NEET
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Cytochromes are only found in mitochondria.
Reason (R): Cytochrome b5 occurs in the endoplasmic reticulum.- a)Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
- b)Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
- c)Assertion is false but Reason is true.
- d)Assertion is true but Reason is false.
Correct answer is option 'C'. Can you explain this answer?
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason(R) just below it.Read the Statement carefully and mark the correct answer-
Assertion(A): Cytochromes are only found in mitochondria.
Reason (R): Cytochrome b5 occurs in the endoplasmic reticulum.
Assertion(A): Cytochromes are only found in mitochondria.
Reason (R): Cytochrome b5 occurs in the endoplasmic reticulum.
a)
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
b)
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
c)
Assertion is false but Reason is true.
d)
Assertion is true but Reason is false.
Mulinti Omkr answered • 22 minutes agoCytochromes are found in mitochondria, chloroplSt, endoplasmic reticulum so if the statement is cytochromes are only found in mitochondria means this statement is wrong
mitochondria: as we already studied in the lesson named respiration in plants the cytochrome c is present in the innermitochondrial memdrane
chloroplast: cytochrome b6f complex... plastoquinol-plastocyanic reductase i... more
mitochondria: as we already studied in the lesson named respiration in plants the cytochrome c is present in the innermitochondrial memdrane
chloroplast: cytochrome b6f complex... plastoquinol-plastocyanic reductase i... more
Erythropoiesis starts ina) Red bone marrow b) Spleenc) Kidneysd) LiverCorrect answer is option 'D'. Can you explain this answer?
Piya Thakur answered • 27 minutes agoIn the early development of a fetus , erythropoiesis take place in the yolk sac, spleen and liver.After birth, all erythropoiesis occurs in bone marrow.
Md Sahabuuddin asked • 3 hours agoA point object O is placed on the principal axis of a convex lens of focal length 20 cm at a distance of 40cm to the left of it. The diameter of the lens is 10 cm. If the eye is placed 60 cm to the right of the lens at a distance h below the principal axis, then the maximum value of h to see the image will be- a)0
- b)5 cm
- c) 2.5 cm
- d)10 cm
Correct answer is option 'C'. Can you explain this answer?
a)
0
b)
5 cm
c)
2.5 cm
d)
10 cm
what ismeant budding?
Awantika Gupta answered • 59 minutes agoBudding is a kind of asexual reproduction which usually takes place in potato hydra yeast and sponges.
Amrish Kumar Pandey A asked • 4 hours agoSodium carbonate cannot be used in place of ammonium carbonate for the identification of the fifth group radicals . This is because the- a)Sodium ions will interfere in the detection of the fifth group radicals
- b)Concentration of carbonate ions is very low
- c)Sodium will react with acidic radicals
- d)Magnisium will be precipitated
Correct answer is option 'A'. Can you explain this answer?
Sodium carbonate cannot be used in place of ammonium carbonate for the identification of the fifth group radicals . This is because the
a)
Sodium ions will interfere in the detection of the fifth group radicals
b)
Concentration of carbonate ions is very low
c)
Sodium will react with acidic radicals
d)
Magnisium will be precipitated
mam if parents have. half the number of chromosome then how much chromosome does child have I have not understand Related: Stages of sexual reproduction?
Related: Stages of sexual reproduction
Shreya Saini answered • 1 hour agoLet the parents have 2n number of chromosomes. Then, they produce gametes by meiosis, that means gametes would have n number of chromosomes because meiosis is a reductional division. After that, by fertilisation, the two male and female gametes fuse to form zygote, i.e. zygote would have (n+n)=2n number of chromosomes. The zygote undergo mitosis, equational division and differentiation to form mat... more
Mohit Saini asked • 7 hours ago Out of the following functions, representing motion of a particle, which represents SHM?
(A) y = sin ωt - cosωt [2011]
(B) y = sin3 ωt(C) 
(D) y = 1 + ωt + ω2t2- a)Only (A)
- b)Only (D) does not represent SHM
- c)Only (A) and (C)
- d)Only (A) and (B)
Correct answer is option 'C'. Can you explain this answer?
