package deal of AQA.

What is homeostasis? - correct answer The maintenance of a constant internal environment. What is a stimulus? - correct answer A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? - correct answer Det...

large molecules often contain carbon. why? - correct answer they can readily form bonds with other carbon atoms. this forms a 'backbone'. other atoms can then attach. describe benedicts test for reducing sugars - correct answer add equal volumes of the sugar sample and benedicts reagent. heat ...

What are eukaryotic cells? - correct answer Cells that are more complex and have a nucleus (animal and plant cells) What are prokaryotic cells? - correct answer Cells that are smaller and simpler, and don't have a nucleus but still have genetic information (bacteria) What are eukaryotes? - co...

Why does product evolution occur? - correct answer > Continuous improvement > Market pull > Technology push > Social/cultural needs > Political/environmental needs What is market pull? - correct answer > Designing to satisfy the needs and wants of customers - costumer deman...

Vaccine - correct answer a small dosage of dead or inactive pathogens injected into the body the job of vaccinations - correct answer to produce the correct antibodies for a specific disease so that next time the specific pathogen enters the body your whole blood cells already know how to defeat ...

What are the two types of microscopes? - correct answer Light Microscope Electron Microscope What is the magnifying power of a light microscope? - correct answer x 2,000 What is the magnifying power of an electron microscope? - correct answer x 2,000,000 What is the resolving power? - corr...

Ecosystem - correct answer The interaction of a community of living organisms with the non-living parts of their environment What is a community made up of? - correct answer The populations of different species or organisms that are all interdependent in a habitat Habitat - correct answer The ...

What is homeostasis? - correct answer The maintenance of a constant internal environment. What is a stimulus? - correct answer A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? - correct answer Det...

large molecules often contain carbon. why? - correct answer they can readily form bonds with other carbon atoms. this forms a 'backbone'. other atoms can then attach. describe benedicts test for reducing sugars - correct answer add equal volumes of the sugar sample and benedicts reagent. heat ...

What is the charge of a proton? - correct answer +1 What is the charge of a neutron? - correct answer 0 What is the charge of an electron? - correct answer -1 What is the relative mass of a proton? - correct answer 1 What is the relative mass of a neutron? - correct answer 1 What is t...

Energy Stores - correct answer 1) Elastic potential 2) Gravitational potential 3) Thermal 4) Electrostatic 5) Nuclear 6) Chemical 7) Kinetic 8) Magnetic 9) Light 10) Sound How is energy transferred? - correct answer 1) Mechanically - force doing work 2) Electrically - work done by mo...

describe and explain the steps in the light dependent reaction of photosynthesis - correct answer 1. photoionisation: light reaches chlorophyll in PSII, which is absorbed by an electron, which becomes excited and moves to a higher energy level. 2. the electron passes to a carrier protein in the thy...

What are the structures of an animal cell?correct answer Nucleus, cytoplasm, cell membrane, mitochondria and ribosomes. What are the structures of a plant cell?correct answer All structures from animal cells and cell wall, permanent vacuole and chloroplasts. What does the nucleus do?correct an...

Natural Hazard -correct answer A natural hazard is a natural process which could cause death, injury or disruption to humans, or destroy proprty or posesions. Natural disaster -correct answer A natural hzard that has actualy happened Geological hazards -correct answer Caused by kand and tec...