Explain how tissue fluid is formed in capillary beds and how it assists the exchange of
chemicals by diffusion between capillaries and tissues.
Why is the left side of the
heart thicker?
5 a day revisionB7 – Blood, circulation and tissue fluid
@aegilopoides
List the
components of
blood and state the
role of each
component.
What is meant by a
double circulatory
system?
Explain the role of
valves in the heart
for controlling
blood flow.
What is the
function of the
skeleton?
Describe the structure of a joint in the body and explain the function of each
component part.
How do
muscles make
bones move?
What is meant by antagonistic muscle pairs?
Explain the difference
between a tendon and
a ligament.
5 a day revisionB7 – Skeletal system
@aegilopoides
What is the optimum
temperature for the
human body and why
does it need to be kept
constant?
Explain the role of insulin in controlling blood sugar and
explain what happens in patients suffering from diabetes.
Describe the
response of the
body when you
are too hot.
What is the difference between Type I and Type II diabetes? How are they treated?
Describe the
response of the
body when you
are too cold.
5 a day revisionB7 – Control of body temperature and blood sugar
@aegilopoides
What is the difference
between accuracy
and repeatability?
What information would a fitness
practitioner need before designing an
exercise regime?
Suggest reasons why BMI may not be an accurate way of evaluating whether a person is
overweight or underweight.
Look at theinformation table – should any of these
individuals be concerned?
5 a day revisionB7 – Exercise and fitness
@aegilopoides
Mark measures his recovery period following a standard exercise routine once per week for 8 weeks.
The results are shown in the table. Mark concludes that his fitness has improved. Why do these data
reduce confidence in the validity of this conclusion?
Calculate the BMI of each person in
the table.
Look at the information, should any of them be concerned?
State 4 common
injuries associated
with excessive
exercise.
Describe the role of a physiotherapist in the
treatment of a skeletal-muscular injury.
What are the
main symptoms
of a sprain?
Why is it important to comply with the treatment your physiotherapist gives you?
What is the
RICE method
for treating
sprains?
5 a day revisionB7 – Exercise and injury
@aegilopoides
What is an
ecosystem?
Explain why some ecosystems are described as stable. Use the rainforest as an example to
illustrate your answer.
Why are natural
ecosystems examples of a
closed-loop system. Give
reasons for your answer.
How is vegetation beneficial to an ecosystem?
What is a
perfect closed-
loop system?
5 a day revisionB7 – Ecosystems
@aegilopoides
Give 2 impacts
of soil erosion.
Use of fertilisers in agriculture can lead to eutrophication of surrounding water
ways. Describe and explain how the process of eutrophication happens.
Give 3 examples of
human activities that
can damage
ecosystems.
Explain what is meant by bioaccumulation.
Explain why the use of
crude oil does not
fulfil the requirements
of a closed loop
system.
5 a day revisionB7 – Human impacts on ecosystems
@aegilopoides
What ecosystem
services do
humans rely on?
Describe how natural resources including fishing and timber can
be made sustainable.
Define
sustainability.
Why is the sun’s energy sustainable?
Tensions sometimes exist
between conserving a
natural ecosystem and
the needs of local people.
Suggest why.
5 a day revisionB7 – Managing ecosystems
@aegilopoides
State 5 reasons that
make bacteria ideal
for use in industrial
and genetic processes.
One example of genetic modification is the production of golden rice. Golden rice has a gene inserted that produces vitamin A. White rice does
not contain vitamin A. Countries with people who eat mainly white rice have high levels of blindness due to
a lack of vitamin A. Suggest why people in these countries may be more
in favour of the genetic modification of organisms than people who live in the UK.
Define genetic
modification.
Outline the steps in the process of genetic
modification and give 2 applications.
5 a day revisionB7 – Microorganisms and genetic modification
@aegilopoides
Wheat can be genetically modified to be resistant to weed killer. This helps farmers to keep their crop free of weeds, maximise the yield and earn more profit. However, some people are opposed to this idea. They think it is morally wrong to alter the DNA of living things (“playing God”).
Describe 2 other arguments against the genetic modification of wheat to be resistant to weed killer.
1. Why might heart
valves need to be
replaced?
Describe one current and one potential use of stem cell technology.
Explain how
nanotechnology
can be used in
food packaging.
5 a day revisionB7 – New technologies
@aegilopoides
What is a genetic
probe? Why can it
only bind to a
particular area of
DNA?
What are the
advantages of using
an artificial heart
valve over a
biological valve?
Outline the stages in the use of DNA technology in genetic testing.
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