Out of the following functions, representing motion of a particle, which represents SHM?
(A) y = sin ωt - cosωt [2011]
(B) y = sin3 ωt
(A) y = sin ωt - cosωt [2011]
(B) y = sin3 ωt
(C)
(D) y = 1 + ωt + ω2t2
a)
Only (A)
b)
Only (D) does not represent SHM
c)
Only (A) and (C)
d)
Only (A) and (B)
The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an AC supply of 20 V, 50 Hz. The secondary will have an output- a)200 V, 50 Hz
- b)2 V, 50 Hz
- c)200 V, 500 Hz
- d)2 V, 5 Hz
Correct answer is option 'A'. Can you explain this answer?
The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an AC supply of 20 V, 50 Hz. The secondary will have an output
a)
200 V, 50 Hz
b)
2 V, 50 Hz
c)
200 V, 500 Hz
d)
2 V, 5 Hz
Shreya Saini answered • 1 hour agoNp=500, Ns=5000, Vp=20V,
Then, Vs/Vp=Ns/Np=5000/500=10. So, Vs=Ns×Vp/Np =20×10=200V.
So, voltage across secondary=200V and the frequency would be same as primary.
So, option a is correct.
Then, Vs/Vp=Ns/Np=5000/500=10. So, Vs=Ns×Vp/Np =20×10=200V.
So, voltage across secondary=200V and the frequency would be same as primary.
So, option a is correct.
Durga Yadav asked • 7 hours agoRead the following statements :
i. In ruminants cellulose digesting bacteria are present in digestive system.
ii. Such digestion by microbial activity is called antagonistic digestion.
iii. Camels and deers are ruminants lacking omasum chamber.- a)only statement i) is correct.
- b)statement i) and iii) are correct.
- c)statementi) and ii) are correct.
- d)all statements are correct.
Correct answer is option 'B'. Can you explain this answer?
Read the following statements :
i. In ruminants cellulose digesting bacteria are present in digestive system.
ii. Such digestion by microbial activity is called antagonistic digestion.
iii. Camels and deers are ruminants lacking omasum chamber.
i. In ruminants cellulose digesting bacteria are present in digestive system.
ii. Such digestion by microbial activity is called antagonistic digestion.
iii. Camels and deers are ruminants lacking omasum chamber.
a)
only statement i) is correct.
b)
statement i) and iii) are correct.
c)
statementi) and ii) are correct.
d)
all statements are correct.
Is there anyone preparing for neet who has completed their 12th years ago? ! I've been struggling a lot to get qualified in neet, coz I've completed my 12th 10 years ago. Is there any change in syllabus since then?? And in ne... more
Meenakshi B Pillai answered • 5 hours agoAll the very best and work hard for it. you have enough time to study. focus on it. Definitely you are gonna crack neet
if you need any help you can personally msg me I am also preparing for neet
if you need any help you can personally msg me I am also preparing for neet
A point performs simple harmonic oscillation of period T and the equation of motion is given by x = a sin (ωt + π/6). After the elapse of what fraction of the time period the velocity of the point will be equal to half of its maximum velocity?- a)T/8
- b)T/6 [2008]
- c)T/3
- d)T/12
Correct answer is option 'D'. Can you explain this answer?
A point performs simple harmonic oscillation of period T and the equation of motion is given by x = a sin (ωt + π/6). After the elapse of what fraction of the time period the velocity of the point will be equal to half of its maximum velocity?
a)
T/8
b)
T/6 [2008]
c)
T/3
d)
T/12
Jaspreet Banger answered • 6 hours ago
A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be: [2009]- a) Mg/k
- b)4 Mg/k
- c)Mg/2k
- d)2 Mg/k
Correct answer is option 'D'. Can you explain this answer?
A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be: [2009]
a)
Mg/k
b)
4 Mg/k
c)
Mg/2k
d)
2 Mg/k
Jaspreet Banger answered • 6 hours ago
Manas Goel asked • 8 hours agoWhich one of the following is categorised as a parasite in true sense ?[2011]- a)The female Anopheles bites and sucks blood from humans
- b)Human foetus developing inside the uterus draws nourishment from the mother
- c)Head louse living on the human scalp as well as laying eggs on human hair
- d)The cuckoo (koel) lays its eggs in crow’s nest.
Correct answer is option 'C'. Can you explain this answer?
Which one of the following is categorised as a parasite in true sense ?
[2011]
a)
The female Anopheles bites and sucks blood from humans
b)
Human foetus developing inside the uterus draws nourishment from the mother
c)
Head louse living on the human scalp as well as laying eggs on human hair
d)
The cuckoo (koel) lays its eggs in crow’s nest.
The particle executing simple harmonic motion has a kinetic energy K0 cos2ωt . The maximum values of the potential energy and the total energy are respectively [2007]- a)K0/2 and K0
- b)K0 and 2K0
- c)K0 and K0
- d)0 and 2K0.
Correct answer is option 'C'. Can you explain this answer?
The particle executing simple harmonic motion has a kinetic energy K0 cos2ωt . The maximum values of the potential energy and the total energy are respectively [2007]
a)
K0/2 and K0
b)
K0 and 2K0
c)
K0 and K0
d)
0 and 2K0.
Jaspreet Banger answered • 7 hours ago
Murti Devi asked • 8 hours agoThe diagram below summarises the stages involved in respiratory metabolism of mammalian skeletal muscle.
Stage 4 in the diagram occurs in mammaliar muscle cells under anaerobic conditions. Why is stage 4 necessary?- a)To detoxifying, pyruvate
- b)To form lactate which is immediatelyreconvertec to glycogen.
- c)To oxidise the reduced nicotinamide adenine di-nucleotide facilitating stage 2
- d)To reduce the oxidised nicotinamide adenine
Correct answer is option 'D'. Can you explain this answer?
The diagram below summarises the stages involved in respiratory metabolism of mammalian skeletal muscle.
Stage 4 in the diagram occurs in mammaliar muscle cells under anaerobic conditions. Why is stage 4 necessary?
Stage 4 in the diagram occurs in mammaliar muscle cells under anaerobic conditions. Why is stage 4 necessary?
a)
To detoxifying, pyruvate
b)
To form lactate which is immediatelyreconvertec to glycogen.
c)
To oxidise the reduced nicotinamide adenine di-nucleotide facilitating stage 2
d)
To reduce the oxidised nicotinamide adenine
Hemozoin is released into blood during the infection of Plasmodium vivax every___.- a)12 hrs
- b)72 hrs
- c)48 hrs
- d)24 hrs
Correct answer is option 'B'. Can you explain this answer?
Hemozoin is released into blood during the infection of Plasmodium vivax every___.
a)
12 hrs
b)
72 hrs
c)
48 hrs
d)
24 hrs
Shruti Shukla answered • 7 hours agoHemozoin is tha cause of fever and chill during malaria...bcz fever reoccur ever 3 day so we can say that hemozoin is released every 3 days that is 72 hrs
I have some good notes useful for neet how can I upload these to edurev?
Vilas Kumar answered • 7 hours agoI don't know
Can i score 500 in neet if i start today?
Ved Parkash Bishnoi answered • 7 hours agoYes if you study regularly and focus on just Neet
Needed a Test for Alkaptonuria? ?
Needed a Test for Alkaptonuria?
Ved Parkash Bishnoi answered • 7 hours agoAlkaptonuria is a rare autosomal recessive genetic disorder which occur due to mutation in hgd gene ,,, this defect is diagnosed by the urine of suspected person as the urine of the disease person is Black Or brown in this disease
A chemical signal that has both endocrine and neural roles is- a)Cortisol
- b)Melatonin
- c)Calcitonin
- d)Epinephrine
Correct answer is option 'D'. Can you explain this answer?
