₦airaland Forum

Jsplash: 1.Medulla Oblongata
2.Thyroxine nt sure
3.Epidydimis
4.Calciferol
5.Vit. D

Sorry for being late bro. I had a busy day. Am jst returning now!

Well, bro tnx for ur contribution. You tried very well. But you shoul know that MEDULLA OBLOGATA controls on the INVOLUNTARY ACTIONS like yawning, sneezing etc.

When the animal is hot, there is excess heat in the body. Blood flow in the dermal capillaries is stimulated, and the heat vessels in the skin dilated-this is called vasodilation.
Similarly, when the animal is cold, the blood vessels I the skin constricts-this is called vasoconstriction.
The skin does this so as to regulate the body temperature of the animal.
Normally, the flow of blood is controlled by the heart.
But on that node, in the brain there is an organ called HYPOTHALAMUS- it lies bellow the thalamus in the brain that is connected to the PITUARY gland. This hypothalamus regulates the body temperature, osmo-regulation and blood pressure.
So it is the hypothalamus and NOT the medulla oblongata.

Lateef9961: more qstn brox

ok I'm coming....

lirusehn: bro u try o buh u no get am

Hahahaha tell me ooo

Lateef9961: wrong nw.let me break it down 4 u.
Cancer is simply the abnormality in growth of cell.this when the cell becomes malignant.
So invarably,cäncer x nt a zoonotic disease
2.yellow fever is a virus disease transmitd by aedes mosquito.
The main victim of dix diseases is man.
3.trypanosomiasis is a diseases caused by mycobäcteria tuberculo$is (bacteria diseases). The main victim of the diseases ar man and cow.
Now.when an infectd cow meat is nt properly cooked,trypanosomiasis wil b authomaticaly transfer 4rm the infectd meat to the consumer. Cn u nw see dat it x a zoonotic diseases.
4.staphyloccoci is a sexual transmittd diseases otherwise knwn as venereal diseases. Man is the main victim 2

Good one here! You made me release that the protozoa {tryposome} lives in d salivary gland of a tse tse fly. It affects mainly farm animals like cow. The effect on them makes the cow suffer from fever-- I've forgotten d name of the fever. It also causes weakness to cow. Where there are too many cows, tse tse flies must be there.

You tried bro! I failed it woefully!!

lirusehn: U guyz ar trying o. Dez questnz of mine are foolish-like shey? Jez answer plz *winks*



U guyz ar trying o. Dez questnz of mine are foolish-like shey? Jez answer plz *winks*


[color=#006600][b][i]
1)A guy had an accident with his Dad. He got rushed 2 d hospital minutes lera. And suprisingly d guyz was d Doctor's son. Plz whozz d Doctor 2 d guy??

2) a straight tree stands anoda straight tree stands by itside bendind itz head,repectivley lies an egg upon egg. D total value form equalz to__________

3) in d morning i walk wif 4 legs in d afternoon wif 2 and in d night 3 what am i?

No 1;
The doctor is the victim's brother
No 2:
It seems it's further mathematics Logic and reasoning. The answer should be zero {0}, since two parallel line will only meet at infinity.

No 3: No attempt

Lateef9961: 1.Which of the ffg has 4 heart chambers?
A.reptilia b.pisces c.amphibian d.aves
2.The only stage where nitrogen is lost in the soil is?
A.nitrification b.denitrification c.nitrogen fixation d.none of the above
3.which of the ffg produce the largest energy 4 the body?
A.lipids b.carbohydrates c.starch d.glucose
4.In birds,the digestive enzymes ar stored in the ...........?
A.crop b.gizzard c.proventiculus d.small intestine.
5.which of the ffg is a zoonotic diseases?
A.cancer b.trypanosomiasis c.yellow fever d.staphyloccoci

No 5:
Cocci are bacteria that are circular in shape. They may stick 2geda to form chains {stretococci}, they may occur in bunch or cluster {staphyloccoci}, they may also occur in pairs i.e. they stick 2geda in pairs{diplococci}.
The causative agent is a bacterium.


Trypanosomiasis is caused by tse tse fly which causes sleeping sickness. Is not a zoonotic disease


Cancer is the outward growth of abnormal cells. Is not a zoonotic disease


Since a zoonotic disease is cured by a veterinary doctor, it must have been a disease related to farm animals. Two options now left, it's either option C or D



Peace#

Lateef9961: numba 1 and 5

silly me........amphibians have three chambered heart while AVES have four chambered heart. Three are well developed while one is not well defined. I deserved a FLOG!

Lateef9961: u got 8/10.u tried fa,u b guru o

wat are the two numbers I failed?? U knw dat Biology questions always look so simple but confusing, more so, biology is too wide!

