EAMCET Model Questions

Following are model questions from the topic Cell Biology and Internal Organisation of Plants for EAMCET Medical and NEET – UG Examinations. The model questions are from Botany.

1. Arrange the following which are not applicable but related to virus, Dujardin, Robert Brown and Virchow respectively.
A) Nucleoid B) Structural Unit of Organisms C) Cell Theory D) Active Centre for various biological processes.
1) ADCB 2) CDAB 3) CDBA D) BCAD

2. Many cells function properly and divide mitotically meiotically even though they do not have the following
A) Cytoskeleton B) Mitochondria C) Plasma membrane D) Plastids

3. Arrange the following in ascending order basing on their measurements (width)
A) Solenoid B) DNA C) Chromatid D) Nucleosome
1) ABCD 2) BDAC 3) BADC 4) DCAB

4. Chromosomes of Eukaryotic Organisms showing sexual reproduction obtain maximum stability in the following of mitosis.
1) Prophase 2) Metaphase 3) Anaphase 4) Telophase

5. Phospho diester bond in the poly nucleotide chain of DNA or RNA of Eukaryotic or Prokaryotic Organisms is present between
1) Carbon of the Pentose sugar and Oxygen atom of Phosphate
2) Oxygen of Pentose sugar and Phosphorous of Phosphate
3) Carbon of the Pentose sugar and Nitrogen of Purine
4) Oxygen molecule of Phosphate and carbon of Pentose sugar

6. Central dogma of Molecular Biology, Proposed by F.H.C. Crick states that the flow of Genetic Information is as follows.
1) DNA ® Protein 2) DNA ® m-RNA 3) DNA ® m-RNA ® Protein 4) mRNA ® Protein

7. Assertion (A): DNA is also called chemical basis of heredity.
Reason (R): Hershy and Chase showed that DNA is the sole carrier of genetic information from parent to offspring.
1) (A) and (R) are correct. (R) explains (A)
2) (A) and (R) are correct. (R) do not explains (A).
3) (A) is correct. (R) is false.
4) (A) is false. (R) is correct.

8. Assertion (A): Chromosomes do not bend in the region of secondary contriction during anaphase.
Reason(R): Spindle fibres bind with secondary constriction and do not allow it to bend.

9. Match the following:
List I – List II
A. Growth division I. Synapsis
B. Nucleolus is II. Crossing over larger stage
C. Long-lasting stage III. Walter Flemming
D. Zipper like fashion IV. Zygonema
I II III IV I II III IV
1) A D C B 2) B C D A 3) C B A D 4) D C A B

10. Select a wrong statement from the following.
1) The repeating units of organic polymers of nucleic acids are called nucleotides.
2) Maximum number of nucleotides in short-living RNA may be more than 2000.
3) Chloroplast consists DNA and RNA.
4) Terminalisation starts in Diplonema

11. One of the following is not a soft fibre
1) Musa 2) Ramie 3) Linum 4) Hemp

12. Select a mis-match from the following pairs.
1) Sieve plate – Biconvex
2) Companion cells – Rectangular
3) Phloem fibres – Spindle shaped
4) Xylem parenchyma – Round or Oval Cells

13. Match the following
List I – List II
A. Cellwall with water I. Rolling and unrolling of the leaf
B. Cells storing water II. Protoxylem
C. Tissue secretes III. Living mechanical water tissue
D. Lysigenous cavity IV. Guttation storing water

KEY: 1)2 2)4 3)2 4)2 5)1 6)3 7)1 8)3 9)4 10)4 11)1 12)4 13) 2

1. Find degenerate sets of codons from the following
I. UAA, UAG, UGA II. AUC, ACU, AUG, AUU III. UCU, AGU, UCG IV. AUG, UUU, GGG, UCU V. UCC, UCA, AGC

1) I, IV 2) III, V 3) I, V 4) II, V

2. Total number of energetic, electron pairs which are generated from Glycolysis and Krebs cycle for a Glucose molecule in aerobic respiration
1) 24 2) 12 3) 8 4) 10

