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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 2251. |
Both respiration and photosynthesis require (M.P.PM.T. 1989,1993,1996; CPM.T, 1984, 1988, 1989,-B.H.U. 1995;A.FMC 1995) |
| A. | Sunlight |
| B. | Chlorophyll |
| C. | Glucose |
| D. | Cytochromes |
| Answer» E. | |
| 2252. |
In plants energy is produced during the process of (CPMT 1981) |
| A. | Photosynthesi |
| B. | Transpiration |
| C. | Respiration |
| D. | Water absorption |
| Answer» D. Water absorption | |
| 2253. |
Final electron acceptor in respiration is (B.H.U. 1984, Karnataka 1994; A.F.M.C. 1998, A.M.U. 2001) |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Cytochromes |
| D. | Dehydrogenases |
| Answer» C. Cytochromes | |
| 2254. |
Anaerobic respiration is (CPMT. 1987) |
| A. | Extramolecular respiration |
| B. | Molecular respiration |
| C. | Inter-molecular respiration |
| D. | Intra-molecular respiration. |
| Answer» E. | |
| 2255. |
Which of the following process is used in the conversion of pyruvate to acetyl CoA ?(D.PM.T. 1987; C.PMT 1990, Kerala 2004) |
| A. | Oxidative decarboxylation |
| B. | Oxidative dehydrogenation |
| C. | Oxidative dehydration |
| D. | Oxidative phosphorylation |
| Answer» B. Oxidative dehydrogenation | |
| 2256. |
Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzyme (AMU. 1986) |
| A. | Decarboxylase |
| B. | Dehydrogenase |
| C. | Decarboxylase and dehydrogenase |
| D. | Phosphotase |
| Answer» D. Phosphotase | |
| 2257. |
Maximum number of ATP is synthcsised during oxidation of (R.PM.T. 1990) |
| A. | β - amino acid |
| B. | Malic acid |
| C. | Palmitic acid |
| D. | Glucose |
| Answer» D. Glucose | |
| 2258. |
Oxidative phosphorylation is found in (M.P.P.M.T. 1987, 2002) |
| A. | Chloroplast |
| B. | Leucoplasts |
| C. | Peroxisomes |
| D. | Mitochondria |
| Answer» E. | |
| 2259. |
The universal hydrogen acceptor is ‘ (C.P.M.T. 1980) |
| A. | NAD |
| B. | ATP |
| C. | CoA |
| D. | FMN |
| Answer» B. ATP | |
| 2260. |
Respiration is found in (B.H.V. 1980) |
| A. | In all living cells in light |
| B. | All living cells in dark |
| C. | In all living cells both in light and dark |
| D. | Only in nongreen cells both in light and dark |
| Answer» D. Only in nongreen cells both in light and dark | |
| 2261. |
Total gain of energy in anaerobic respiration from one glucose molecule is (CPMT. 1987) |
| A. | Two ATP |
| B. | One ATP |
| C. | Four ATP |
| D. | Three ATP |
| Answer» B. One ATP | |
| 2262. |
In an organism utilising carbohydrates as its source of energy anaerobically, the R.Q. is likely (UPMER 1983) |
| A. | 0.7 |
| B. | 0.9 |
| C. | l.0 |
| D. | Infinity. |
| Answer» E. | |
| 2263. |
In respiration pyruvic acid is (MPPMT. 1986, 1988) |
| A. | Formed only when oxygen is available |
| B. | One of the products of Krebs cycle |
| C. | Broken down into a two carbon fragment and CO2 |
| D. | A result of protlipid breakdown. |
| Answer» D. A result of protlipid breakdown. | |
| 2264. |
RQ for fatty substance/fat is (DPMT 1985; Karnataka 1999) |
| A. | Infinity |
| B. | Less than one |
| C. | Greater than one |
| D. | Zero |
| Answer» C. Greater than one | |
| 2265. |
Net gain of ATP in glycolysis _______ (M.P.PMT. 1988; D.P.M.T. 1983, Pb. PMT. 2000, CPM.T. 2001) |
| A. | 6 |
| B. | 2 |
| C. | 4 |
| D. | 8 |
| Answer» E. | |
| 2266. |
During ATP synthesis electrons pass through (B.H.U.1980) |
| A. | H2O |
| B. | Cytochromes |
| C. | CO2 |
| D. | O2 |
| Answer» C. CO2 | |
| 2267. |
What is called Griffith effect ? |
| A. | DNA transcription |
