The equation MgCO3 → MgO + CO2 (Mr=84). Which mass of MgO is formed when 21.0g of MgCO3 are completely decomposed?
The diagram shows arrangement of particles changing from closely packed to spaced out. Which change of state is shown?
X-rays are produced when cathode rays strike on:
In an experiment a student observes that removing algae from a pond decreases the fish population. This shows that:
Evolution is supported by the presence of homologous structures because:
Intensive exercise increases heart rate to supply more oxygen towards the body's muscles. This response shows the coordination between:
Algae are placed in a group of plant-like Protists because:
If an insecticide is sprayed in a grassland ecosystem the trophic level directly affected is:
In a forest one species of bird diverges into different food sources. Such evolution is inferred as:
The process that takes place on the inner membrane of mitochondria is:
A Scientist observes a cell with proper ATP production and respiratory activity but unassembled proteins. The organelle most likely dysfunctional is:
The non-protein part of a conjugate enzyme if loosely attached is called:
Ahsan felt pain in his throat and was prescribed antibiotics. He feels better after a day. The infection can be caused by:
Sara's mother kept fruits in a storage room and observed a certain fungus growth on decaying fruit. The fungus would be classified as:
If the checkpoints regulating cell division are altered the person will most likely get: