Practice free Respiration (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Oxidative phosphorylation is found in (M.P.P.M.T. 1987, 2002)
Oxidative phosphorylation occurs in the mitochondria. It is a part of the electron transport chain where ATP is synthesized as electrons are transferred from electron donors to oxygen through a series of protein complexes.
In Opunita and other succulents, night time R.Q. is (CPMT, 1986)
RQ of protein rich pulses is ‘ (RPMT. 1989)
Connecting link between glycolysis and Krebs cycle is/before entering Krebs cycle pyruvate is changed to (A.F.M.C, 1988; CB.S.E. 1992, 1997; R.PMT. 1992; M.P.P.M.T. 1987, 88, 93, 98, 2001, 2002; AMU. 1987, 2001; J.LPME.R; 1989; C.PMT. 1991, 94; D.P.M.T. 1999; A.UMS. 1994, Mampal 200l, BV. 2002, Kerala 2003, 2004)
The connecting link between glycolysis and the Krebs cycle is Acetyl CoA. After glycolysis, pyruvate is converted into Acetyl CoA before it enters the Krebs cycle. This conversion involves the removal of a carbon atom from pyruvate, releasing it as CO2 and linking the remaining two-carbon molecule to Coenzyme A.
Apparatus to measure rate of respiration and R.Q. is (C.P.M.T. 1991; C.B.S.E. 1992)
A respirometer is an apparatus used to measure the rate of respiration and the Respiratory Quotient (R.Q.). It measures the volume of oxygen consumed and/or the volume of carbon dioxide produced by an organism, which are crucial for determining the rate of respiration and the R.Q.
Terminal cytochrome of respiratory chain which donates electrons to oxygen is (CPMT 1989; CBSE, 1992)
The terminal cytochrome of the respiratory chain which donates electrons to oxygen is Cytochrome a3. This cytochrome is a part of the cytochrome c oxidase complex (Complex IV) in the electron transport chain and is responsible for the final step of electron transfer to oxygen, forming water.
R.Q is maximum when respiratory substrate is (MPPMT. 1992; A.U.M.S. 1992)
Respiratory Quotient (R.Q) is the ratio of the volume of carbon dioxide produced to the volume of oxygen consumed during respiration. For different respiratory substrates, R.Q varies. When malic acid (a type of organic acid) is used as a substrate, it typically shows a higher R.Q value compared to glucose, fats, or proteins. This is because malic acid contains more oxygen in its structure, leading to a higher ratio of CO2 production to O2 consumption.
Krebs cycle is (AMU. 1993)
Most of the biological energy is supplied by mitochondria through (M.P.PMT.1994, AMU. 1998)
Mitochondria are known as the powerhouses of the cell because they generate most of the cell's supply of ATP through the process of oxidative phosphorylation. This process involves the oxidation of TCA (tricarboxylic acid) cycle substrates. The TCA cycle, coupled with the electron transport chain, leads to the production of ATP, which is the main form of biological energy.
Which one is a product of glycolysis, besides 2 ATP ? (CPMT. 1995; M.P.PMT. 1998)
During glycolysis, glucose is broken down into two molecules of pyruvate. In this process, 2 molecules of ATP and 2 molecules of NADH are produced. NADH is generated when glyceraldehyde-3-phosphate is converted to 1,3-bisphosphoglycerate. Therefore, besides ATP, NADH is a product of glycolysis.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Respiration question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.