My biology corrections
1C. 2B. 3D. 4C. 5B. 6D. 7C. 8B. 9B. 10D

Lateef9961: 6.where is the vasopresin hormone produced in the body?
A.kidney b. Pancreas c.head d.doudomen
7.where is urea produced in the body?
A.kidney b.liver c.bladder d.skin
8.A condication when uric acid is nt properly excreted 4rm the body is knwn as?
A.deuresis b.gout c.hyperuricamea d.hepatisis
9.The part of the brain that links the nervous system and hormonal system is?
A.hypothalamus b.cerebrum c.cerebellum d.thalami
10.The neurone that transmit impulse from the receptor to the CN system is?
A.motor nuerone b.intermidiate neurone c.sensory neurone d.affarent neurone.
Lest ì 4get,sister bucky and lirushen,pls contribute ur own qstn too we nid them

My answers
1C. 2B. 3A. 4C. 5C. 6A. 7B. 8B. 9A. 10C

Jewel Bukky: *clears throat*
ma try diz 1s see
1.C
2.D
3.D
4.C
5.B
6.D
7.C
8.D
9.B
10.D
Unc mike, oya mark ma paper.

Better trial. You scored 8/10
Did you jst call me Mike? Who told you that I'm Mike?

Lateef9961: 1.b 2.b 3.d 4.d 5.b 6.d 7.a 8.d 9.b 10.c

You tried. Your score is 6/10

mohammed121: Q1 u no dat NaCL is a strong base an all base ar 2 b react wit detergent QB aquar[strong H2O] or NH3 Qcit depend by d present of d element

dats for soapless detergent. NH3 and chlorine play a vital role. E.g in the manufacture of JIK detergent. Chlorine fights the germs as ammonia removes dirts.
N/B: cold water is used as solvent so dat it reduces d concentration of chlorine by d removal of HcL:
Cl2 + H2O ---------> HOCl + HCl
Then the presence of H2O2 boosts the detergent

mohammed121: when u ar doing terteration n LAB.wht dd use, as ur base dt ll disob n acid[H2SO4,HCL] an hw dd u prepare it pls explain.

TITRATION simply stands for the reaction between an acid and a base to form salt and water as the only products. This type of reaction is called NEUTRALIZATION reaction. Nacl is a salt produced by a reaction between a strong acid e.g Hcl and a strong base e.g NaOH;
Hcl + NaOH ---------> Nacl + H2O.
It is a normal salt because d reaction involves a strong acid and strong base. The salt produced is neither acidic nor basic.

Peace#

Biology
1. The most likely first colonizers of a bare rock are
A. Mosses. B. Ferns. C. Lichen. D. Fungi
2. The carrying capacity of a habitat is reached when the population growth begins to
A. Increase slowly. B. Increase exponetially. C. Slow down. D. Remain steady
3. The feature that links birds to reptiles in evolution is the possession of
A. Feathers. B. Beak. C. Skeleton. D. Scales
4. Which of the following plant structures lacks a waterproof cuticle?
A. Leaf. B. Stem. C. Root. D. Shoot
5. Which of the following possesses a mammary gland?
A. Dodgfish. B. Whale. C. Shark. D. Catfish
6.Which of the following is a polysaccaride?
A. Glucose. B. Sucrose. C. Maltose. D. Cellulose
7. From his study of Galapagos finches, Darwin derived his theory of evolution from
A. Comparative anatomy. B. Comparative physiology. C. Fossil remains. D. Comparative embryology
8. The basking of agama lizards in the sun is to
A.change the colour of their body. B.raise their body temperature to become active. C.fight to defend their territory. D.attract the female for courtship
9. The autonomic nervous system consists of neurons that control the
A. Voluntary action. B. Heart beat. C. Tongue. D. Hands
10. Which of the following is most advanced in the evolutionary trend of animals?
A. Liverfluke. B. Earthworm. C. Snail. D. Cockroach


Simple biology questions........goodluck!

Lateef9961: u are ryt 2 but wat i want u 2 knw x dat the boiling point and melting point and density stil depend on the arrangement of their atom.
Element e.g lead with closely packed atom bonded by a strong mettalic wil surely have a high density.

I said it before.
More chemistry or biology question

Lateef9961: yea,NO2 is the only oxide of nitrogen that dissolve in water to produce 2 acid,and it also the only acidic oxide that react with base to produce to two salt.
1.2NO2 +H2O ------>HNO2 +HNO3
2.NO2 +kOH ------>KNO2 + kNO3 +H20


THE 3RD QUESTION,U DNT GET IT.
The physical properties of an element depends on the arragment of their atom.lets us take metals 4 example,their atom are closely packed and held 2geda by mettalic bond das y they are very hard in terms of texture except 4 sodium and pottasium dat x nt hard and mercury dat x liquid at rum temp

You are right but that's their chemical properties. When you talk about physical properties of an element, depend on: Boiling point, density, solubility and melting point. But Boiling point plays a very vital role.
If you check ur explanation well, u'll observe dat u re xplainin d factors listed above

Lateef9961: A.the important of NaCL in the productn of soap i$?
B.the oxide of nitrogen that form to acid wen reacted wit H2o is?
C.the chemical properties of an element is determine by the number of valence elecron in itx shell,while the physical properties depends on what?