| B. | RNA translation |
| C. | Bacterial transformation |
| D. | Bacterial transduction |
| Answer» D. Bacterial transduction | |
| 2268. |
The information from RNA to DNA are transfered by which process |
| A. | Replication |
| B. | Transcription |
| C. | Translation |
| D. | Reverse transcription |
| Answer» E. | |
| 2269. |
A Codon is made up of |
| A. | Single nucleotide |
| B. | two nucleotides |
| C. | three nucleotides |
| D. | Four nucleotides |
| Answer» D. Four nucleotides | |
| 2270. |
Make proper pairs. |
| A. | ( P-iv ) ( Q -iii) (R- i) ( S - ii) |
| B. | ( P-ii) ( Q -i) ( R- iiv) ( S - iii) |
| C. | ( P-iii) ( Q -iv) (R- ii) ( S - i) |
| D. | ( P-ii) ( Q -i) (R- iv ) ( S - iii) |
| Answer» D. ( P-ii) ( Q -i) (R- iv ) ( S - iii) | |
| 2271. |
By which bonds the purine & pyrimidine pairs of Complementary Strands of DNA held together? |
| A. | H - bonds |
| B. | O - bonds |
| C. | C - bonds |
| D. | N - bonds |
| Answer» B. O - bonds | |
| 2272. |
Genetic information are transfered from nucleus to cytoplasm of cell through |
| A. | DNA |
| B. | RNA |
| C. | Lysosomes |
| D. | Anticodon |
| Answer» C. Lysosomes | |
| 2273. |
Who supported Griffith effect by molecular explanation ? |
| A. | Hershay and chase |
| B. | Watson, crick Ninenberg |
| C. | Avery , Mc Carty and Macleod |
| D. | Griffith and Avery |
| Answer» D. Griffith and Avery | |
| 2274. |
Name the conjugated protein used as genetic material in living cells |
| A. | Glyco protein |
| B. | Nucleo protein |
| C. | Metallo protein |
| D. | Lip oprotein |
| Answer» C. Metallo protein | |
| 2275. |
Which is the smallest RNA ? |
| A. | r RNA |
| B. | m RNA |
| C. | t - RNA |
| D. | nuclear RNA |
| Answer» D. nuclear RNA | |
| 2276. |
Nucleus of a cell is the site of Synthesis of |
| A. | DNA |
| B. | m - RNA |
| C. | t - RNA |
| D. | All |
| Answer» E. | |
| 2277. |
Multiplication of DNA is called |
| A. | Translation |
| B. | Replication |
| C. | Transduction |
| D. | Transcription |
| Answer» C. Transduction | |
| 2278. |
Antiparallel strand in DNA is due to |
| A. | Disulphide linkage |
| B. | Hydorgen bond |
| C. | Phosphodiester bond |
| D. | Ionic bond |
| Answer» D. Ionic bond | |
| 2279. |
The enzyme involved in transcription is |
| A. | RNA polymerase |
| B. | DNA polymerase I |
| C. | DNA polymerase II |
| D. | DNA polymerase III |
| Answer» B. DNA polymerase I | |
| 2280. |
In a transcription unit promotor is said to be located towards |
| A. | 31 end of structural gene |
| B. | 51 end of structural gene |
| C. | 51 end of template strand |
| D. | 31 end of template strand |
| Answer» E. | |
| 2281. |
State the nature of the 2 Strands of DNA duplex. |
| A. | identical & Complementary |
| B. | Anti parallel & complementary |
| C. | Disimilar & non - complementary |
| D. | Anti parallel & Non - complementary |
| Answer» C. Disimilar & non - complementary | |
| 2282. |
Synthesis of nucleic acids always takes place in |
| A. | 31 - 51 dicectioon |
| B. | 51 - 31 direction |
| C. | Both ways |
| D. | in any direction |
| Answer» C. Both ways | |
| 2283. |
Which of the following is used in DNA multiplication? |
| A. | RNA polymerase |
| B. | DNA endonuclease |
| C. | DNA exonuclease |
| D. | DNA Polymerase |
| Answer» E. | |
| 2284. |
Enzymes needed for formation of repliction fork |
| A. | RNA polymerase and DNA polymerase I |
| B. | Helicase and gyrase |
| C. | Hexokinase and aldolase |
| D. | Ligase and endo nuclease |
| Answer» C. Hexokinase and aldolase | |
| 2285. |
DNA replication requires |
| A. | DNA polymerase only |
| B. | DNA polymerase and ligase |
