4.
What is photosynthesis?
Describe and explain 3 limiting factors and their
effect on rate of photosynthesis.
5.
Compare and contrast the two types of
respiration in mammals – include word equations,
efficiency and effects on the body.
6.
What are enzymes?
Explain how they work and what can affect
their action.
7.
How could you measure the number of dandelions
on the school field?
How could you measure the distribution of
dandelions from the edge of the field to the centre?
Hint: these are two different methods.
8.
What are isomerase,
protease and lipase?
How are they used in
the food and chemical
industry?
9.
Define extinction and explain how a species can
become extinct.
10.
•Name a genetic disorder which is controlled by a
dominant allele and one by a recessive allele.
•Use a punnet square to predict whether future offspring
will inherit a recessive disorder whether both parents are
carriers.
•Draw another punnet square to predict whether future
offspring will inherit a dominant genetic disorder where
the father is heterozygous for the condition and the
mother homozygous with the ‘normal’ allele.
11.
Plant growers can give their plants the best
conditions for growth by controlling the
environment.
How could gardeners adapt a greenhouse to grow
the biggest crop of tomatoes?
Justify your choices with science.
12.
Compare and contrast animal, plant, bacteria and
yeast cells.
Include information about genetic material,
organelles, and structure.
13.
What is diffusion?
How can the rate of diffusion be altered?
Give (and explain) examples of how diffusion is
utilised in plant and animal cells?
14.
Describe and explain the effect of exercise on the
human body.