A chemical signal that has both endocrine and neural roles is
a)
Cortisol
b)
Melatonin
c)
Calcitonin
d)
Epinephrine
Ved Parkash Bishnoi answered • 8 hours agoThe answer of this question is epinephrine because it act as neurotransmitter and also secreted through adrenal medulla during emergency which act as hormone,so it has both role as endocrine and neural
Can you explain the answer of this question belowOne of the following functions is exhibited only by green plants and not by animals.A: Growth<... moreThe answer is b.
Ved Parkash Bishnoi answered • 8 hours ago
As we know that autotrophs are the only organism which are capable to form their oven food due to the presence of pigment contain in chloroplast and the process through which autotroph prepare their own food is known as photosynthesis which is is exclusive feature of plants and not of animals
One of the following functions is exhibited only by green plants and not by animals.
A: Growth<... more
The answer is b.
Ved Parkash Bishnoi answered • 8 hours agoAs we know that autotrophs are the only organism which are capable to form their oven food due to the presence of pigment contain in chloroplast and the process through which autotroph prepare their own food is known as photosynthesis which is is exclusive feature of plants and not of animals
Can you explain the answer of this question below:If a star is moving towards the earth, then the spectrum lines are shifted towards- A:
infra-red
- B:
blue
- C:
green
- D:
red
The answer is b.
infra-red
blue
green
red
Ved Parkash Bishnoi answered • 8 hours agoAs the star move towards the earth its wavelength decreases according to The Doppler Effect so so it is shifted towards blue reason
The crops engineered for glyphosate are resistant/tolerant to:- a)Herbicides
- b)Fungi
- c)Bacteria
- d)Insects
Correct answer is option 'A'. Can you explain this answer?
The crops engineered for glyphosate are resistant/tolerant to:
a)
Herbicides
b)
Fungi
c)
Bacteria
d)
Insects
Ved Parkash Bishnoi answered • 8 hours agoGlyphosate crops are resistance to Herbicide these are the genetically modified crops advantage of this modification is to protect the crop from weedicide
In X-H.Y, X and Y both are electronegative elements then? 1 election density on X will increase and on H will decrease 2 in both electron density will increase 3 in both electron density will decrese 4 election density on X w... more
Ved Parkash Bishnoi answered • 8 hours agoAs we know that electronegative element has tendency to attract lone pair of electrons so electron density on electronegative element will increase ,,, according to question in the question electron density will increase on X and Y while electron density will decrease on H
Needed a Test for biology? Related: Biology Class 11?
Needed a Test for biology?
Related: Biology Class 11
Ambition Arazibagh answered • 8 hours agoWe have some test to improved knowlage
Nuclear envelope is a derivative of :- a)Rough endoplasmic reticulum
- b)Smooth endoplasmic reticulum
- c)Membrane of Golgi complex
- d)Microtubules
Correct answer is option 'B'. Can you explain this answer?
Nuclear envelope is a derivative of :
a)
Rough endoplasmic reticulum
b)
Smooth endoplasmic reticulum
c)
Membrane of Golgi complex
d)
Microtubules
Ved Parkash Bishnoi answered • 8 hours agoAs we know that membrane is made up of lipids, major component of a membrane and smooth endoplasmic reticulum form lipid so nuclear membrane is derivative of smooth endoplasmic reticulum
Red tide is caused bya) Noctilucab) Gymnodiniumc) Gonyaulaxd) All of theseCo... more
Andriya Santhosh answered • 8 hours agoGonyaulax is a red coloured dinoflagellate. poison contained in it cause the red colour of the sea and it also affect the aquatic life.
does the life span of fruit fly is actually 30 years????
Nisha Yadav answered • 9 hours agoLife span of fruit fly is approx. 40-50 days . It's life span is heavily influenced by temperature.
Can(OH)2 H3PO4→CaHPO4 2H20 the equivalent mass of H3PO4 in above reaction A)21 B)27 C)38 D)49 Answer is d Can anyone explain how?
Sai Nikhil answered • 9 hours agoEquivalent mass =molar mass of H3PO4/n-factor
=97/2
=48.5
=49
=97/2
=48.5
=49
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