A: the addition of Nacl precipitates the soap from it's impurities in soap production

B: the oxides of nitrogen that form acid rain as follows:
N2 + O2 ------> 2NO
2NO + O2 ------> 2NO2
Then the NO2 reacts with SO2 etc..
It is not only one oxide of N2 dat causes acid rain. Infact in biology we learnt dat all oxides of nitrogen contribute to dat.

C: the physical properties are determined by their boiling points

mohammed121: whch couse ar u my is chemistry 300l

am still a jambite oo. Medicine aspirant

mohammed121: dat is y i say 4m periodic table if u srudy periodic table u wll knw d ans or use shell obital.

ar u preparing for d pume? If yes, let's rock jamb past questions!

Lateef9961: @Ikemsinachi,am a veterinary medicine aspirant,what of u?

can we chat on 2go? Infinity111

mohammed121: dat is y i say 4m periodic table if u srudy periodic table u wll knw d ans or use shell obital.

ur question isn't understandable.

Lateef9961: @Ikemsinachi,am a veterinary medicine aspirant,what of u?

medicine and surgery

mohammed121: 4m periodic table electron increase 4m left 2 right but dicrease down d group. Y? pls CHEM IS TRY student i ned ans 2 ds quesion?

be specific. Is it electropositives or electronegatives. Is it atomic radius or ionization energy etc. Tell us!!

Lateef9961: Apart from trioxonitrate of Na and k that decompose into dioxonitrate,all other mettalic trioxonitrate decompose into their oxide and No2 gas is evolved

which course are you pursuing?

Abokii8: FOR CHEMISTRY GURUS.....BRAIN TEASER... A HANDSOME GIFT AWAIT ANYBODY WITH SATISFACTORY EXPLANATION. Q1, Explain the following experimental observations: A, the presence of peroxides reverses the orientation of group in addition of hydrogen halide to alkenes. B, halides of lithium are soluble in organic solvents,but they are either deliquescent or highly hydrated,why? C,state the effect of strong heating on the trioxocarbonate and trioxonitrate salts of calcium. D, Aluminium does not corrode like iron. Explain.

No A: All alkenes undergo addition reactions with the hydrogen halides. A hydrogen atom joins to one of the carbon atoms originally in the double bond, and a halogen atom to the other.

For example, with ethene and hydrogen chloride, you get chloroethane:

Abokii8: FOR CHEMISTRY GURUS.....BRAIN TEASER... A HANDSOME GIFT AWAIT ANYBODY WITH SATISFACTORY EXPLANATION. Q1, Explain the following experimental observations: A, the presence of peroxides reverses the orientation of group in addition of hydrogen halide to alkenes. B, halides of lithium are soluble in organic solvents,but they are either deliquescent or highly hydrated,why? C,state the effect of strong heating on the trioxocarbonate and trioxonitrate salts of calcium. D, Aluminium does not corrode like iron. Explain.

No C: Trioxonitrate(V) are decomposed by heat to form products that are determined by the position of the metallic component in the electrochemical series. Apart from potassium, sodium and lead trioxonitrates(V), all others contain water of crystallization that dissolve the salts when heated. The salts are said to crackle when heated and will only decompose when the entire water content is driven off.
A: when caco3 is heated thermally, it produces cao and co2
No B: this is because halides of lithium belongs to S-block. I.e they form hydroxoide on reaction with water.
No D; somebody got it very correct.

I lyk dis

encryptjay: check ur quesion, it's meant to be electronegative nt electroposive.

yep, it's electronegative. I was cnfused b4. Nt electropositive.

Lateef9961: U almst got it all.
1.c 2.b 3.a 4.b 5.c

tnx! Put up 2 10 on both chem & bio. 10 qustns on each.

Lateef9961: U almst got it all.
1.c 2.b 3.a 4.b 5.c

i tot no3 was ethen, neva knew it was ethyne.

Lateef9961: Chemistry qstns.
1.The most reactive electropositive element is?
A.CL2 b.I2 C.FL2 D.Br2
2.The gas given off in swamp is often known as?
A.C2H4 B.CH4 C.C2H2 DC3H6
3.Polymerization of C2H2 gives?
A.C6H6 B.C6H6OH C.C4H8 D.C3H6
4.Calcium flouride is used to lowered the temp from ............... To ............. During the electrolysis of calcium chloride?
A.800 to 600 b.850 to 650 C.700 to 500 d.750 to 650
5.which of this metal burns with crimson colour?
A.Na b.k C.li D.Fr

i ve supplied d answers. Do ur correction and post others both bio, chem & phy