Chapter 1 Biology Class 11 NEET Questions. We covered all the Chapter 1 Biology Class 11 NEET Questions in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
We have divided the complete NEET syllabus into several small posts on our website for your convenience. You will get their respective links in the related posts section provided below.
Related Posts:
- Principle of Inheritance and Variation MCQ
- Heredity and Variation Class 12
- Respiration in Plants Class 11 NEET Questions
MCQ on Biology for NEET Students
How many phenotypes are produced in the F2 generation of a dihybrid cross of a pea plant?
(A) 2
(B) 3
(C) 4
(D) 6
Option c – 4
The number of ATP and NADPH molecules formed during the Calvin cycle are
(A) 18;12
(B) 6;6
(C) 0;0
(D) 18;18
Option c – 0;0
Identify the CORRECT statement regarding the law of segregation.
(A) It explains that the members of the allelic pair show blending.
(B) It explains that in a pair of dissimilar factors, one of the alleles is not expressed at all.
(C) It explains that two alleles for contrasting characters do not blend but segregate or separate out during gamete formation.
(D) It explains that only one of the parental characters is expressed in a monohybrid cross.
Option c – It explains that two alleles for contrasting characters do not blend but segregate or separate out during gamete formation.
Consider one turn of the Calvin cycle and select the INCORRECT statement.
(A) During the carboxylation step of the Calvin cycle, 2 molecules of 3-PGA are formed.
(B) The reduction step of the Calvin cycle involves the utilization of 2 molecules of ATP for the phosphorylation of 3-PGA.
(C) The reduction step of the Calvin cycle involves the utilization of 2 molecules of NADPH for the reduction of per CO₂ molecule fixed.
(D) The regeneration step of the Calvin cycle requires 3 ATP and 2 NADPH for phosphorylation to form RuBP.
Option d – The regeneration step of the Calvin cycle requires 3 ATP and 2 NADPH for phosphorylation to form RuBP.
Which of the following is NOT true with respect to respiration?
(A) is an energy-liberating process.
(B) Respiration is an enzymatically controlled process.
(C) It involves the breakdown of sugar in a stepwise manner.
(D) In respiration, ATP is formed in one large oxidation reaction.
Option d – In respiration, ATP is formed in one large oxidation reaction.
Human height and skin color is an examples of
(A) Multiple allelism
(B) Polygenic inheritance
(C) Incomplete dominance
(D) Pleiotropy
Option b – Polygenic inheritance
Which of the following is energy yielding reaction in glycolysis?
(A) Glucose to glucose -6- phosphate
(B) Fructose -6- phosphate to Fructose-1, 6- bisphosphate
(C) 2-Phosphoglycerate to phosphoenolpyruvate
(D) Phosphoenolpyruvate to pyruvic acid
Option d – Phosphoenolpyruvate to pyruvic acid
The first stable compound of the C3 pathway is
(A) Triose phosphate
(B) Ribulose-1,5-bisphosphate
(C) 3-Phosphoglycerate
(D) Oxalo Acetic Acid
Option c – 3-Phosphoglycerate
The first and last stages of aerobic respiration are ……… respectively.
(A) Fermentation and Terminal oxidation
(B) Glycolysis and ETS
(C) Oxidative decarboxylation and Krebs’ cycle
(D) Krebs’ cycle and Glycolysis
Option b – Glycolysis and ETS
Complete the given analogy with respect to the number of ATP formed during ETS. One molecule of NADH+H : 3 ATP :: One molecule of FADH₂ : ……..
(A) 4 ATP
(B) 1 ATP
(C) 8 ATP
(D) 2 ATP
Option d – 2 ATP
Select the CORRECT statement with respect to Hatch and Slack pathway.
(A) C4 acid is broken down in bundle sheath cells to release CO₂ and 3-carbon molecules.
(B) The Primary CO₂ acceptor is located in the bundle sheath cell.
(C) Malic acid or aspartic acid is formed in bundle sheath cells.
(D) Hatch and Slack pathway involves only the C4 cycle and not the C3 cycle.
