Biology; Chemistry; Physics: Post your doubts here!

[funky brat]

Yes transverse but shown from front view

ventral means that. Our dorsal side is the back of our body and ventral the front. For example in insects, the outer part is dorsal and underside is ventral.

 

[funky brat]

How are they co-dominant? Does a person having IaIo have a blood group O?

No, it's A of course.

 

[Dark Destination]

Help wid 19 plzView attachment 42409

Is the answer C?

 

[exploded diper]

It's the cross section of front view.

but i dont understand which part is which ....and what is extending.......in the diagram he showed...

 

[Lilly2318]

Help wid 19 plzView attachment 42409

 

[Lilly2318]

Is the answer C?

HCL

 

[Lilly2318]

Is the answer C?

yes

 

[funky brat]

Can somebody just give the points that should be included in the answer to this :
Q Describe the part played by decomposers in a food chain
Q describe how organisms in a food chain form what is known as pyramid of biomass.

Decomposers- fungi, bacteria- saprophytes- help to reduce the amount of organi matter that would otherwise be collected as heaps of waste. They carry out extracellular digestion, release enzymes onto substratum then absorb products, add names.
Organisms themselves form the biomass, they contain eneregy that is passed on from one to other. At each trophic level there are energy losses. Each organism takes energy from another organism and then utilises it for functions and pass it on, hence the shape of pyramid indicating loss of energy at each level.

 

[funky brat]

but i dont understand which part is which ....and what is extending.......in the diagram he showed...

I don't know how to explain. See a person is standing straight. If you remove a layer from the front of his chest, all the structures will be revealed like lungs and the inner parts.

 

[Dark Destination]

yes

With all other options, you will get a salt and water.
But with option C, you will also get HNO3, which is nitric acid.
It might be difficult to extract Magnesium sulfate from there...

Even i am confused about this question. Can someone explain? :3

 

[Lilly2318]

With all other options, you will get a salt and water.
But with option C, you will also get HNO3, which is nitric acid.
It might be difficult to extract Magnesium sulfate from there...

Even i am confused about this question. Can someone explain? :3

normally how much do u score in p1. ?

 

[Dark Destination]

normally how much do u score in p1. ?

36+

 

[Lilly2318]

36+

thats way beettter than mines. any tips?

 

[Dark Destination]

thats way beettter than mines. any tips?

Read the questions properly. Out of the 4 options, two can be ticked off easily.
Then from a choice of two, using reasoning and logic to find out the right answer.
This works for all mcq papers, of all subjects.

 

[exploded diper]

I don't know how to explain. See a person is standing straight. If you remove a layer from the front of his chest, all the structures will be revealed like lungs and the inner parts.

yep i got tht....but y r we increasing the thorax from above....shouldnt it be towards us if the person is standing infront of us.........

 

[princess Anu]

During pregnancy, where does mitosis occurs in the cells of embryo?
isn't it only in uterus wall? why in oviduct?

 

[Suhaib]

Can we draw diagrams in broad questions to help us explain our answers in biology ?

Yes u can, my teacher told me that

 

[Suhaib]

yep i got tht....but y r we increasing the thorax from above....shouldnt it be towards us if the person is standing infront of us.........

And i got u, yep u r rite but how can u show outward movement by drawing a line ?
I've confirmed that from my teacher..

 

[FLRNAB]

With all other options, you will get a salt and water.
But with option C, you will also get HNO3, which is nitric acid.
It might be difficult to extract Magnesium sulfate from there...

Even i am confused about this question. Can someone explain? :3

To get soluble salt you need to heat the solution to saturation point.
If you boil HNO3 you would die or faint. See effects of breathing in HCL.
I think the same effects would be experienced for Nitric Acid.

 

[Dark Destination]

To get soluble salt you need to heat the solution to saturation point.
If you boil HNO3 you would die or faint. See effects of breathing in HCL.
I think the same effects would be experienced for Nitric Acid.

So are you saying that if we heat a solution of HNO3 we will die?

But why does its presence not allow us to collect MgSO4?

Why are the other options right?