Daily Practice · GCSE Science
January 1965 5-a-day
Every sheet in January 1965
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 1965In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 2nd January 1965State the type of large biological molecule that all enzymes are made from.
- 3rd January 1965Why can HIV not be treated with antibiotics?
- 4th January 1965State one difference between nervous and hormonal coordination.
- 5th January 1965State what is meant by a selection pressure.
- 6th January 1965A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.
- 7th January 1965State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 8th January 1965Define the limiting reactant.
- 9th January 1965Using the values in the previous question, calculate the overall energy change for the reaction.
- 10th January 1965State Le Chatelier's principle in your own words.
- 11th January 1965Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 12th January 1965Why should you write down the equation even if you cannot finish the calculation?
- 13th January 1965A resistor of resistance 15 ohm is connected to a 6.0 V supply. Calculate the current flowing through it. Use V = I x R.
- 14th January 1965What causes the pressure of a gas on the walls of its container?
- 15th January 1965On a velocity-time graph, what does the area between the line and the time axis represent?
- 16th January 1965State the speed of all electromagnetic waves travelling through a vacuum.
- 17th January 1965State the name of the force that keeps a satellite in orbit around the Earth.
- 18th January 1965Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 19th January 1965Why are xylem cells strengthened with lignin?
- 20th January 1965Why is glucose converted into starch for storage?
- 21st January 1965A plant grown in the shade is shorter than a genetically identical plant of the same species grown in full sunlight. State whether this difference is genetic variation, environmental variation, or both.
- 22nd January 1965State one way in which high biodiversity benefits an ecosystem.
- 23rd January 1965Explain how painting an iron gate helps prevent it from rusting.
- 24th January 1965Why can an ionic solid not conduct electricity?
- 25th January 1965Name the salt made from zinc oxide and nitric acid.
- 26th January 1965State what is meant by a catalyst.
- 27th January 1965Name the small molecule typically released as a by-product during condensation polymerisation.
- 28th January 1965State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.
- 29th January 1965Define specific heat capacity.
- 30th January 1965Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.
- 31st January 1965State the number of protons and the number of neutrons in an alpha particle.