Cell Biology C

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Re: Cell Biology C

Postby c-trast » January 10th, 2015, 8:56 am

FidusAchates wrote:False. As temperature decreases, the cell produces more of the unsaturated. The double bonds in the hydrophobic tails create bends/kinks in the tails, preventing compact storage at lower temperatures. This maintains membrane fluidity and membrane fracture. A good example: fish that live in cold water have a higher concentration of unsaturated lipids per cell than fish that live in warmer climates.

Yes!

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(& another note, you needed to hide your answer)
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Re: Cell Biology C

Postby Magikarpmaster629 » February 18th, 2015, 7:06 pm

I'll revive this thread.


How do the different kinds of amino acid side chains affect the 3D shape of the protein?
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Re: Cell Biology C

Postby watermydoing14 » February 20th, 2015, 5:27 pm

Answer
The sequence of amino acid side chains affects the secondary and tertiary structure by forming hydrogen bonds in different locations of the polypeptide chain, affecting where alpha helices and beta sheets will be formed and where the alpha helices and beta sheets will be attracted to each other
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Re: Cell Biology C

Postby Magikarpmaster629 » February 21st, 2015, 12:47 pm

Yep :D
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Re: Cell Biology C

Postby watermydoing14 » February 21st, 2015, 6:24 pm

What is the structure and function of the Golgi Apparatus?
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Re: Cell Biology C

Postby Magikarpmaster629 » February 21st, 2015, 7:32 pm

It is
A group of spheres (It's hard to explain its shape) parallel to the Endoplasmic Reticulum, used to bring large pieces of matter in and out of the cell.
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Re: Cell Biology C

Postby watermydoing14 » February 21st, 2015, 8:57 pm

correct, your turn!
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Re: Cell Biology C

Postby Magikarpmaster629 » February 22nd, 2015, 7:13 am

Mad Cow Disease is a disease in cows caused by prions. Describe a prion, and how it spreads to other cells in the body.
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Re: Cell Biology C

Postby Magikarpmaster629 » February 22nd, 2015, 7:13 am

Sorry if that's not in the rules, I didn't check. :(
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Re: Cell Biology C

Postby boomvroomshroom » February 27th, 2015, 9:51 pm

Answer...
A self-replicating protein; all known mammalian-based prions infect mainly the brain and the nervous system and spread to peripheral sites through them.


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Re: Cell Biology C

Postby Magikarpmaster629 » February 28th, 2015, 6:48 am

I was looking for a more cell/molecule scale-based answer. Prions are disfigured proteins, and when these prions come into contact with undisfigured (normal) proteins, the normal proteins turn into prions, spreading the disease.

While Plague.inc is fun and all, it isn't very scientifically accurate :)

Your turn.
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Re: Cell Biology C

Postby boomvroomshroom » February 28th, 2015, 12:37 pm

Maybe not, but being the nerd I am, it made me go and look up a bunch of the diseases mentioned anyway.

Not sure if this one's in the rules either, but...

To lyse or not to lyse, that is the question: (pick the one that does lyse)
a. high solute concentration cell in high solute concentration environment
b. high solute concentration cell in low solute concentration environment
c. low solute concentration cell in low solute concentration environment
d. low solute concentration cell in high solute concentration environment

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Re: Cell Biology C

Postby Magikarpmaster629 » February 28th, 2015, 2:00 pm

Answer
D
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Re: Cell Biology C

Postby boomvroomshroom » February 28th, 2015, 5:17 pm

Sorry!
Answer: B
Explanation: When a cell lyses, it takes in too much water and explodes. If environment has less solute concentration than cell, water will move into the cell to try to reduce the cell's solute concentration so that it balances with the environment.

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Re: Cell Biology C

Postby Magikarpmaster629 » February 28th, 2015, 8:08 pm

Ah right, that makes sense.


Explain glycolysis.
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