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Thread: HSC 2017 Predictions/Preparation Thread [Biology]

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    HSC 2017 Predictions/Preparation Thread [Biology]

    Post predictions for the biology exam or discuss thoughts relating to the upcoming exam.

    I reckon we'll get the 8 marker which AGAIN combines 2 modules together e.g last time it was maintaining a balance and blueprint of life. I think it could be on scientists or technologies (e.g. reproductive)
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    re: HSC 2017 Predictions/Preparation Thread [Biology]

    Communications 7 marker on cataracts
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    re: HSC 2017 Predictions/Preparation Thread [Biology]

    For sure a Beadle and Tatum 4/6/8 marker this year. Difficult and hasnt been done in a while.
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    re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Zamura1 View Post
    For sure a Beadle and Tatum 4/6/8 marker this year. Difficult and hasnt been done in a while.
    Praying this comes up because we had an 8 marker on beadle and tatum + transgenics in our third trial!
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    re: HSC 2017 Predictions/Preparation Thread [Biology]

    QX. Both plants and animals have unique structures which facilitate the transport of materials, for example, glucose and water:
    a) Identify 1 type of blood vessel and describe its structure (2)
    b) Describe the process of water transportation in plants and identify the structure involved (4)
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Microsoft Word View Post
    QX. Both plants and animals have unique structures which facilitate the transport of materials, for example, glucose and water:
    a) Identify 1 type of blood vessel and describe its structure (2)
    b) Describe the process of water transportation in plants and identify the structure involved (4)
    a) Arteries consist of 3 layers including thick muscle, connective tissue, and elastic fibres. Then I'd probably include a labelled diagram.

    I'll let someone else answer b) but in short it's the transpiration theory through the evaporation-tension-cohesion mechanism, involving xylem.

    Hopefully we get these

    By the way feel free to post questions here to assist everyone with preparation.
    Last edited by pikachu975; 29 Sep 2017 at 7:15 PM.
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Microsoft Word View Post
    QX. Both plants and animals have unique structures which facilitate the transport of materials, for example, glucose and water:
    a) Identify 1 type of blood vessel and describe its structure (2)
    b) Describe the process of water transportation in plants and identify the structure involved (4)
    I think it has already been asked or maybe I did it in some trial paper. This questions looks very familiar.
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Green Yoda View Post
    I think it has already been asked or maybe I did it in some trial paper. This questions looks very familiar.
    yeah thats already been an hsc q like twice lmao free marks if it shows up
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by pikachu975 View Post
    Praying this comes up because we had an 8 marker on beadle and tatum + transgenics in our third trial!
    what q was that btw? i'm kinda bad at beadle/tatum thats why
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    QX. Describe the timeline of human understanding in the cause and prevention of malaria. In your answer include at least 2 scientific figures who have contributed to this understanding.
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Mathew587 View Post
    what q was that btw? i'm kinda bad at beadle/tatum thats why
    It was something where you had to analyse the work of Beadle and Tatum, their conclusions, and how their work related to genes and phenotypic expression as well as the use of a transgenic species as an example while applying Beadle and Tatum's work with phenotypes/genes to the example.
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Microsoft Word View Post
    QX. Both plants and animals have unique structures which facilitate the transport of materials, for example, glucose and water:
    a) Identify 1 type of blood vessel and describe its structure (2)
    b) Describe the process of water transportation in plants and identify the structure involved (4)
    b) In plants, water is passively transported from the roots to the leaves via the XYLEM by an evaporation-cohesion-adhesion mechanism (transpiration stream theory):
    - EVAPORATION of water from the leaf cells through the stomates initiates the pull of a ‘transpiration stream’. Water is then drawn up the xylem vessels to replace this loss.
    - The water molecules tend to bind together due to the COHESIVE properties of hydrogen and oxygen, thus forming a continuous column in the xylem. The water molecules also stick to the walls of the xylem vessel due to the ADHESIVE properties of hydrogen and oxygen. This combination of adhesive and cohesive forces, together with the suction pull of the transpiration, creates the transpiration stream which transports water upwards from the roots to the leaves.

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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by LADislav View Post
    b) In plants, water is passively transported from the roots to the leaves via the XYLEM by an evaporation-cohesion-adhesion mechanism (transpiration stream theory):
    - EVAPORATION of water from the leaf cells through the stomates initiates the pull of a ‘transpiration stream’. Water is then drawn up the xylem vessels to replace this loss.
    - The water molecules tend to bind together due to the COHESIVE properties of hydrogen and oxygen, thus forming a continuous column in the xylem. The water molecules also stick to the walls of the xylem vessel due to the ADHESIVE properties of hydrogen and oxygen. This combination of adhesive and cohesive forces, together with the suction pull of the transpiration, creates the transpiration stream which transports water upwards from the roots to the leaves.
    Nice answer but I'd recommend including tension in the xylem column from evaporation
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Do you guys think they will ask much about the brain in the communication topic?
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Snowflek View Post
    Do you guys think they will ask much about the brain in the communication topic?
    personally got a strong feeling that the option will emphasise brains
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Mathew587 View Post
    personally got a strong feeling that the option will emphasise brains
    why is that?

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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by same1111 View Post
    why is that?
    feels man
    well ive gotta 1/4ish chance of getting it right tho
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Snowflek View Post
    Do you guys think they will ask much about the brain in the communication topic?
    I think its about time they asked more about the brain.
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by BLIT2014 View Post
    I think its about time they asked more about the brain.
    Hopefully a labelled diagram we have to draw
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by pikachu975 View Post
    Hopefully a labelled diagram we have to draw
    That's already been answer way too many times. I was hoping more on explaining the function and structure.
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by Green Yoda View Post
    That's already been answer way too many times. I was hoping more on explaining the function and structure.
    Ah yes explaining the function of each part would be great too

    Not sure how we would comment on structure!!
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by pikachu975 View Post
    Ah yes explaining the function of each part would be great too

    Not sure how we would comment on structure!!
    tbh i'd have thought more of the actual nerves and its components
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Bit of a dumb question but speaking of nerves, do they only contain bundles of axons or do they have dendrites as well?

    I've legit seen various sources say different things so I'm so confused lol. Wikipedia and some textbooks for example only states axon but then my bio teacher said it contains dendrites as well.
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by captainhelium View Post
    Bit of a dumb question but speaking of nerves, do they only contain bundles of axons or do they have dendrites as well?

    I've legit seen various sources say different things so I'm so confused lol. Wikipedia and some textbooks for example only states axon but then my bio teacher said it contains dendrites as well.
    Could your biology teacher been talking about a neuron?

    See: https://www.boardofstudies.nsw.edu.a...am-biology.pdf 32A (Communications)

    and the sample answer given https://www.boardofstudies.nsw.edu.a...answers-11.pdf
    Last edited by BLIT2014; 2 Oct 2017 at 6:57 PM.
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    Re: HSC 2017 Predictions/Preparation Thread [Biology]

    Quote Originally Posted by captainhelium View Post
    Bit of a dumb question but speaking of nerves, do they only contain bundles of axons or do they have dendrites as well?

    I've legit seen various sources say different things so I'm so confused lol. Wikipedia and some textbooks for example only states axon but then my bio teacher said it contains dendrites as well.
    I know them to be a bundle of fibres so i suppose they could have both.

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