Biology 301-350 MCQs

Biology

301. Which of the following statement is incorrect about Glyoxisomes?

a. They contain enzymes which help in conversion of fatty acids into carbohydrate

b. They are abundant in soybeans but absent in pea

c. They are present through out life of a plant and provide them with energy through Glyoxylate cycle

d. They are single membranous organelles

302. Ribosomes + m-RNA?

a. Polysome

b. Phlosome

c. Polosome

d. None of these

303. Which of the following impart a red colour to Rose petals?

a. Chloroplast

b. Chlorophyll

c. Chromoplast

d. Leucoplast

304. During digesting the phagocytosed food particles vesicles formed from fusion of phagocytic vacuole with the enzymes secreted by Golgi apparatus are called _______?

a. Lysosomes

b. Primary lysosomes

c. Secondary lysosomes

d. food vacuole

305. The bond formed when two or more atoms complete their electron shells by sharing electrons is called _______ ?

a. Ionic bond

b. Hydrogen bond

c. Covalent bond

d. Electrovalent bond

306. Which one is the basic element of organic compounds ________ ?

a. Oxygen

b. Hydrogen

c. Sulphur

d. Carbon

307. Reactions in which simple substances are combined to form complex substances are called _______ ?

a. Metabolic reactions

b. Catabolic reactions

c. Anabolic reactions

d. None of these

308. Which chemical component has the same % in bacterial as well as the mammalian cell _______ ?

a. Water

b. Carbohydrate

c. Proteins

d. Lipids

309. The branch of biology which deals with the study of chemical compounds and the chemical processes in the living organisms is called _______ ?

a. Chemistry

b. Biochemistry

c. Molecular biology

d. Both a and b

310. Which chemical component has  the greatest contribution in the total mammalian cell weight _______ ?

a. Proteins

b. Carbohydrate

c. Lipids

d. Water

311. Which one is an organic compound _______ ?

a. CO2

b. Water

c. Lipids

d. HCl

312. Carbon atom is ________ ?

a. Monovalent

b. Divalent

c. Trivalent

d. Tetravalent

313. The property of water due to which it works as a temperature stabilizer and hence protect living organisms from sudden thermal changes is _______ ?

a. High specific heat of vaporization

b. High specific heat capacity

c. Its Dipole nature

d. Its liquid state

314. The number of calories required to raise the temperature of 1g of water from 15 to 16 degree is called _______ ?

a. Specific heat of vaporization

b. Specific heat capacity

c. Caloric Heat

d. Both A and C

315. The one which is present in all living things is ________ ?

a. Cell nucleus

b. DNA or RNA

c. Cell membrane

d. Vacuole

316. The mechanism of stomatal movement is related to the branch of Biology called ________ ?

a. Taxonomy

b. Physiology

c. Morphology

d. Anatomy

317. Which of the following substance is most favorable to form structural component of biological membranes ________ ?

a. Hydrophilic Carbohydrates

b. Hydrophobic fats

c. Both a and b

d. None of these

318. Maximum number of species of living thing on earth are _______ ?

a. Algae

b. Fungi

c. Insects

d. Protozoa

319. Which statement is true about an aqueous medium _______ ?

a. Ionic as well as non ionic substance in aqueous media retains their identity

b. Enzymes can not perform catalysis reaction in this medium

c. Icons and molecules move randomly thus are in more favorable state to react with other molecules and ions

d. It is less favorable media for chemical reactions

320. Which of the following carbohydrate is tasteless ________ ?

a. Monosaccharide

b. Oligosaccharide

c. Polysaccharide

d. None of these

321. Which of the statement is not true for compounds like glycoprotein and glycolipids _______ ?

a. They are conjugated molecules of carbohydrates

b. Both have role in the extra cellular matrix of animals and bacterial cell wall

