Biology Unit 3 Questions Megathread

[Inside Out]

how are osmoregulation and bloodpressssure closely related? WHY IS IT THAT WHEN YOU INCREASE WATER YOU INCREASE BLOOD P[RESSUREa?/

[shinny]

how are osmoregulation and bloodpressssure closely related? WHY IS IT THAT WHEN YOU INCREASE WATER YOU INCREASE BLOOD P[RESSUREa?/

If you have a water balloon and you increase the volume by putting water into it, the balloon stretches and the pressure inside it increases. Same goes with blood vessels.

[Inside Out]

is a nerve impulse the same thing as an action potential

[shinny]

is a nerve impulse the same thing as an action potential

Yep.

[Kaille]

How exactly does bacteria cause diarrhea? lolwut.

Does the bacteria damage eptherial cells in the stomach?

[Russ]

Some do. Common method is to prevent Na+ uptake by villi. That creates an osmotic gradient that draws water into the lumen of the GIT and causes diarrhoea

[Kaille]

oh i see thanks. haha

[Drunk]

Do excitatory neurons lead to positive feedback and with inhibitory neurons leading to negative feedback?
AND
Is a neurohormone a neurotransmitter?

[WhoTookMyUsername]

Douchy says chlrophyll is a protein, is that correcyt?

Also

Can someone please describe how to number carbons on DNA / RNA, numerous sources say different things

[Russ]

Depends how you draw it but the carbon that links to the base is always carbon 1. From that you can work out the rest (phosphate = 5, free OH = 3)

[scocliffe09]

Douchy says chlrophyll is a protein, is that correcyt?

Also

Can someone please describe how to number carbons on DNA / RNA, numerous sources say different things

I don't think chlorophyll itself is a protein - it can certainly form protein complexes though.

[HERculina]

Douchy says chlrophyll is a protein, is that correcyt?

he said that you should just call it a porphyrin pigment i think. its chemically similar to a protein casue it contains nitrogen but its strucurally like a lipid cause it has a hydrocarbon tail that is hydrophobic and will suspend in the thylakoid membrane.

[Drunk]

What's the difference between bulk transport and active transport?

[Truck]

What's the difference between bulk transport and active transport?

Bulk transport is endo/exocytosis.

Active transport is the movement of a substance against the concentration gradient, typically requiring ATP. Bulk Transport is actually a type of active transport.

[Drunk]

oh alright, thanks bud