Physics, Chemistry and Biology: Post your doubts here!

[Phoenix Blood]

When both of them contract, the diamter of their lumen decreases. Thus blood is further channeled to a specific area
The opposite occurs in relaxation

I mean the atria and ventricled of the heart. How is the blood pushed in and out by their movement??

 

[Phoenix Blood]

What are B and T lymphocytes?

 

[Heba A.Moety]

What are B and T lymphocytes?

b lymphocytes are those produced in bone marrow and they have protein on their outer surface while t lymphocytes mature in thymus and they have a t-cell receptor on their cell surface, they are both types of WBCs and play imporrtant roles in defence system. Anyway if u r taking biology 0610, u dont have to go in details about this (thats what my teacher said)

 

[Phoenix Blood]

b lymphocytes are those produced in bone marrow and they have protein on their outer surface while t lymphocytes mature in thymus and they have a t-cell receptor on their cell surface, they are both types of WBCs and play imporrtant roles in defence system. Anyway if u r taking biology 0610, u dont have to go in details about this (thats what my teacher said)

But the extended curriculum demands knowledge for this too. Thanks, but

 

[ManalMansoor]

Specifically what?

Organic chemistry as a whole :'(

 

[Mai(M4!)]

what else should i study the night of the alternative to practical chemistry paper in addition to identification of anions, cations and gases and apparatus names ????
help please

 

[Awesome12]

what else should i study the night of the alternative to practical chemistry paper in addition to identification of anions, cations and gases and apparatus names ????
help please

Moles and speed of reaction

 

[shoaib672002]

Moles and speed of reaction

 

[Awesome12]

View attachment 39780

 

[shoaib672002]

View attachment 39781

That was Quick!!!!

 

[shoaib672002]

 

[shoaib672002]

ANSWER PART C ONLY

 

[Heba A.Moety]

But the extended curriculum demands knowledge for this too. Thanks, but

i'm also taking extended curriculum, in the syllabus they just mentioned the production of lymphocytes not T and B particularly. still it would be better to have some knowledge about them, and here is more information

 

[Phoenix Blood]

To find which surface area looses most water vapour in an experiment, why can't we use an evergreen plant?

 

[Phoenix Blood]

How does the umblical cord break?

 

[Phoenix Blood]

What's the difference b/w vulva and vagina and urethra?

 

[♣♠ Magnanimous ♣♠]

How does the umblical cord break?

do u mean where does it go after birth of child.

 

[Phoenix Blood]

What's the difference between still-birth and a miscarriage?

 

[Phoenix Blood]

do u mean where does it go after birth of child.

Like, how does it break for the baby to be let out?

 

[♣♠ Magnanimous ♣♠]

Like, how does it break for the baby to be let out?

baby can be let out from uterus but after it is cut through scissors by doctors.