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[quote author=t.boy007]ok.am an aspirant for now[/quote]Aiit boss...GOD WL ELP US AL

Obinnau: 1•butter. 2• B 3•A

Always give little reasons...

For biology and more chemistry tutoria, click on the link below
www.nairaland.com/1210309/jamb-2013-thread-biology-chemistry

[quote author=t.boy007]you've tried,but it's wrong...besides,are you an aspirant or student.if student which school and course?[/quote]undergraduate...studying Biochemistry at Uniosun...wat abou u

The organ situated in d pericardia cavity of a mammal is d
a.Heart
b.liver
c.stomach
d.spleen

2.The 4matn of water in tissue respiratn results from d
a.breakdown of water molecules
b.reductn of oxygen by hydrogen
c.reduction of co2
d.combination of water molecules

3.which of the followin produces hormones and enzymes
a.ileum
b.pancreas
c.gall bladder
d.kidney

4.which of the folowin vertebrates has most simple structured heart
a.Reptile
b.Fish
c.Mammal
d.amphibian

1.The greatest amount of energy will be obtained by d oxidation of 100kg of
a.meat
b.biscuits
c.sugar
d.butter

2.Bacteria in the large intestine of man ar important in
a.synthesis of vitamin k and B2
b.digestn of vegetables
c.synthesis of vitamins A and D
d.absorption of water

3.short sightdns cn b corectd by lenses wch ar
a.convex
b.concave
c.plano-convex
d.biconvex

b.

[quote author=t.boy007]Chemistry:
What is the substance used to confirm the test of alkanols?
Physics:
when a positively charged body is brought near a neutral gold leaf electroscope,what happens to the leaf?
Biology:
what is the name of the false germ cell in hydra?
Maths:
find the inverse of y=(3x + 4)[/quote]when alcohol is reacted with pcl5, it gvs off HCl......

Dont think hydra has false germ cell but heard of pseudomania in 100 level when discussion hydra wt a professor..

hmmm...nice

The link between nervous co-ordination and hormonal co-ordination is

a.cerebrum
b.hypothalamus
c.jugular
d.medull oblongata

[quote author=t.boy007]happy new month to you all[/quote]Wish you same boss

[quote author=t.boy007]ok.what is the compound present in the hydrophilic head of soaps and detergents?[/quote]Negatively charged carboxylates....please always give options as its jamb...Tanx....

Which of the following performs urinogenital function
a.ureter
b.seminal vesicle
c.kidney
d.urethra

Bring in questions please...

larri: D is d answer....valve prevent back flow of blood in veins dew 2 reduce pressure

Thats true boss.....

Which of the followin is a functn of valves in the vein
a.protect the veins against disease
b.filter out impurities
c.prevent external materials
d.prevent back flow of blood...

.

edreesabiodun: B. Symbiotic, although there are also non-symbiotic bateria in the rood nodules such as Nostoc and Chlostridium

Thats correct boss...You answered and supported it with something...dats nic...
Its actually Rhizobium leguminosarium the question is talking about.....

edreesabiodun: Of course no is. I'm just saying based on what I've read.

Aiit boss...

buzyguy: Oh,wel datz the general assumptn nd knwlegde,bt they do have..itz only fluorine dat possess a single oxidatn number -1 cuz it only hz S-hybrid orbitals where odaz av bof s nd p.thks

Remember they all have 1 as their valence electron......can u support with examples as evr1 is still learning

THe type of association between bacteria and the root noodus of leguminous plants is
a.parasitic
b.symbiotic
c.saprophytic
d.commensalism

The cells associated with bones are
a.chondroblasts
b.blastomere
c.osteocytes
d.lymphocytes

Please give options...remember its jamb..

mayorall: The mass of 800cm^3 of a gas X at s.t.p is 1.0g...what is the molar mass of x....volume at s.t.p 22.4dm^3

Using moles =volume/22.4dm3
rememba to convert the volume given to dm3..we divid the volume by 1000 to get it in dm3...

Moles now =0.8/22.4
moles = 0.03571

TO nw get the molar mass,we use
moles =mass/molar mass
making molar mass subject of the formular we have
molar mass = mass/moles
molar mass = 1/0.03571
molar mass = 28.0g

The molar mass is 28.0g/mol

mayorall: The mass of 800cm^3 of a gas X at s.t.p is 1.0g...what is the molar mass of x....volume at s.t.p 22.4dm^3

Using moles =volume/22.4dm3
rememba to convert the volume given to dm3..we divid the volume by 1000 to get it in dm3...

Moles now =0.8/22.4
moles = 0.03571

TO nw get the molar mass,we use
moles =mass/molar mass
making molar mass subject of the formular we have
molar mass = mass/moles
molar mass = 1/0.03571
molar mass = 28.0g

The answer is 28.0g
mola

Obinnau: calculations in chemistry!

Aiit get all those formulars I dropd as sum are still gonna cum in...bring in the calculation questions please.

edreesabiodun: LOL. I don't need a textbook to know exchange of meterial happen in the lymph or bones are attached to muscles by tendons. You should check your textbooks

Aiit boss but just wanna let you know LYMPH is just the fluid in the lymphatic system.......you can recheck your text books for that no one is an epitome of knowledge....one love

larri: the answer are uric acid, lungs,tendon and phloem......carbon(iv)oxide is a metabolic product y oxygen is a nutrient.....there is no metabolic product in d lymph vessel because d content in lymph vessel absorb from d villi of small intestine is emptyed @ d upper jungular back into d blood

But also remember liver act as both digestive and excretory organ...

buzyguy: Arrang da follown in orda:arterioles,venules,veins,aorta,artery,capillaries,vena cava

In what order and from where...

buzyguy: The volum occupied by the gas molecules z negligible compared to the volume of the container-what z the implication?

The gas molecules are small in relation to the distance between them...

edreesabiodun: Nope, it's Uric acid, Lymph and Ligament. Tendons is bones to Muscles.

Lolz...check your textbooks very well

buzyguy: Wich of the halogens does nt have variable oxidation state?

Halogens does not undergo variable oxidation state...their state is always -1

buzyguy: In hydrogen spectrum,the one at ground state is?

Lymer