First Unit 3 SAC?

[Irving4Prez]

Ours has something to do with placing plant cells into varying hypotonic solutions and observing the net movement of water

[Snorlax]

First SAC completed~
POTATTTOOO CUBBBBBESSSSSSSSSSSS

[Stick]

First SAC is on Monday and Tuesday, focussing on osmosis and the transport of substances across a cell membrane. We have to write a hypothesis and obtain numerical results which we will graph, and then we have a test/write up where we are asked to analyse and interpret our results in different and meaningful ways.

[Smiley_]

Ours is a test and data analyses

[Yacoubb]

We have to write up a prac report including aim, hypothesis, materials/apparatus, method, results, discussion (test section) and conclusion.

[Snorlax]

Is that all your SAC is on?
We have a Report we write up (hypothesis+discussion only) + Application question based on Chapter 2 :/

[ealam2]

We have to 'design' some parts of our prac and then write up and some questions I think.

Also, quick question. Any tips and advice on how to write a good hypothesis?

[Yacoubb]

Is that all your SAC is on?
We have a Report we write up (hypothesis+discussion only) + Application question based on Chapter 2 :/

Application based questions on all of Chapter 2 will be assessed in the discussion

[Yacoubb]

We have to 'design' some parts of our prac and then write up and some questions I think.

Also, quick question. Any tips and advice on how to write a good hypothesis?

Hypothesis is probably one of the most confused areas of a prac report that many people confuse with the aim. The hypothesis is you educated guess about the outcome of the experiment. So if the aim of the experiment was to observe the osmotic activity of water molecule in a potato cell when placed in different solutions, your hypothesis would be that the potato cell placed in the hypertonic solution would be plasmolysed and shrivelled, the potato cell in the hypotonic solution would be turgid (normal) and the potato cell in the isotonic solution would be flaccid.

Your hypothesis is also your guess about what is going to happen between the IV and the DV. For example, in the hypothesis above, the DV is the appearance of the potato cell and the IV is the varied solute concentrations.

Hope this helped.

[Smiley_]

Hypothesis is probably one of the most confused areas of a prac report that many people confuse with the aim. The hypothesis is you educated guess about the outcome of the experiment. So if the aim of the experiment was to observe the osmotic activity of water molecule in a potato cell when placed in different solutions, your hypothesis would be that the potato cell placed in the hypertonic solution would be plasmolysed and shrivelled, the potato cell in the hypotonic solution would be turgid (normal) and the potato cell in the isotonic solution would be flaccid.

Your hypothesis is also your guess about what is going to happen between the IV and the DV. For example, in the hypothesis above, the DV is the appearance of the potato cell and the IV is the varied solute concentrations.

Hope this helped.

so it doesn't matter if your wrong?

[Yacoubb]

so it doesn't matter if your wrong?

Your hypothesis is an educated guess - it is usually what is going to happen. I mean, from past memory, you would know that a potato cell is normal turgid when placed in a hypotonic solution because it needs to have turgid guard cells to control the entry/exit of gases and H<sub>2O in the transpiration stream.

So it does sort of matter if you are wrong, because it is expected to be educated + rational. Your teacher would give you a hint of what it really is though</sub>

[ealam2]

Hypothesis is probably one of the most confused areas of a prac report that many people confuse with the aim. The hypothesis is you educated guess about the outcome of the experiment. So if the aim of the experiment was to observe the osmotic activity of water molecule in a potato cell when placed in different solutions, your hypothesis would be that the potato cell placed in the hypertonic solution would be plasmolysed and shrivelled, the potato cell in the hypotonic solution would be turgid (normal) and the potato cell in the isotonic solution would be flaccid.

Your hypothesis is also your guess about what is going to happen between the IV and the DV. For example, in the hypothesis above, the DV is the appearance of the potato cell and the IV is the varied solute concentrations.

Hope this helped.

So is the hypothesis just one statement? And does that mean you have to include a cause and effect? Like IV and DV?
It doesn't include a prediction, right?

Thanks for answering by the way! Appreciate it!

[Stick]

Hypothesis is probably one of the most confused areas of a prac report that many people confuse with the aim. The hypothesis is you educated guess about the outcome of the experiment. So if the aim of the experiment was to observe the osmotic activity of water molecule in a potato cell when placed in different solutions, your hypothesis would be that the potato cell placed in the hypertonic solution would be plasmolysed and shrivelled, the potato cell in the hypotonic solution would be turgid (normal) and the potato cell in the isotonic solution would be flaccid.

Your hypothesis is also your guess about what is going to happen between the IV and the DV. For example, in the hypothesis above, the DV is the appearance of the potato cell and the IV is the varied solute concentrations.

Hope this helped.

Some people also find using the if/then template really helpful. If you're not sure what it is:

If <insert outcome relating to independent variable>, then <insert outcome relating to dependent variable>.

Using Yacoubb's example:

If a potato cell is placed in a hypertonic solution, then it will plasmolyse. If it is placed in a hypotonic solution, then it will become turgid. If it is placed in an isotonic solution, then it will remain flaccid.

[Scooby]

Your hypothesis should also mention how the dependent variable will be measured

[Yacoubb]

Your hypothesis should also mention how the dependent variable will be measured

What would be the hypothesis for the Osmosis example I used including the method of measuring DV?