MCQOPTIONS
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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.
| 5251. |
Single membrane bounded organelle is |
| A. | nucleus |
| B. | lysosome |
| C. | ribosome |
| D. | none of these |
| Answer» C. ribosome | |
| 5252. |
Plants having foreign DNA are known as |
| A. | genetic plants |
| B. | recombinant plants |
| C. | cultured plants |
| D. | transgenic plants |
| Answer» E. | |
| 5253. |
Environment is a source of |
| A. | food |
| B. | shelter |
| C. | clothing |
| D. | all of these |
| Answer» E. | |
| 5254. |
The chromosome is |
| A. | gene |
| B. | genes + protein |
| C. | DNA + genes |
| D. | gene + protein |
| Answer» C. DNA + genes | |
| 5255. |
In RNA nucleotides are attached by |
| A. | peptide bonds |
| B. | hydrogen bonds |
| C. | covalent bond |
| D. | phosphodiester bond |
| Answer» E. | |
| 5256. |
The human body contains water |
| A. | food |
| B. | 70-90% |
| C. | 75-95% |
| D. | 80-90% |
| Answer» C. 75-95% | |
| 5257. |
Starch is richly present in |
| A. | onion |
| B. | apple |
| C. | cereals |
| D. | tomato |
| Answer» D. tomato | |
| 5258. |
In birds the sex is determined by the type of |
| A. | sperm |
| B. | autosomes |
| C. | egg |
| D. | none of these |
| Answer» D. none of these | |
| 5259. |
In cystic fibrosis, the patient lacks a gene that codes for trans-membarene carrier of |
| A. | sodium ion |
| B. | carbon dioxide |
| C. | chloride ion |
| D. | potassium ion |
| Answer» D. potassium ion | |
| 5260. |
Which gene is located on linkage group number 11 in man |
| A. | sickle cell anemia |
| B. | leukemia |
| C. | albinism |
| D. | all of these |
| Answer» E. | |
| 5261. |
Recombinant DNA is introduced in to host cell by means of |
| A. | phage |
| B. | vector |
| C. | bacteria |
| D. | enzyme |
| Answer» C. bacteria | |
| 5262. |
Platyhelminthes means |
| A. | dipnoi |
| B. | flat worms |
| C. | tape worms |
| D. | pin worms |
| Answer» C. tape worms | |
| 5263. |
Protists have been evolved from |
| A. | animals |
| B. | plants |
| C. | fungi |
| D. | prokaryotes |
| Answer» E. | |
| 5264. |
Fungi can absorb food from the substrate because the have |
| A. | sporangium |
| B. | spores |
| C. | rhizoids |
| D. | stalk |
| Answer» D. stalk | |
| 5265. |
Algae differ from plants in that the sex organs in algae are |
| A. | multicellular |
| B. | unicellular |
| C. | acellular |
| D. | none of these |
| Answer» C. acellular | |
| 5266. |
Cassia fistula is the scientific name of |
| A. | amaltas |
| B. | rose |
| C. | onion |
| D. | tomato |
| Answer» B. rose | |
| 5267. |
Phage virus consists of head and |
| A. | thorax |
| B. | neck |
| C. | tail |
| D. | none of these |
| Answer» D. none of these | |
| 5268. |
Cilia are produced from |
| A. | T.B |
| B. | cell-membrane |
| C. | centriole |
| D. | cytoplasm |
| Answer» D. cytoplasm | |
| 5269. |
Bacteria without any flagella are called |
| A. | monotrichous |
| B. | atrichous |
| C. | peritrichous |
| D. | lophotrichous |
| Answer» C. peritrichous | |
| 5270. |
All enzymes are protein which are |
| A. | globular |
| B. | fibrous |
| C. | helical |
| D. | all of these |
| Answer» B. fibrous | |
| 5271. |
The simplest fatty acid is |
| A. | palmitic acid |
| B. | butyric acid |
| C. | oleic acid |
| D. | acetic acid |
| Answer» E. | |
| 5272. |
Male reproductive part of flower is |
| A. | stigma |
| B. | stamen |
| C. | carpel |
| D. | ovule |
| Answer» C. carpel | |
| 5273. |
Coordination in plants is by |
| A. | nervous system |
| B. | enzymes |
| C. | hormones |
| D. | roots |
| Answer» D. roots | |
| 5274. |
Which one is abundant in lymph |
| A. | oxygen |
| B. | lipids |
| C. | water |
| D. | proteins |
| Answer» E. | |
| 5275. |
Jaws without teeth are found in found in |
| A. | birds |
| B. | reptiles |
| C. | fish |
| D. | none of these |
| Answer» B. reptiles | |
| 5276. |
Operculum is present in |
| A. | birds |
| B. | sea fish |
| C. | cartilaginous fish |
| D. | none of these |