| C. | Ligase only |
| D. | RNA polymerase |
| Answer» C. Ligase only | |
| 2286. |
The code AUG stands for |
| A. | Glycine |
| B. | Methionine |
| C. | N-formyl methionine |
| D. | A lanine |
| Answer» C. N-formyl methionine | |
| 2287. |
DNA molecule has uniform diameter due to ? |
| A. | Double stranded |
| B. | Presence of phosphate |
| C. | Specific base pairing between purine and pyrimidine |
| D. | Specific base pairing between purine and purine |
| Answer» D. Specific base pairing between purine and purine | |
| 2288. |
Okazaki fragments are Synthesized on |
| A. | Leading strands of DNA only |
| B. | Lagging Strands of DNA only |
| C. | Leading and LaggingStrands |
| D. | Complementary DNA Strand |
| Answer» C. Leading and LaggingStrands | |
| 2289. |
t - RNA attaches aminoacid at its |
| A. | 31 end |
| B. | 51 end |
| C. | Anticodon |
| D. | Loop |
| Answer» B. 51 end | |
| 2290. |
DNA acts as a template for synthesis of |
| A. | RNA |
| B. | DNA |
| C. | Both ‘a’ and ‘b’ |
| D. | Protein |
| Answer» D. Protein | |
| 2291. |
Which segments joint to form a genital pouch in female Cockroach ? |
| A. | Seventh and Eighth |
| B. | Nineth and Tenth |
| C. | Eighth and Nineth |
| D. | Sixth and Seventh |
| Answer» D. Sixth and Seventh | |
| 2292. |
Each walking leg of periplaneta is made up of ..........segments. |
| A. | five |
| B. | four |
| C. | six |
| D. | nine |
| Answer» B. four | |
| 2293. |
In Cockroach which tergum possesses a median groove ? |
| A. | Tenth |
| B. | First |
| C. | Ninenth |
| D. | Third |
| Answer» B. First | |
| 2294. |
Howmany segment are present in an abdomen of the Cockroach ? |
| A. | Eight |
| B. | Ten |
| C. | Seven |
| D. | Nine |
| Answer» C. Seven | |
| 2295. |
Why head of the Cockroach can move easily in all the directions ? |
| A. | In Cockroach head and thorax fuse to form Cephalothorax. |
| B. | Anatomy of mouthpart, are so arranged that head can move easily in all the directions. |
| C. | Head is attached to thorax through a flexible neck. |
| D. | Abdomen of Cockroach is made of three segments. |
| Answer» B. Anatomy of mouthpart, are so arranged that head can move easily in all the directions. | |
| 2296. |
What is the name of second segment of walking leg of Cockroach ? |
| A. | Coxa |
| B. | Femur |
| C. | Tarsus |
| D. | Trochanter |
| Answer» E. | |
| 2297. |
Which structure is sound receptor in Cockroach ? |
| A. | Tarsu |
| B. | Anal cerci |
| C. | Compound eye |
| D. | Walking leg |
| Answer» C. Compound eye | |
| 2298. |
On the head region of Cockroach .......... pairs of .......... and .......... shaped eyes occur. |
| A. | One pair, sessile compound and kidney shaped |
| B. | Two pairs, stalked compound and round shaped |
| C. | Many pairs, sessile simple and kidney shaped |
| D. | Many pairs, stalked compound and kidney shaped |
| Answer» B. Two pairs, stalked compound and round shaped | |
| 2299. |
Which is the peculiarity of ninenth sternum of maleCockroach ? |
| A. | Anus occurs under it |
| B. | A piar of anal cerci is associated with it |
| C. | Seventh and Eighth sternum are covered with it |
| D. | Male genital openings occurs there |
| Answer» C. Seventh and Eighth sternum are covered with it | |
| 2300. |
In case of common species of Cockroach, Morphologically which statement is correct ? |
| A. | The size of female is slightly bigger than male. |
| B. | In both male and female, numbers of abdominal segments are different. |
| C. | The size of male and female are equal. |
| D. | The size of male is slightly bigger than female. |
| Answer» E. | |