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.