| Answer» B. sea fish | |
| 5277. |
In which animal respiratory surface are found in more than one organ |
| A. | pleura |
| B. | human |
| C. | fish |
| D. | frog |
| Answer» E. | |
| 5278. |
Enzyme present in the saliva is |
| A. | lipase |
| B. | trypsin |
| C. | ptyalin |
| D. | invertase |
| Answer» D. invertase | |
| 5279. |
The mechanism for ATP synthesis is |
| A. | chemosynthesis |
| B. | photosynthesis |
| C. | phosphorylation |
| D. | chemiosmosis |
| Answer» E. | |
| 5280. |
Nitrogen is present in |
| A. | carbohydrates |
| B. | proteins |
| C. | lipids |
| D. | carbonates |
| Answer» C. lipids | |
| 5281. |
The food is ground in the cockroach in |
| A. | mesenteron |
| B. | crop |
| C. | gizzard |
| D. | intestine |
| Answer» D. intestine | |
| 5282. |
True roots absent in |
| A. | ferns |
| B. | bryophytes |
| C. | gymnosperms |
| D. | angiosperms |
| Answer» C. gymnosperms | |
| 5283. |
Pigment present in red algae is |
| A. | photosynthetic |
| B. | phycocyanin |
| C. | phycoerythrin |
| D. | bilirubin |
| Answer» D. bilirubin | |
| 5284. |
Which is a parasitic plant |
| A. | cuscuta |
| B. | rose |
| C. | ferns |
| D. | mosses |
| Answer» B. rose | |
| 5285. |
Smallest disease causing agents in plants are |
| A. | virion |
| B. | mycoplasma |
| C. | viroids |
| D. | prions |
| Answer» D. prions | |
| 5286. |
The major cell infected by the HIV is lymphocyte |
| A. | fucoxanthin |
| B. | B |
| C. | both T and B |
| D. | none of these |
| Answer» B. B | |
| 5287. |
Number of chromosomes in E.coli |
| A. | 4 |
| B. | 6 |
| C. | 3 |
| D. | 1 |
| Answer» E. | |
| 5288. |
Co-enzyme is often formed from |
| A. | lipid |
| B. | protein |
| C. | inorganic ion |
| D. | vitamin |
| Answer» C. inorganic ion | |
| 5289. |
Messenger RNA is formed in |
| A. | nucleus |
| B. | chloroplast |
| C. | mitochondria |
| D. | none of these |
| Answer» B. chloroplast | |
| 5290. |
Protein factory is |
| A. | nucleus |
| B. | ribosome |
| C. | golgi complex |
| D. | centriole |
| Answer» C. golgi complex | |
| 5291. |
Sodium ions arepumpedfrom a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of |
| A. | hydrolysis |
| B. | passive transport |
| C. | osmosis |
| D. | active transport |
| Answer» E. | |
| 5292. |
Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the |
| A. | concentration of water molecules inside and outside the cell |
| B. | concentration of enzymes on either side of the cell membrane |
| C. | rate of molecular motion on either side of the cell membrane |
| D. | none of these |
| Answer» B. concentration of enzymes on either side of the cell membrane | |
| 5293. |
Proteins are made from amino acids by the process of |
| A. | water |
| B. | pinocytosis |
| C. | dehydration synthesis |
| D. | active transport |
| Answer» D. active transport | |
| 5294. |
Starch is converted into maltose by |
| A. | diastase |
| B. | invertase |
| C. | maltase |
| D. | amylase |
| Answer» B. invertase | |
| 5295. |
The evaporative cooling in the respiratory tract of dogs is called |
| A. | vasodilation |
| B. | vasoconstriction |
| C. | panting |
| D. | all of these |
| Answer» D. all of these | |
| 5296. |
Production of sweat and sebum is related with |
| A. | skin |
| B. | liver |
| C. | lungs |
| D. | GIT |
| Answer» B. liver | |
| 5297. |
Which of the following pathogen type cause disease that can be treated with antibiotics |
| A. | bacteria |
| B. | fungi |
| C. | virus |
| D. | none of these |
| Answer» B. fungi | |
| 5298. |
Most cell membranes are composed principally of |
| A. | DNA and protein |
| B. | protein and lipids |
| C. | protein and chitin |
| D. | protein and RNA |
| Answer» C. protein and chitin | |
| 5299. |
Haemodialysis means cleaning of |
| A. | urine |
| B. | blood |
| C. | glomerular filterate |
| D. | coelomic fluid |
| Answer» C. glomerular filterate | |
| 5300. |
About __________ of the body weight of a mammal is water. |
| A. | 0.6 |
| B. | 0.65 |
| C. | 0.7 |
| D. | 0.75 |
| Answer» D. 0.75 | |