Unit 3 Photosynthesis SAC?

[Yacoubb]

lol

My same reaction Stick!!

[Snorlax]

Question:
Why are chlorophyll found in the Thylakoid membrane?

[DylanBurrowes]

They fit in there nicely for a start, as the hydrophobic tail of the chlorophyll a molecule fits nicely into the phospholipid bilayer of the thylakoid membrane.

[Yacoubb]

However, the chlorophyll is enclosed in the grana thylakoids, and I'd say that by having a more enclosed space that holds the chlorophyll-pigment, i.e. the chlorophyll isn't free-floating in the chloroplast, you actually will have a more efficient photosynthetic rate; or at least the light-dependent stage would be more efficient, as the process of capturing radiant energy is made more efficient. Can someone check if there is anything wrong with the above? ^

[Smiley_]

have people done theirs yet?

[Stick]

Nah, mine got postponed until next term because the experiment my teachers and lab staff were trialling failed. We're reverting to a much simpler prac now, but there's no point trying to rush it in the last few remnants of term 1.

[Yacoubb]

I have mine on the 29 April, because I havent even had the enzymes SAC.

[peterpan101]

Why does increasing bubble rate suggest an increasing rate of photosynthesis?

[AbominableMowman]

Why does increasing bubble rate suggest an increasing rate of photosynthesis?

If there is an increasing rate of photosynthesis then there will be an increasing rate of release of oxygen by the plant, which causes the bubbles to form.

[Smiley_]

If there is an increasing rate of photosynthesis then there will be an increasing rate of release of oxygen by the plant, which causes the bubbles to form.

edit:whoops dont worry

[Conic]

would be from respiration. Photosynthesis releases .

[AbominableMowman]

edit:whoops dont worry

I was gonna write CO₂ as well then I realised it was oxygen LOL.

[Smiley_]

I was gonna write CO₂ as well then I realised it was oxygen LOL.

i know you automatically think co2 bubbles !

[Snorlax]

Has anyone seen Question 3, d) (short answer), on the 2009 mid year exam?
Could someone explain the question as i'm so lost on how the answer comes to that conclusion.
http://www.vcaa.vic.edu.au/Documents/exams/biology/2009biol1-w.pdf
http://www.vcaa.vic.edu.au/Documents/exams/biology/biology_assessrep_june09.pdf

In addition, Question 17 of the MC, on the 2010 mid year exam.
How are we suppose to know that?!
http://www.vcaa.vic.edu.au/Documents/exams/biology/2010biol1-w.pdf
http://www.vcaa.vic.edu.au/Documents/exams/biology/biology1_assessrep_10.pdf

[psyxwar]

Has anyone seen Question 3, d) (short answer), on the 2009 mid year exam?
Could someone explain the question as i'm so lost on how the answer comes to that conclusion.
http://www.vcaa.vic.edu.au/Documents/exams/biology/2009biol1-w.pdf
http://www.vcaa.vic.edu.au/Documents/exams/biology/biology_assessrep_june09.pdf

In addition, Question 17 of the MC, on the 2010 mid year exam.
How are we suppose to know that?!
http://www.vcaa.vic.edu.au/Documents/exams/biology/2010biol1-w.pdf
http://www.vcaa.vic.edu.au/Documents/exams/biology/biology1_assessrep_10.pdf

For the first one: as we can see from the loss of pigment in the leaves over the autumn months, the leaves are changing in colour. Only trees that lose their leaves in winter exhibit a color change (to a orangish brownish color) in Autumn - the alternative are evergreen trees which are green all year long. Therefore, we can conclude that the leaves of the tree in question belong to a tree that loses its leaves in winter.