BIOLOGY QUESTIONs...POST ALL QUESTIONS HERE

[sksuriza]

rite mate


galaya001's description is quite good

 

[Muhammad Talha]

another point the reptile child develops in egg....

yeah thats okay...thnx sksuriza....

 

[sksuriza]

dn mention....
it ws my pleasure

 

[Silent Hunter]

WHAT IS A TEST CROSS? WHY IS IT DONE?

 

[Muhammad Talha]

The test cross is a process in which the organisms showing the dominant trait is crossed with the organism having the recessive trait (tt) to
determine the genotype of the organism showing the dominant trait that whether the organism is hetrozygous(Tt) or homozygous(TT) for the dominant allele....

 

[Silent Hunter]

any example?

 

[Muhammad Talha]

if the organism is heterozygous dominant(Tt) than half the no of offsprings will show the dominant trait n the other half will show the recessive trait.If the organism is homozygous dominant(TT) than all the offsprings will show the dominant trait...

 

[Muhammad Talha]

any example?

For example:
Genotypes: TT x tt
Offsprings: Tt,Tt,Tt,Tt.

 

[D0cEngi]

thnx talha as u helped me in one of the ques i was having the most problem with.....

 

[Muhammad Talha]

thnx talha as u helped me in one of the ques i was having the most problem with.....

My pleasure.....

 

[Silent Hunter]

thanks............and what is monohybridinheritance ?????? is it in our syllabus? and what is the method of making single cell proteins????

 

[abcde]

Inheritance involving only one pair of contrasting traits is called monohybrid inheritance. So yes, it is in our sy and comes in the formof test crosses etc, etc.
Single cell proteins such as mycoprotein are manufactured on a large scale using fermenters. It is made from a fungus called fusarium. A temperature of 30*C is maintained. The culture medium contains glucose and mineral salts. The continuous operation system is used.

 

[Silent Hunter]

okay............and where is the chapter of health disease and medicine in the syllabus?? (m specifically refering to jones and jones endorsed book chapter 13)

 

[Nibz]

^ You should at least press that 'Thank' button for those who've helped you!

 

[Silent Hunter]

oh ............ sorry i jus forgot ....... silly me

 

[HamzaAsghar]

http://www.xtremepapers.me/CIE/Cambridg ... 7_qp_1.pdf

Question 7 please

 

[Muhammad Talha]

oh ............ sorry i jus forgot ....... silly me

N where is my thanx????

 

[Silent Hunter]

oh ............ sorry i jus forgot ....... silly me

N where is my thanx????

THERE YOU GO :sorry:

 

[Silent Hunter]

http://www.xtremepapers.me/CIE/Cambridge%20O%20Levels/5090%20-%20Biology/5090_s07_qp_1.pdf

Question 7 please

u must know that normal %age of co2 z 0.04 so at that point the graph is moving upwards as the concentration of co2 z increasing ............ limiting means that as we increase the concentration of co2 the photosynthesis also increases....the low concentration was limiting the photosynthesis but as u iNcrease the concentration co2 the photosynthesis also increases AND IF THE CONCENTRATION WAS NOT INCREASED THE RATE OF PHOT. WOULD HAVE BEEN CONSTANT THEN CUZ OF LESS CONCENTRATION OF CO2

HOPE ITS HELPFUL

 

[Soulgamer]

Need Urgent Help!! MCQ.28

http://www.xtremepapers.me/CIE/Cambridg ... _qp_12.pdf


A detailed answer would be highly appreciated. :good: