Farming, Measurong Pollution

Question 1

What do fertilisers do?

Answer 1

Increase plant yield- can wash out of soils and pollute rivers

Question 2

Pesticides

Answer 2

Increases plant yield by stopping pests from eating or competing with crop plants - can distort non pest species and lead to bioaccumulation

Question 3

Disease control?

Answer 3

Prevents losses of plants and animals - antibiotics can still be found in meat

Question 4

Battery metods?

Answer 4

Less room to move-
Less wasted energy-
Less food needed-
Reduced costs

Poor QOL for animals

Question 5

For and against culling badgers?

Answer 5

For: Badgers pass on bTB to cattle
Many cattle die each year

Against: not always effective.
Surviving badgers can move to other areas spreading the disease
Vaccination may be more effective

Question 6

How can pollution in rivers and streams be measured?

Answer 6

Changes in pH
Changes in oxygen levels
Indicator species

Question 7

What are Lichens sensitive to?

Answer 7

SO2

Question 8

Zones of pollution??

Answer 8

From 0-6

0 = heavy pollution/ high SO2 levels

6= clean air/ low SO2 levels

Question 9

What do fungicides do?

Answer 9

Kill fungi that cause plant disease

Question 10

What do herbicides do?

Answer 10

Reduce competition for water and light between pest plants and crops

Question 11

What is in fertilisers?

Answer 11

Nitrates and phosphates

Question 12

What if the form of DNA?

Answer 12

• Coiled double helix
• Phosphates and sugar form the backbone
• C and G always bond- as they have 3 bonds
• A and T always bond as they have 2 bonds

Question 13

What is a chromosome?

Answer 13

• Long strands of DNA
• Come as identical homologous pairs(except sex chromosomes)
• 23 pairs (46 all together)

Question 14

What is an allele?

Answer 14

Difference types of genes

Question 15

Four bases of DNA?

Answer 15

A = Adenine 
C= Cytosine
G = Guanine 
T = Thymine