3. The enzyme present in every prokaryote is
1) Aldolase 2) Dinitrogenase
3) Nitrate reductase 4) ATP synthase

4. Antisense strand of DNA measuring 1009.8Ao is transcribed. m-RNA that left the nucleus could carry a message for producing a protein with 90 peptide bonds. So how many triplets nucleotides are cut from m-RNA during sizing.
1) 8 2) 6 3) 7 4) 9

5. 29 t-RNAs brought their specific amino acids to the same site on ribosome one after the other. So how many peptide bonds are present in the protein and find out the length of m-RNA carrying message for it.
1) 29, 316.2Ao 2) 30,306.2Ao 3) 28, 306.2Ao 4) 28,316.2Ao

6. Number of H+ accumulated in the inter membrane space of mitochondria from all the reduced coenzymes in Electron Transport System during quinone cycles for a glucose in aerobic respiration.
1) 56 2) 80 3) 48 4) 104

7. A set of enzymes namely Epimerase (K), his phosphotase (L), Isomerase (M) and kinase (N) are choosen from the enzymes participating in, calvin cycle. Find out their suitable substrates in ascending order from the following
C. Fructose – 1, 6 – bisphosphate
D. Xilulose – 5 – phosphate
E. 3 – phosphoglyceric acid
F. Glyceraldehyde – 3 – phosphate

1) LF, KC, ND, ME 2) NE, LC, MF, KD 3) MF, KE, NC, LD 4) NC, KF, MD, LE

8. Vinegar is obtained from
1) Clostridium 2) Acetobacter
3) E. coli 4) Lactobacillus

9. Arrange the following factors of photosynthesis in ascending order basing on their necessity.
A. CO2 B. H2O C. Sunlight D. RuBP E. Chlorophyll F. NADP
1) E C B F A D 2) C E B F A D 3) A C E D F B 4) E B C F D A

10. The major electron carrier in reductive photosynthesis
1) Plastosemiquinone 2) Plastocyanin 3) NADP 4) Cytb – Cytf Complex

11. A protein that acts on other protein
1) Complex I 2) Amylase 3) Aldolase 4) Pepsin

12. The hormone that changes the direction of the growth of stem is
1) Ethylene 2) Gibberellins 3) Cytokinins 4) ABA ABA

13. Molybdenum, a micro element is a part of the following and help in Nitrogen uptake and Nitrogen fixation
1) Nitrate reductase 2) Dinitrogenase 3) 1 and 2 4) Dinitrogenase Catalase

14. Water absorbed by the root hair, moves through cortical cells and finally enters into Xylem through
1) Apoplast movement 2) Symplast movements 3) 1 and 2 4) Vacuolar Pathway

15. The rhamboidal structures in Cycas are
1) Scale leaves, Microsporophylls 2) Leafbases, Megasporophylls
3) Microsporophylls, Leafbases 4) Microsporophylls, Megasporophylls

16. Pickout incorrect statement from the following

1) Though all arechegonia in Pteris prothallus are fertilised, only one embryo develops from one prothallus
2) Microsporophylls of Cycas and prothallus of Pteris produce their respective reproductive structures on the same side.
3) Rhizopus do not produces Zygote in its life cycle.
4) Half of the peristomial teeth in Funaria show lignin thickenings

17. Gametophore in Funaria is formed earliest from the following
1) Tubers 2) Protonema
3) Gemmae 4) Secondary Protonema

18. Mitosis is seen through out the life cycle of Spirogyra if it do not forms
1) Akinetes 2) Aplanospore 3) Zygospore 4) Akinete, Aplanospore, fragmentation

19. Anton van Leeuwenhock developed simple microscope that could magnify the objects upto how many times
1) 100 2) 200 3) 300 4) 1000

KEY: 1)2 2)4 3)1 4)3 5)1 6)3 7)2 8)2 9)1 10)3 11)4 12)1 13)3 14)3 15)2 16)1 17)3 18)3 19)3