Option a – C4 acid is broken down in bundle sheath cells to release CO₂ and 3-carbon molecules.
The respiratory quotient is the ratio of
(A) Volume of oxygen consumed/Volume of carbon dioxide evolved
(B) Volume of carbon dioxide consumed/Volume of oxygen evolved
(C) Volume of carbon dioxide evolved/Volume of oxygen consumed
(D) Volume of oxygen evolved/Volume of carbon dioxide consumed
Option c – Volume of carbon dioxide evolved/Volume of oxygen consumed
Select the INCORRECT statement with respect to photorespiration.
(A) In C4 plants, photorespiration does not occur. that increases
(B) C4 plants have a mechanism for the concentration of CO₂ in bundle sheath cells
(C) Due to more concentration of CO₂ in bundle sheath cells, RuBisCO functions as an oxygenase.
(D) Photorespiration is considered a wasteful process in C3 plants.
Option c – Due to more concentration of CO₂ in bundle sheath cells, RuBisCO functions as an oxygenase.
Select the INCORRECT statement/s about aerobic respiration. i. It requires pyruvic acid which is a final product of glycolysis. ii. It results in the incomplete oxidation of glucose to carbon dioxide and water. iii. It takes place in the cytosol. iv. It requires oxygen for its function.
(A) i. and iv.
(B) ii, iii. and iv.
(C) ii. and iii.
(D) i. and ii.
Option c – ii. and iii.
Read the given statements with reference to factors affecting the rate of photosynthesis. (i) C3 and C4 plants respond differently to CO₂ concentration. (ii) Increasing atmospheric CO₂ concentration beyond 0.07% can enhance the CO₂ fixation rate. (iii) C3 plants respond to higher temperatures with enhanced photosynthesis while C4 plants have much lower temperature optimum. The correct statement/s is/are
(A) Statement (i) and (iii)
(B) Statement (ii)
(C) Statement (i)
(D) All the given statements are correct
Option c – Statement (i)
Which of the following statement is correct with respect to the process of respiration?
(A) 2 PGAL during glycolysis and none of the PGAL are produced in Krebs’ cycle
(B) 4 PGAL during glycolysis and 4 Pyruvic acids are produced in Krebs’ cycle
(C) 2 Pyruvic acids are produced in Krebs’ cycle and none of the PGAL is produced during glycolysis.
(D) PGAL is not produced during respiratory events.
Option a – 2 PGAL during glycolysis and none of the PGAL are produced in Krebs’ cycle
CO₂ enters the photosynthetic pathway during …….. reaction, which occurs in ………..
(A) light reaction, grana
(B) dark reaction, stroma
(C) photosystem I, thylakoid membrane
(D) photosystem II, grana
Option b – dark reaction, stroma
When fatty acid tripalmitin is used as a respiratory substrate, RQ is
(A) always zero
(B) always less than 1
(C) always more than 1
(D) always 0.2
Option b – always less than 1
Which of the following is INCORRECT in the case of individuals suffering from Turner’s syndrome?
(A) They possess 47 chromosomes instead of 46.
(B) The individuals with this syndrome are phenotypically female.
(C) These individuals have short stature, webbed neck, and low posterior hairline.
(D) These individuals show abnormal sexual development.
Option a – They possess 47 chromosomes instead of 46.
C4 plants differ from C3 plants due to the presence of ( Chapter 1 Biology Class 11 NEET Questions )
(A) kranz anatomy
(B) bundle sheath cells
(C) PEP as primary CO₂ acceptor
(D) all of these
Option d – all of these
Enzyme/s mainly involved in during formation of yogurt is/are
(A) Pyruvic acid dehydrogenase
(B) Alcohol dehydrogenase
(C) Lactate dehydrogenase
(D) both (A) and (C)
Option c – Lactate dehydrogenase
In pea plants, what is the probability of the formation of the ‘Yr’ gamete in a dihybrid cross (YYRR x yyrr)?
(A) 25%
(B) 40%
(C) 50%
(D) 100%
Option a – 25%
We covered all the chapter 1 biology class 11 neet questions above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
