GCSE COMBINED SCIENCE HIGHER: BIOLOGY 2018 PAPER 2

Notes:

Question 1)

Factor       /         Biotic        /       Abiotic

Diseases       ✓

Herbivores   ✓

Temperature                          ✓

Water                                     ✓

1.2  Low light intensity under the tree.

less photosynthesis  under the tree

which produces more glucose and proteins

1.3   quadrat 

light meter

1.4      1.5m to the power of 2

1.5   to keep the light intensity as similar as possible

1.6    repeat investigation around the tree

1.7   daisy

1.8   as light intensity increased so did the percentage of plants.

1.9    Factor -   lack of water

reason -  because the leaves are stopping the rain.

Question 2 )

Do not prescribe fluoroquinolone. Because they will get better due  to the body's normal immune system

Do not prescribe to antibiotics for viral infections, because antibiotics do not kill viruses.

If you do prescribe fluoroquinolone make sure the patient finishes the course. because any bacteria left may develop resistance, survive and reproduce rapidly.

Only prescribe fluoroquinolone if the patient has a new strain. Because routine use would lead to an increase in restraint bacteria.

Doctors and nurses in the hospital should be using antibacterial hand wash between  each patient or disinfectant to clean wards, to kill bacteria.

 

Question 3 )

3.1  They survive in high temperatures.

They survive where it is acidic

3.2    C

3.3  because it has activity at high temperature 

3.4   Archea - primitive bacteria

Prokayota  -  modern bacteria

Eukaryota -  includes plants and animals

3.5  these microorganisms live in extreme conditions.

Question 4 )

4.1   p ( synapse)
Q ( relay neurone)

4.2   the neurone - electrical impulse

synapse - movement of chemical transmitters

4.3  the impulse has to travel to the brain and back.

4.4    120   = 1.6 / time

answer: 13

4.5   As age increases the time for the muscle to contract increase at an increasing rate.

Question 5 )

Question 6 )

Question 7)

my answers: