bio chem

[ridge]

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HI
nEED HELP
ONE STRAND OF DNA has 20%A,30%T40%C.WHAT is the %of C on other strand?
10
20
50
80
90
explain please

 

[fido!]

the ans is 10

HI
nEED HELP
ONE STRAND OF DNA has 20%A,30%T40%C.WHAT is the %of C on other strand?
10
20
50
80
90
explain please

 

[syk]

HI
Hi!
Its 50.

A+G=T+C

 

[inder]

the ans is 10

can anyone please help me answer this

a slight detachment of retina results in decrease in length of optical centre and subject therefore exhibits

- near sightedness
-far sightedness
-strabismus
-nystagismus
please explain!!! 😕

 

[ridge]

ans is hyepermyopia/nearsightedness

 

[ridge]

Thanks prady and syk.

 

[inder]

😕

ans is hyepermyopia/nearsightedness

thanks ridge
if there is a explanation can u send it ,it will help me to understand.
other question

1.the enzyme RNA polymerase catalyzes the synthesis of specific RNA when provided with which as template

- t RNA
- rRNA
-mRNA
-double-stranded DNA

2.each of the event can occur at synapsis except one.which is exception?
- summation
-ihibation
-synaptic delay
-repitative discharge
-saltatory conduction

 

[fido!]

the answer is myopia/near sightedness

can anyone please help me answer this

a slight detachment of retina results in decrease in length of optical centre and subject therefore exhibits

- near sightedness
-far sightedness
-strabismus
-nystagismus
please explain!!! 😕

 

[fido!]

1.rna polymerase makes any type of rna from dna,thus the answer is ds dna!

2.the exception is saltatory conduction as it can occur only at nodes of ranvier!
hope this helps! 👍
prady!

-

 

[inder]

1.rna polymerase makes any type of rna from dna,thus the answer is ds dna!

2.the exception is saltatory conduction as it can occur only at nodes of ranvier!
hope this helps! 👍
prady!

-

thank u so much for the answers 👍

 

[fido!]

u r most welcome,inder!any more questions,that i can help u out with?will be glad to,provided i know! 😉

thank u so much for the answers 👍

 

[ridge]

:
you can see previous posts,some guy has helped me with that question and he had mentioned a website about that answer also.
for ur other questions,Prady has answered and i agree with those answers too.

 

[fido!]

thanks ridge!when r u guys taking up ur exams?

:
you can see previous posts,some guy has helped me with that question and he had mentioned a website about that answer also.
for ur other questions,Prady has answered and i agree with those answers too.

 

[ridge]

Hi Prady,
i am taking my exam in next 15 days and what about you?
i am really worried abt the exam, i am not very well prepared for it.

 

[fido!]

SAME HERE,BUDDY!I ALSO FEEL,I'M UNPREPARED!BUT I HAVE TO TAKE UP MY EXAM AT ANY COST TO MEET THE APPLICATION DEADLINES!I HAVE EXACTLY 11 DAYS TO GO......!SO WISH ME LUCK! 😉
TAKE CARE !ALL THE BEST TO U TOO!

Hi Prady,
i am taking my exam in next 15 days and what about you?
i am really worried abt the exam, i am not very well prepared for it.

 

[ridge]

all the best
tk care.which universities are you going to apply?i know we have less time for meeting deadlines of few universities.
lets hope for the best.

 

[fido!]

thanks pal!well,i'm thinking of applying to upenn,nyu&bu,to name afew!it also depends upon the score!
take care!all the best to u too! 👍

all the best
tk care.which universities are you going to apply?i know we have less time for meeting deadlines of few universities.
lets hope for the best.

 

[inder]

thanks pal!well,i'm thinking of applying to upenn,nyu&bu,to name afew!it also depends upon the score!
take care!all the best to u too! 👍
please can u help me with this
1. in hypoxic skeletal muscle electrons carried by NADH are used to produce which substance
-ethanol
-citrate
-lactate
-pyruvate
acetyl-coA
2. bile salts promote digestion and absorption of fat by

-converting all fatty acid to soap
-neutrlizing acid from stomach
-maintaining optimal ph for lipase activity
-forming emulsion of fatty acid and glyceroid
-stimulating secretion of pancreatic and intestinal juices 😕

 

[celestial]

1 pyruvate
2 emulsification of fatty acids and glycerol

please correct me if i am wrong.....

 

[dent02]

1 pyruvate
2 emulsification of fatty acids and glycerol

please correct me if i am wrong.....

why not lactate?
pls explain

 

[ridge]

yes why not lactate,its hypoxic state.

 

[inder]

1 pyruvate
2 emulsification of fatty acids and glycerol

please correct me if i am wrong.....

even i thought the answer is
- lactate 🙄

one more
1. facilitated diffusion differs from active transport in that net transport by facilitated diffusion

- has transport max
-uses ATP as energy source
-requires conc. gradient
-occurs as an endergonic process

 

[ridge]

ANSWER[/B]-occurs as an endergonic process

 

[celestial]

its hypoxic state ...right..
lactate will be formed but NADH is required for conversion of lactate to pyruvate...by enzyme lactate dehydrogenase

please correct me...if i am wrong

 

[fido!]

i think the answer is transport max.correct me if i'm wrong!

ANSWER[/B]-occurs as an endergonic process

 

[celestial]

i agree with ridge....
facillitated diffusion requires conc gradient....
transport maximum is related to active transport

 

[fido!]

dear inder,
can u plz tell where did u get the Q.2 from?is it from the past papers?do u have the answer for it?

even i thought the answer is
- lactate 🙄

one more
1. facilitated diffusion differs from active transport in that net transport by facilitated diffusion

- has transport max
-uses ATP as energy source
-requires conc. gradient
-occurs as an endergonic process

 

[fido!]

BUT IT REQUIRES A CARRIER/TRANSPORTER TOO,RIGHT?

i agree with ridge....
facillitated diffusion requires conc gradient....
transport maximum is related to active transport

 

[fido!]

A FEW Q'S .....
1.COMPLEMENTARY DNA LIBRARIES INCLUDE
A.THE GENES WHICH R TRANSCRIBED INTO mRNA
B.SINGLE STRANTED DNA SYNTHESIZED BY REVERSE TRANSCRIPTION

2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
1.CLOSURE OF AV VALVES
2.TURBULENT BLOOD FLOW THRO ARTERY

 

[fido!]

hi there,
anyone to explain the answer?

BUT IT REQUIRES A CARRIER/TRANSPORTER TOO,RIGHT?

 

[fido!]

anyone to answer these q.......??

A FEW Q'S .....
1.COMPLEMENTARY DNA LIBRARIES INCLUDE
A.THE GENES WHICH R TRANSCRIBED INTO mRNA
B.SINGLE STRANTED DNA SYNTHESIZED BY REVERSE TRANSCRIPTION

2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
1.CLOSURE OF AV VALVES
2.TURBULENT BLOOD FLOW THRO ARTERY

 

[smily]

anyone to answer these q.......??

ist heart sound----mitral and tricuspid valve closure
2nd heart sound---aortic and pulmonary valve closure

 

[celestial]

yes you are right facilitated diffusion requires a carrier for transportation ...

A FEW Q'S .....
1.COMPLEMENTARY DNA LIBRARIES INCLUDE
A.THE GENES WHICH R TRANSCRIBED INTO mRNA
B.SINGLE STRANTED DNA SYNTHESIZED BY REVERSE TRANSCRIPTION

2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
1.CLOSURE OF AV VALVES
2.TURBULENT BLOOD FLOW THRO ARTERY

i think
1 a
2 a

please correct me if i am wrong....

 

[ridge]

facilitated diffusion requires a carrier for transportation ... but where this carrier will function?it requires conc gradient and all the other choices in this question are in relation to active transport only.so ans is conc.gradient.



2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
1.CLOSURE OF AV VALVES
2.TURBULENT BLOOD FLOW THRO ARTERY
ans is (2)
its while measuring B.P AND NOT WHILE AUSCULTATING CHEST WALL THAT WE CAN LISTEN TO HEART SOUNDS...THESE WERE KORTKOFF SOUNDS.
HOPE EVERYTHING IS CLEARED TO PRADY AND CELESTIAL.

 

[ridge]

1.COMPLEMENTARY DNA LIBRARIES INCLUDE
A.THE GENES WHICH R TRANSCRIBED INTO mRNA
B.SINGLE STRANTED DNA SYNTHESIZED BY REVERSE TRANSCRIPTION

ans is B

 

[syk]

Hi,

I think it is conc gradient since in the question they have asked how facilitated diffusion differs from active transport.active transport is against conc gradient.Other choices impies to both facilated diffusion and active transport as well.

facilitated diffusion requires a carrier for transportation ... but where this carrier will function?it requires conc gradient and all the other choices in this question are in relation to active transport only.so ans is conc.gradient.



2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
1.CLOSURE OF AV VALVES
2.TURBULENT BLOOD FLOW THRO ARTERY
ans is (2)
its while measuring B.P AND NOT WHILE AUSCULTATING CHEST WALL THAT WE CAN LISTEN TO HEART SOUNDS...THESE WERE KORTKOFF SOUNDS.
HOPE EVERYTHING IS CLEARED TO PRADY AND CELESTIAL.

 

[fido!]

hi ridge,
itz confusing!!!u tell the answer is (2),but while explaining u r telling while measuring b.p.,we listen to heart sounds!please clarify!



2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
1.CLOSURE OF AV VALVES
2.TURBULENT BLOOD FLOW THRO ARTERY
ans is (2)
its while measuring B.P AND NOT WHILE AUSCULTATING CHEST WALL THAT WE CAN LISTEN TO HEART SOUNDS...THESE WERE KORTKOFF SOUNDS[/B].
HOPE EVERYTHING IS CLEARED TO PRADY AND CELESTIAL.[/QUOTE]

 

[smily]

yes you are right facilitated diffusion requires a carrier for transportation ...

A FEW Q'S .....
1.COMPLEMENTARY DNA LIBRARIES INCLUDE
A.THE GENES WHICH R TRANSCRIBED INTO mRNA
B.SINGLE STRANTED DNA SYNTHESIZED BY REVERSE TRANSCRIPTION

2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
1.CLOSURE OF AV VALVES
2.TURBULENT BLOOD FLOW THRO ARTERY

i think
1 a
2 a

please correct me if i am wrong....

1. b
2.a

 

[fido!]

thanks for the explanation!

facilitated diffusion requires a carrier for transportation ... but where this carrier will function?it requires conc gradient and all the other choices in this question are in relation to active transport only.so ans is conc.gradient.

 

[smily]

facilitated diffusion requires a carrier for transportation ... but where this carrier will function?it requires conc gradient and all the other choices in this question are in relation to active transport only.so ans is conc.gradient.



2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
1.CLOSURE OF AV VALVES
2.TURBULENT BLOOD FLOW THRO ARTERY
ans is (2)
its while measuring B.P AND NOT WHILE AUSCULTATING CHEST WALL THAT WE CAN LISTEN TO HEART SOUNDS...THESE WERE KORTKOFF SOUNDS.
HOPE EVERYTHING IS CLEARED TO PRADY AND CELESTIAL.

we are talking about heart sounds.Kortkoffs sounds are related to arteries

 

[fido!]

ok...but ridge,if that is the case,then why u have marked 2,instead of 1?i'm still confused!

we are talking about heart sounds.Kortkoffs sounds are related to arteries

 

[celestial]

hi ridge...
its bit confusing but...
i have some doubt ....
1.COMPLEMENTARY DNA LIBRARIES INCLUDE
A.THE GENES WHICH R TRANSCRIBED INTO mRNA
B.SINGLE STRANTED DNA SYNTHESIZED BY REVERSE TRANSCRIPTION

when c dna libraries are formed m rna is isolated from tissue expressing the gene and then m rna template is reverse transcribed into cDNA using reversetransciptase....then a double stranded c dna is formed......

can you please help me with this......according to this answer should not be A

 

[ridge]

hi

2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
2.TURBULENT BLOOD FLOW THRO ARTERY
OK,SEE,QUESTION SAYS while determining B.P. when is FIRST HEART SOUND HEARD ,,it is only because of WHEN BLOOD FLOW THRU ARTERIES IS TURBULENT
for heart sounds to be heard we dont have to measure b.p,we can simply heard heart sound while keeping stethoscope over the chest to listen 1st and 2nd heart sounds.why will we keep stethoscope on chest while determining blood pressure?????????????to hear first heart sound.???????
i think i cant explain more than this..i feel the answer that way.Hope this helps.

 

[ridge]

hi celestial,
first of all what is cdna?
its complementary dna,which is single stranded dna formed from mRNA BY enzyme reverse transcriptase so our answer will be (B)
1.COMPLEMENTARY DNA LIBRARIES INCLUDE

B.SINGLE STRANDED DNA SYNTHESIZED BY REVERSE TRANSCRIPTION
I WILL TRY TO ANSWER IT MORE DETAILED IF U R NOT SATISFIED.LET ME KNOW,I WILL WORK ON THIS QUESTION.

 

[ridge]

ok...but ridge,if that is the case,then why u have marked 2,instead of 1?i'm still confused!

hI PRADY I THINK U HAVE AGAIN MISREAD THIS POST,I AM NOT WRITING ANSWER 1 ITS BEEN POSTED BY smily who is favoring option 1 ,i am in favor of coice 2.

 

[fido!]

THANKS A ZILLION TIMES FOR THE EXPLAINATION! 🙂 I OWE U ONE!SORRY FOR THE TROUBLE!

hi

2.THE FIRST HEART SOUND HEARDWHILE DETEMINING blood pressure IS DUE TO
2.TURBULENT BLOOD FLOW THRO ARTERY
OK,SEE,QUESTION SAYS while determining B.P. when is FIRST HEART SOUND HEARD ,,it is only because of WHEN BLOOD FLOW THRU ARTERIES IS TURBULENT
for heart sounds to be heard we dont have to measure b.p,we can simply heard heart sound while keeping stethoscope over the chest to listen 1st and 2nd heart sounds.why will we keep stethoscope on chest while determining blood pressure?????????????to hear first heart sound.???????
i think i cant explain more than this..i feel the answer that way.Hope this helps.

 

[fido!]

oooopsy!sorry!

hI PRADY I THINK U HAVE AGAIN MISREAD THIS POST,I AM NOT WRITING ANSWER 1 ITS BEEN POSTED BY smily who is favoring option 1 ,i am in favor of coice 2.

 

[celestial]

thanks ridge for your patience ......i appreciate your efforts........
thanks once again.....for explanation..may be i was not reading the choice correctly......
its become a good thread to discuss questions....lets keep posting more questions......

 

[ridge]

thanks to prady,celestial,smily,syvk.
here we come to know upto what level are we?
how detailed we should study to answer the questions confidently,but i am failing in it.
hope next time i will be much prepared. and answering with more expanations.
keep posting good questions,nothing crap.

 

[inder]

dear inder,
can u plz tell where did u get the Q.2 from?is it from the past papers?do u have the answer for it?

the question on facilated diff is from old papers this question has been repeated couple of times .