cycles
Where does the phosporous cyle NOT take place?
In the atmosphere
What two nutrients are in fertilizer?
Nitrogen and phosphorous
Who invented the first vaccine? Who invented the first antibiotic?
Edward Jenner
Alexander Fleming
What does the nucleus do? What is stored in the nucleus?
It is the control center of the cell. It contains DNA
H2 + N2 → NH3
3H2 + N2 → 2NH3
How do animals get nitrogen and phosphorous into their bodies?
Through eating
What are some human activities that are causing eutrophication?
Using fertilizer and dumping sewage into the water.
What are the 4 pathogens that make us sick?
Bacteria, virus, parasites, fungi
What two organnelles are found in plant cells BUT not animal cells?
chlorplasts and cell wall
What is acid rain?
Rain the has a pH lower than 7
what is nitrogen fixation and what can do nitrogen fixation
when nitrogen from the air is turned into ammonia or nitrate. bacteria and lightning can do this
what is the first thing that happens when there is extra phophorous and nitrogen in the water?
plant growth flourishes
what does the mitochondria do?
It turns food into energy?
What causes acid rain?
Burning fossil fuels which releas sulfur and nitrogen oxide
What is denitrification? What can do it?
When nitrogen is returned back to the atmosphere. It is done by a special type of bacteria
Why are algal blooms so bad?
Algae blooms block sunlight so plants under the water can not do photosynthesis.
what is an anitgen and antibodies
Antigens are on the surface of the pathogen and are unique to each pathogen
antibodies are made by the body and fit onto the antigen and destroy the pathogen
What does the vacuole do? Which has a larger vacuole?
It stores food water and waste. It is larger in plant cells
What is a cell according to cell theory?
1. all organisms are made of cells
2. smallest unit of life
3. cells make other cells
Why is the phosphorous cycle more sensitive then other cycles?
Because it does not take place in the atmosphere and takes a long time so if something goes wrong it is harder to fix.
What are the two ways that decreases the oxygen in the water during eutrophication?
1. plants die from no sunlight so do not produce more oxygen
2.when dead plants are decomposed the bacteria uses up the last of the oxygen.
What are the diffrences between lymphocytes and phagocytes
Lymphocytes - fight and remember pathogens by using antibodies
Phagocytes - fight and destroy pathogens
What is in animal cells but not plant cells?
Lysosomes
AgNO3 + K3PO4 → Ag3PO4 + KNO3
3AgNO3 + K3PO4 → Ag3PO4 + 3KNO3