Physics, Chemistry and Biology: Post your doubts here!

[ZaqZainab]

I know this is a little late, but for bio, focus on the questions on plants (nutrition, limiting factors, growth.) I personally find them a bit tricky! And read up on antibiotics, bacteria, and genetics, as if they ask questions on these topics they usually hold quite a few marks. For the inheritance unit, you should know how to do the genetic crosses, and know about the female hormones and how they change in conc, the role of the placenta, amniotic sac. The enzyme chapters are also important! Especially for digestion, know all the conversions.
Finally, just keep calm, and don't worry too much! Good luck!

what about ecosystem

 

[Poojaa]

what about ecosystem

oh yes! and ecosystems! ugh, I hate that unit, but they always have a question on it :/

 

[ZaqZainab]

Guys in Biology what does protein pores mean how do we explain it using the water potential

 

[MoatazKotb♥]

ZaqZainab rephrase the question didnt get it

 

[ZaqZainab]

ZaqZainab rephrase the question didnt get it

There is something know as the protein pores which i have no idea what it means :/ and thanks for your considerations
P.S how was Maths paper 42

 

[ZaqZainab]

different between lymph nodes and vessels?

 

[MoatazKotb♥]

aha now its easier They are used for substances that are not soluble in liquids (lipids) to move them easier in and out of a cell like from higher conc to lower conc etc like osmosis through a partially permeable membrane ( i think ;P )

For the math paper 4 i think u get it. probably B

 

[MoatazKotb♥]

ZaqZainab Vessels are used to carry and delivery needed material (Includes Veins, Capillaries, arteries and capillaries) . Lymph nodes and the lymph system carry lymph fluid and are used for filtration

 

[ZaqZainab]

aha now its easier They are used for substances that are not soluble in liquids (lipids) to move them easier in and out of a cell like from higher conc to lower conc etc like osmosis through a partially permeable membrane ( i think ;P )

For the math paper 4 i think u get it. probably B

Thanks
Hope for the Best I am hoping for an A* mine was not that bad other than the last question "n" thingy
'

Vessels are used to carry and delivery needed material (Includes Veins, Capillaries, arteries and capillaries) . Lymph nodes and the lymph system carry lymph fluid and are used for filtration

So Lymph vessels carry oxygen,glucose, vitamins......
Lymph node carry lymph fluid Sorry but what is lymph fluid is it not blood plasma? Filtration of? Agreed i am dumb about this as i have not learned this at school
but don't lymph nodes liquid(lymph fluid) stay in one place??
Are Lymph vessels included in the Lymph system??

 

[MoatazKotb♥]

ZaqZainab lymph fluid is the fluid that is collected by the lymphatic system after it has leaked from the capillaries and yes it is Blood plasma also the lymphatic system will drop/dump the lymph into the blood. and it contains/consists of the fluid that bathes the tissues,which comes from the blood and is drained by the lymphatic vessels as mentioned above and i think i will get A* in all except math so freaking hate it

 

[MoatazKotb♥]

BTW I edited it ZaqZainab check it now

 

[ZaqZainab]

Got it thanks Best of Luck for tomorrow
and yeah Good Night if you going to sleep <--- Just wanted to use this simile

 

[MoatazKotb♥]

HAHAHAH SLEEP ? NEVER IT IS A PM EXAM NEVER SLEEP EARLY !

 

[ZaqZainab]

Noooo it is a AM exam

 

[MoatazKotb♥]

LOOOOL Mine is PM HAHAHAHAHAH Sorry What variant r u ?

 

[AhmedAlii]

Noooo it is a AM exam

When is your exam and what varient are you??
Good luck!

 

[ZaqZainab]

Variant 32 is around 8 30 in the morning

 

[Lama AN]

People what are the negative feedbacks which are covered in the syllabus . Like weve got one negative feedback in vasoconstriction or dilation . Other places in the body ?

 

[AhmedAlii]

Variant 32 is around 8 30 in the morning

Good luck and please message me when you are done with it
I will be doing varient 1 at 12pm Greenwitch timing..

 

[ZaqZainab]

Cheating I will see to that but we are not allowed to discus the paper