Term 2, Week 3
Biology
2021 HSC biology
Chemistry
2021 HSC chemistry
Physics
2021 HSC Physics
Science extension
Question 5 (15 marks)
Penicillin was discovered in London in September of 1928. Doctor Alexander Fleming was a bacteriologist who worked at St Mary’s Hospital, London. It is reported that after he returned from a summer vacation in Scotland he found a messy lab bench and a good deal more. Upon examining some colonies of Staphylococcus aureus, Fleming noted that a mould called Penicillium notatum had contaminated his Petri dishes. After carefully placing the dishes under his microscope, he was amazed to find that the mould prevented the normal growth of the staphylococci. It took Fleming a few more weeks to grow enough of the mould so that he was able to confirm his findings. His conclusions turned out to be phenomenal: there was some factor in the Penicillium mould that not only inhibited the growth of the bacteria but, more important, might be harnessed to combat infectious diseases. Reproduced with the permission of Dr Howard Markel. (https://www.pbs.org/newshour/health/the-real-story-behind-the-worlds-first-antibiotic)
To what extent do discoveries in science occur as a result of planned experiments? In your answer include a reference to the stimulus provided and your Scientific Research Project.
Mathematics advanced
2021 HSC Math advanced
Mathematics extension
2021 HSC Math Ext
Term 2, Week 2
Chemistry
From the 2015 HSC Chemistry paper
Physics
From the HSC 2015 Physics paper
Science Extension
How can we plan new experiments to make discoveries about things we don’t know? [3 marks]
Mathematics Advanced
2015 HSC Mathematics Advanced
Mathematics Extension 1
2015 HSC Mathematics extension, hopefully this one isn’t that bad!
Weekly Homework: Term 2, Week 1
Biology
This is based off a 2019 HSC biology 4 mark question helping you improve your short answer question skills.
Explain the loss of biodiversity that may result from a plant undergoing asexual reproduction as opposed to sexual reproduction. [4 marks]
Chemistry
From the 2016 HSC Chemistry paper
Physics
From the HSC 2016 Physics paper
Science Extension
Have a think about your project. How is you research influenced by social, political and cultural issues. Explain how you can address these issues without them swaying the validity of your investigation. [4 marks]
Mathematics Advanced
2020 HSC Mathematics Advanced, to get you thinking about integration
Mathematics Extension 1
2020 HSC Mathematics extension, hopefully this one isn’t that bad!
by Joshua Mills | Free
Learn science through online games. Pep-man teaches you how peptide synthesis works. A cutting-edge technique to make next-gen cancer drugs.
Subscribe to access the rest of the answers and more Edzion premium content
Those who do best in the HSC work hard – we can’t do that for you. But we can give you access to the resources you need so you can get the results you want.
Would you be against making your grades better, starting today?
Subscribe now and get unlimited access to our premium content – unlock the remaining answers to the above questions and get answers to other edzion articles – all for just $29.99 per month, cancel anytime.
Read more of this content when you subscribe today.