c. They are components of biological membranes

d. Both are produced and secreted by endoplasmic reticulum

322. A complex substance which on hydrolysis yields polyhydroxy aldehyde or ketone subunits is called ________ ?

a. Lipid

b. Carbohydrate

c. Protein

d. Carotene

323. Specific heat of vaporization of water is ________ ?

a. 574 Kcal/kg

b. 674 Kcal/kg

c. 774 Kcal/kg

d. 874 Kcal/kg

324. Cn(H2O)n. is a general formula of ________ ?

a. Monosaccharides

b. Oligosaccharides

c. Polysaccharides

d. Carbohydrates

325. Which one is the most complex sugar _______ ?

a. Monosaccharides

b. Oligosaccharides

c. Polysaccharides

d. None of these

326. Variety among amino acids is produced due to ________ ?

a. NH2 group

b. COOH group

c. R group

d. All of these

327. Primary structure of proteins determines ________ ?

a. Number of polypeptide chains involved

b. Bending of polypeptide chains

c. Amino acid sequence

d. Coiling of polypeptide chains

328. Ribose is an example of ________ ?

a. Trioses

b. Tetroses

c. Pentose

d. Hexose

329. The one which is not a globular protein ________ ?

a. Anti Rh-antibody

b. Enzyme

c. Myosin

d. Hemoglobin

330. Starch cellulose and glycan yield ________ on complete hydrolysis?

a. Maltose

b. Sucrose

c. Fructose

d. Glucose

331. ________ % of Glucose normally present in our blood is ?

a. 0.80%

b. 0.08%

c. 1.80%

d. 8%

332. Which of the following carbohydrate can not be hydrolyzed _______ ?

a. Monosaccharide

b. Oligosaccharide

c. Polysaccharide

d. None of these

333. An enzyme which converts a dipeptide into separate amino acids is an example of _______ ?

a. Decarboxylase

b. Hydrolase

c. Oxidoreductase

d. Transferase

334. Which one is soluble in hot water _______ ?

a. Starch

b. Glycogen

c. Amylose

d. Amylopectin

335. For the synthesis of 10g of glucose ________ of energy is required?

a. 717.6 Kcal

b. 727 Kcal

c. 737 Kcal

d. 747 Kcal

336. Cellular digestion is associated with which organelle ________ ?

a. Mitochondria

b. Golgi bodies

c. Plastids

d. Lysosomes

337. The covalent bond between two monosaccharide subunits is called _______ ?

a. Phosphodiester bond

b. Peptide bond

c. Glycosidic bond

d. Ionic bond

338. The unicellular organisms ingest large molecules into their cytoplasm from the external environment without previously digesting them. This process is called _______ ?

a. Diffusion

b. Osmosis

c. Phagocytosis

d. Plasmolysis

339. Which of the following polysaccharide is called animal starch _______ ?

a. Starch

b. Glycogen

c. Cellulose

d. None of these

340. Which one gives blue colour with iodine _______ ?

a. Starch

b. Glycogen

c. Cellulose

d. Polysaccharide

341. Mycoplasmas have been included in bacteria because:

a. Do not have a cell wall

b. Are heterotrophic

c. Lack membrane bounded organelles

d. Reproduce by binary fission

342. Which one is abundant in animals ________ ?

a. Starch

b. Glycogen

c. Cellulose

d. None of these

343. The one which can tolerate highest external osmotic pressure is ________ ?

a. Algae

b. Amoeba

c. Fungi

d. Bacteria

344. The cell wall of oomycetes is chiefly composed of _________ ?

a. Chitin

b. Cellulose

c. Lignin

d. Proteins

345. ________ is example of pure form of cellulose?

a. Silk

b. Wool

c. Cotton

d. Paper

346. A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called ________ ?

a. Monosaccharide

b. Fatty acid

c. Neutral lipid

d. Nucleic acid

347. Lipids are soluble in which of the following ________ ?

a. Water

b. Ether

c. All solvents

d. Not in any of the above

348. One called green protists are included in _______ ?

a. Monera

b. Algae

c. Slime molds

d. Plants

349. Lipid molecules can store double amount of energy as compared to same amount of carbohydrate because of high number of ________ ?

a. C-C bonds

b. C-H bonds

c. C-N bonds

d. C-O bonds

350. Fatty acids containing 18 C atoms and a single double bond is _______ ?

a. Saturated Fatty acid

b. Unsaturated Fatty acid

c. Oleic Acid

d. Palmitic acid