Tag: bio-chemistry

Questions Related to bio-chemistry

A universal hydrogen acceptor in an electron transport system is ___________.

  1. ATP

  2. UDP

  3. NAD

  4. FMN


Correct Option: A

The idea that pH gradients could provide energy for ATP formation in chloroplasts and mitochondria was first proposed by ____________.

  1. Bassham

  2. Hill

  3. Mitchell

  4. Thompson


Correct Option: A

Which of the following step of photosynthesis is not directey involve in ATP synthesis or consumption?

  1. Corboxylation of dark Rection

  2. Reduction of dark reaction

  3. Cyclic photo phosphorylation of light reaction

  4. Regeneration of dark reaction


Correct Option: A

Direct gain of ATP from one mole of glucose during glycolysis or EMP pathaway ____________.

  1. 2 ATP

  2. 6 ATP

  3. 36 ATP

  4. 38 ATP


Correct Option: A

Photosynthetic oxygen producing cells differ from non-oxygen producing cells in that the former.

  1. Produce one ATP whereas the latter produce two

  2. Produce no NADPI-$1$ whereas the latter do

  3. Reduce ferredoxin whereas the latter do not

  4. Contain and use both photo systems I and II


Correct Option: A

Mitochondrial morphology is maintained by balancing the active absorption of water and active secretion by the mitochondrion. Hence mitochondria are likely to swell in the presence of.

  1. ATP

  2. Hypertonic solution

  3. Uncoupling agent

  4. Enzymes catalyst oxidative phosphorylation


Correct Option: A

How many ATP molecules could maximally be generated from on molecule of glucose, if the complete oxidation of one mole of glucose to $C{ O } _{ 2 }$ and $H _{ 2 }O$ yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal ?

  1. $\displaystyle Two$

  2. $\displaystyle Thirty$

  3. $\displaystyle Fifty \ seven$

  4. $\displaystyle One$


Correct Option: A

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to $CO _{2}$ and $H _{2}O$ yields $686\ kcal$ and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is $12\ kcal$?

  1. Two

  2. Thirty

  3. Fifty seven

  4. One


Correct Option: A

Irradiation of a mixture of $NH _3, CH _4, H _2$ and $H _2O$ vapour resulted in the formation of adenine. Such experimental evidence supports Oparin's hypothesis on the origin of life because adenine is found in.

  1. ATP

  2. RNA

  3. DNA

  4. ATP, RNA and DNA


Correct Option: A

The primary reaction in photosynthesis is photochemical and takes place in the chloroplast. It is accomplished by a chain of electron carriers with phosphorylation of ADP to ATP. The actual site for this reaction is?

  1. Intrathylakoid space

  2. Thylakoid membrane

  3. Chloroplast envelope

  4. Stoma


Correct Option: A