Lecture Exam 18Biol102 Fall18 Multiple Choice: Each Question 2 marks 1. Resoluti

Question

Lecture Exam 18Biol102 Fall18 Multiple Choice: Each Question 2 marks 1. Resolution power of electron microscope is A) 0.2um 8)0.2mm Q02mm Dj 2.0cm 2. Deoxyribose lose O at AjC B)G G D 3. Cell membrane is fluid due to movement of A) cholesteral 8) protein phospholipid Di eycolipid 4. Plant cells placed in 1.2% NsO soktion A) faccid B)turgid gplnndynd 5. Number of covalent bonds formed by nitrogen is Aus) 293 014 s 6. Aquaporins are A) holes in phospholipid bilayer 8) channel protein Qcarier protein D) none of thee 7. The control of solute concentrations and water balance in Paramecium is A) osmoregulation B) plasmolysis osmosis D) all of these The diffusion of ions across a membrane is along A) electrical gradient B) concentration gradient Q electrochemical Small channels between plant cells 8. Fadem g denion, -of thee 9. 10. Cell-cell recognition is due tomolecule in cell membrane 11 Small part of enzyme comes in direct contact with substrate 12·B-Pleated represents-_structure in proteins 13. ARBC placed in 1.2% Nad solution A) same size B) get bigger qshrinks D) allOf these 14. No membrane bound organelle assembles ribosomal units A) gap junction B) stomata ent. A) cholesterol B) protein C)phospholipid D) branched sugar chain A) active site B) allosteric site C) inhibition site D) activation site A) primaryB) secondary tertiary D) none of these 15. DNA coiled around 8 histones forms unit A) chromatin 8) chromatid nucleosome D) chromosome 16. Unique N-base present in RNA is A) uracil Bjcytosine C) thymine D) adenine 17. Alcohols and acids are joined by- bond A) peptide B) slycosidic ester D) diester 18. Cellulose is a polymer of A)aelucose B) ßglucose 9amino acids acety glucosanne 19. Motor proteins move vesicles on A) microtubule 8) intermediate flament C) microfiliament DI ail of these 20. The arrangement of microtubules in eukaryotic flagella is A) 9+2 B)9+3 C)9+0 D) no microtubules

Explanation / Answer

1) B. 0.2 nm

2) B. C2

3) C. Phopholipids

4) C. PLasmolysed

5) D. 4 Covalent bonds

6) B. Channel protein

7) A. Osmoregulation

8) B. Concentration gradient

9) D. Plasmodesmata

10) B. Protein

11) A. Active site

12) B. Secondary structure of protein

13) C. Shrinks

14) C. Nucleolus

15) C. Nucleosome

16) A. Uracil

17)  A. Peptide bond

18) B. Beta glucose

19) A. Microtubules

20) A. (9+2)

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