Biozone Questions

[peterpan101]

Hi
I have heard that Biozone is a good resource why is that so??

also Im doing the role of water page
and Im confused on the question about

the property important in the transport of glucose around the body
 and the biological signigifance of this

the property important in the cooling effect of evaporation
and the biological signigifance of this

[Stick]

I found the wording a bit weird as well for that page. This is what you want:

The property important in the transport of glucose around the body: The polarity of the water molecule.
Biological significance: It allows polar solutes - like glucose - to dissolve in water, making metabolic reactions possible.

The property important in the cooling effect of evaporation: The high latent heat of vaporisation of water.
Biological significance: It allows mammals to regulate their heat in warmer living conditions.

It's fairly generic in my opinion. This relates more to Unit 2 Chemistry, but it's still important to have a bit of an idea.

[peterpan101]

I found the wording a bit weird as well for that page. This is what you want:

The property important in the transport of glucose around the body: The polarity of the water molecule.
Biological significance: It allows polar solutes - like glucose - to dissolve in water, making metabolic reactions possible.

The property important in the cooling effect of evaporation: The high latent heat of vaporisation of water.
Biological significance: It allows mammals to regulate their heat in warmer living conditions.

It's fairly generic in my opinion. This relates more to Unit 2 Chemistry, but it's still important to have a bit of an idea.

thanks so much for your help have you done the question

on the modication of proteins page -why are these changes necasssary ?

[Stick]

Nah, I haven't touched proteins yet - only carbohydrates.

[polar]

on the modication of proteins page -why are these changes necasssary ?

a protein needs to have a very specific shape in order to function properly, for example, a glycoprotein for signalling needs to undergo glycosylation (adding carbohydrates onto the protein) so that it can be placed in the appropriate direction (carbohydrate on the outside of the cell) in a membrane for its signal to be detected

[peterpan101]

on the modification of proteins page -why are these changes necessary ?

a protein needs to have a very specific shape in order to function properly, for example, a glycoprotein for signalling needs to undergo glycosylation (adding carbohydrates onto the protein) so that it can be placed in the appropriate direction (carbohydrate on the outside of the cell) in a membrane for its signal to be detected

thanks

and last question is
that im having trouble working out the enzymes for lactose, maltose and sucrose (on the monosaccharides and disaccharides page) and where they are  ARE found

[Stick]

The enzymes for carbohydrates is easy - it's the same prefix and the suffix is -ase. So that gives us lactase, maltase and sucrase. I guess you'd be able to work out roughly where these enzymes are found as well - as each of these carbohydrates are ingested, it'd only make sense if they were secreted from the lining of the small intestine.

[peterpan101]

The enzymes for carbohydrates is easy - it's the same prefix and the suffix is -ase. So that gives us lactase, maltase and sucrase. I guess you'd be able to work out roughly where these enzymes are found as well - as each of these carbohydrates are ingested, it'd only make sense if they were secreted from the lining of the small intestine.

is this just something we should know ?

[pi]

The enzymes for carbohydrates is easy - it's the same prefix and the suffix is -ase. So that gives us lactase, maltase and sucrase. I guess you'd be able to work out roughly where these enzymes are found as well - as each of these carbohydrates are ingested, it'd only make sense if they were secreted from the lining of the small intestine.

is this just something we should know ?

Yep.

[peterpan101]

The enzymes for carbohydrates is easy - it's the same prefix and the suffix is -ase. So that gives us lactase, maltase and sucrase. I guess you'd be able to work out roughly where these enzymes are found as well - as each of these carbohydrates are ingested, it'd only make sense if they were secreted from the lining of the small intestine.

is this just something we should know ?

so do we need to know about working out what other types of enzymes are ?


Yep.

[pi]

The enzymes for carbohydrates is easy - it's the same prefix and the suffix is -ase. So that gives us lactase, maltase and sucrase. I guess you'd be able to work out roughly where these enzymes are found as well - as each of these carbohydrates are ingested, it'd only make sense if they were secreted from the lining of the small intestine.

is this just something we should know ?

Yep.

so do we need to know about working out what other types of enzymes are ?

What do you mean? Most enzyme substrates are obvious from the name of the enzyme (eg. lactase, ATPase, etc.)

[Stick]

And except from a few enzymes, almost all of them are secreted from somewhere in the digestive system.

[pi]

And except from a few enzymes, almost all of them are secreted from somewhere in the digestive system.

Are you sure?

[Stick]

For the main carbohydrates I would assume so.

[pi]

Oh right, carbohydrates. I thought you meant all enzymes o.O