Biology 151-200 MCQs

Biology

151. Which character differentiates living things from non-living organisms __________ ?

a. They live in the same ecosystem

b. They are acted upon by the same environment

c. They are highly organized and complex made of one or more cells and contain genetic material

d. Both a & b

152. The study of fossils is called _______?

a. Environmental

b. Historical biology

c. Paleontology

d. Social biology

153. A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called ________?

a. Substrate

b. Co-factor

c. Inhibitor

d. Promotor

154. The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by _________?

a. Molecular biologists

b. Microbiologists

c. Freshwater biologists

d. Social biologists

155. Percentage of water in brain cells is ________?

a. 20%

b. 65%

c. 85%

d. 89%

156. The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds this stable form is called ________?

a. An organ

b. A molecule

c. Tissue

d. Both a and c

157. Different species of plants and animals living in the same habitat is called _______?

a. Population

b. Community

c. Biome

d. Habitat

158. In animals coordination is achieved by means of ________?

a. Respiratory system

b. Nervous system

c. Endocrine system

d. Both b and c

159. _________ is the potential source of chemical energy for cellular activities?

a. C-H bond

b. C-O bond

c. C-N bond

d. P-O-C bond

160. The branch of biology which deals with the study of social behavior and communal life of human beings living in any environment is called ________?

a. Environmental biology

b. Social biology

c. Human biology

d. Both b and c

161. The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time sequence came from the studies by _________?

a. Environmental biologist

b. Paleontologist

c. Marine biologist

d. Social biologist

162. Group of living organisms of same species living in the same place at the same time is called ________?

a. Community

b. Population

c. Ecosystem

d. Biome

163. Control of organisms by using living organisms is called _________?

a. Bioremediation

b. Integrated disease management

c. Antisepsis

d. Biological control

164. Which one is a micro molecule ________?

a. Polysaccharide

b. Protein

c. Hemoglobin

d. ATP

165. Unbroken series of organisms arranged from ancestor to descendant sequence is _________?

a. Biodiversity

b. Phyletic lineage

c. Connecting link

d. Evolutionary line

166. Out of 92 naturally occurring chemical elements how many are considered as bio-elements ________?

a. 6

b. 16

c. 26

d. 15

167. A large regional community primarily determined by climate is called ________?

a. Population

b. Community

c. Biome

d. Habitat

168. Branch of biology which deals with the study of chemical components and chemical processes in living organisms is called _________?

a. Molecular biology

b. Physiology

c. Biochemistry

d. Atomic biology

169. A structure formed by groups of similar cells organized into loose sheets or bundles performing similar functions is called as ________?

a. An organ

b. An organism

c. A tissue

d. A cell

170. Oxygen accounts for ________ percent of totals human body mass?

a. 65%

b. 18%

c. 10%

d. 3%

171. Out of total organisms on earth, _________ are vascular plants?

a. 53.10%

b. 19.90%

c. 17.60%

d. 9.40%

172. Breakdown of large molecules into smaller ones utilizing water molecules is _________?

a. Hydration

b. Hydrolysis

c. Dehydration synthesis

d. Dehydration synthesis

e. Electrolysis

173. Intake of liquid material by cell membrane is called _________?

a. Endocytosis

b. Exocytosis

c. Phagocytosis

d. Pinocytosis

174. Which one is not correct for a productive theory _________?

a. It is predictive

b. It has explanatory power

c. It discourages suggestion of different hypothesis

d. None of these

175. _______ is concerned with cell secretions?

a. Endoplasmic reticulum

b. Golgi complex

c. Lysosomes

d. Cell membrane

176. Synthetic insulin from pork was formed by which technique _________?

a. Parasitology

b. Social biology technique

c. Biotechnology

d. Both a and c

177. Cytoskeleton involved in assembly and disassembly of the spindle during mitosis is of ________ ?

a. Microtubules

b. Microfilaments

c. Intermediate filaments

d. None of these

178. _________ is used to relieve one kind of headache, migraine?

a. Penicillin

b. Lovastatin

c. Cyclosporine

d. Ergotin

179. Bacteria which grow either in the presence or absence of oxygen ________?

a. Aerobic bacteria

b. Anaerobic bacteria

c. Facultative bacteria

d. Microaerophilic

180. It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect:

a. Older sediment layers have equal amount of these radioactive isotopes as that of the young ones

b. Older sediment layers have less amount of these radioactive isotopes as that of the young ones

c. Older sediment layers have greater amount of these radioactive isotopes as that of the young ones

d. Older sediment layers did not have these radioactive isotopes

181. Reverse transcriptase is present in ________?

a. All RNA viruses

b. All DNA viruses

c. All retroviruses

d. All viruses

182. Destruction of all life forms is called ________?

a. Sterilization

b. Disinfection

c. Antisepsis

d. Preservation

183. Pox viruses are ________?

a. RNA non-enveloped

b. RNA enveloped

c. DNA non-enveloped

d. DNA enveloped

184. Pollen grains in Pinus have ________ for dispersal through wind?

a. Flagella

b. Cilia

c. Wings

d. Feathers

185. The single healthy megaspore retained within the megasporangium germinates to form an egg containing female gametophyte called _______?

a. Ovule

b. Seed

c. Fruit

d. Embryo sac

186. Alternation of generation is absent in _________?

a. Hydration

b. Obelia

c. Jelly fish

d. Physalia

187. Double fertilization is feature of ________?

a. Ferns

b. Whisk ferns

c. Gymnosperms

d. Angiosperms

188. If bile pigments are prevented from leaving digestive tract, then they cause ________?

a. Hepatitis

b. Jaundice

c. Gall stones

d. Blockage

189. Initial pH of food vacuole during digestion in amoeba is ________?

a. 5.3

b. 5.6

c. 7.3

d. 7.6

190. The arrangement of _______ speaks of the division of labour within cell?

a. Molecule

b. Subatomic particles

c. Atoms

d. Organelles

191. NADH is oxidized by ________?

a. Coenzyme

b. Cytochrome

c. Oxygen

d. Glycolysis

192. Salivary glands present in the front of ear are ________?

a Sublingual

b. Submaxillary

c. Submandibular

d. Parotid

193. How many spiracles are present in cockroach _______?

a. 5

b. 10

c. 20

d. 40

194. Which of the following is the correct sequence n the biological method?

a. Observation-Hypothesis-Law-Theory

b. Observation-Hypothesis-Deduction-Testing of deduction

c. Hypothesis-Observation-Deduction-Testing of deduction

d. Law-Theory-Deduction-Observation

195. Amphibians are considered to be evolved from _______?

a. Newts

b. Varanope

c. Dipnoi

d. Hagfishes

196. Enterobius vermicularis is commonly known as ________?

a. Flatworm

b. Pinworm

c. Hook worm

d. Tapeworm

197. Red to orange pigments are ________?

a. Carotenes

b. Carotenoids

c. Xanthophylls

d. Chlorophyll

198. Animals of which class of arthropoda are present everywhere _______?

a. Crustacean

b. Insecta

c. Arachnida

d. Myriapoda

199. Gaseous exchange in birds occurs at level of _________?

a. Alveoli

b. Air sacs

c. Bronchi

d. Parabronchi

200. ________ of earth surface is covered with water?

a. 10%

b. 30%

c. 75%

d. 90%