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Biology objective questions (Intermediate Level) | Quiz: Biology General Knowledge Questions

1 >>Number of amino acids present in the plant, animal and microbial proteins is ?
  • (A) 20
  • (B) 80
  • (C) 150
  • (D) 200
2 >>Which of the following is important in oxidative and fat metabolism ? ?
  • (A) Glucose
  • (B) Pyruvic acid
  • (C) Acetyl CoA
  • (D) Carbon dioxide
3 >>Genetic information in human beings is stored in ?
  • (A) DNA
  • (B) RNA
  • (C) both DNA and RNA
  • (D) none of above
4 >>ATP-ADP system was discovered in ?
  • (A) 1940
  • (B) 1944
  • (C) 1943
  • (D) 1840
5 >>The active site of an enzyme is formed by ?
  • (A) R groups of aminoacids
  • (B) aminogroups of aminoacids
  • (C) COOH groups of aminoacids
  • (D) exposed sulfur bonds
6 >>Pituitary controls urine volume through ?
  • (A) ADH
  • (B) STH
  • (C) ACTH
  • (D) GH








7 >>In which of the following types of enzyme water may be added to a C = C bond without breaking the bond ?
  • (A) hydroxylase
  • (B) hydratase
  • (C) hydrolase
  • (D) esterase
8 >>Which part of the cell disappears during mitosis ? ?
  • (A) Plasma membrane
  • (B) Nucleolus
  • (C) Plastid
  • (D) None
9 >>′U′ or ′V′ or ′J′ shaped chromosomes are seen in ?
  • (A) prophase
  • (B) metaphase
  • (C) telophase
  • (D) anaphase
10 >>One of the following cells can divide by meiosis ?
  • (A) Sporocyte
  • (B) Meiocytes
  • (C) Primary spermatocyte and primary oocytes
  • (D) All above
11 >>He La cells can be used to study cell division ; they are ?
  • (A) human skin cancer cells
  • (B) human uterine cancer cells
  • (C) human heart cells
  • (D) rat uterine cancer cells
12 >>Von Helmont concluded that plants get their food from ?
  • (A) air
  • (B) water
  • (C) humus
  • (D) air





13 >>H2OEmerson defined red drop as decline in the quantum yield of photosynthesis at wavelength ?
  • (A) 460 nm
  • (B) 670 nm
  • (C) 680 nm
  • (D) more than 680 nm
14 >>In a chlorophyll molecule, the magnesium is situated in the ?
  • (A) centre of porphyrin
  • (B) corner of phytol
  • (C) phytol chamber
  • (D) isocyclic ring
15 >>Chlorophyll a is not found in ?
  • (A) alage
  • (B) photosynthetic bacteria
  • (C) a and b both
  • (D) bryophytes
16 >>Intensity of light increases 20 times, rate of photosynthesis will ?
  • (A) increase
  • (B) not increase
  • (C) decrease
  • (D) increase till feed back inhibition
17 >>The most efficient converter of sunlight is ?
  • (A) potato
  • (B) tomato
  • (C) sugar cane
  • (D) papaya
18 >>The energy stored in one molecule of NADPH and one molecule of ATP are ���.. and ���.. respectively ?
  • (A) 52 kcal, 7 kcal
  • (B) 520 kcal, 70 kcal
  • (C) 150 kcal, 22 kcal
  • (D) 650 kcal, 90 kcal
19 >>One of the following involves loss of 2 electrons and 2 protons ?
  • (A) carboxylase
  • (B) dehydrogenase
  • (C) kinase
  • (D) deamination
20 >>Pick up C4 plant. ?
  • (A) Papaya
  • (B) Potato
  • (C) Maize
  • (D) Pea
21 >>Translocation of sugar in angiosperms occur in form of ?
  • (A) glucose
  • (B) starch
  • (C) lactose
  • (D) sucrose
22 >>During dark reaction, for the fixation of carbon, the three carbon atoms of each molecule of 3-phosphoglyceric acid (PGA) are derived from ?
  • (A) RuBP only
  • (B) CO2 only
  • (C) RuBP + CO2
  • (D) RuBP + CO2 + PEP
23 >>The number of photons required to release one mole of O2 in photosynthesis is called ?
  • (A) quantum yield
  • (B) quantum requirement
  • (C) red drop
  • (D) Emerson′s effect
24 >>The dye used by Hill in his experiments was ?
  • (A) eosin
  • (B) resorcin
  • (C) dichlorophenol indophenol
  • (D) sulphur green
25 >>The end product of fermentation of sugars by Psuedomonas bacteria is ?
  • (A) lactic acid and alcohol
  • (B) CO2
  • (C) ethyl alcohol + CO2
  • (D) butyl alcohol
26 >>Fermentation is carried out by ?
  • (A) all bacteria
  • (B) all fungi
  • (C) some bacteria and some fungi
  • (D) all micro-organisms








27 >>In metabolism of glycogen, first to be formed is ?
  • (A) glucose 1 phosphate
  • (B) glucose 6 phosphate
  • (C) glucose
  • (D) dextrin
28 >>Which reaction leads to direct formation of ATP in Kreb′s cycle ? ?
  • (A) Glucose-1-phosphate to glucose-6-phosphate
  • (B) Citrate to isocitrate
  • (C) Ketoglutarate to succinate
  • (D) Isocitrate to cis-aconitate
29 >>Terminal oxidation is essential for oxidation of ?
  • (A) enzymes
  • (B) ATP
  • (C) H2O
  • (D) coenzymes
30 >>Protein rich pulses have R.Q. equal to ?
  • (A) one
  • (B) more than one
  • (C) less than one
  • (D) none above
31 >>In aerobic respiration ?
  • (A) glucose is the only substrate
  • (B) glucose is a preferred substrate
  • (C) glucose cannot be used directly
  • (D) any material which burns in air is used as a substrate
32 >>All of the following are prosthetic groups in pyruvate to acetyl CoA reaction, except ?
  • (A) Mn
  • (B) thiamine pyrophosphate and coenzyme A
  • (C) lipoic acid
  • (D) NAD
33 >>Total ATP production during EMP pathway is ?
  • (A) 24 ATP molecules
  • (B) 8 ATP molecules
  • (C) 38 ATP molecules
  • (D) 15 ATP molecules
34 >>Pentose monophosphate shunt is more advantageous to Kreb′s cycle as ?
  • (A) it yield more ATP
  • (B) ribose sugar is released which helps in nucleic acid formation
  • (C) it releases more oxygen
  • (D) it utilizes less oxygen





35 >>The term, ′growth′ is used to denote ?
  • (A) an increase in size by enlargement and division of cell
  • (B) synthesis of new cellular material
  • (C) organisation of sub-cellular organelles
  • (D) all of these
36 >>In log, phase, growth is ?
  • (A) slowest
  • (B) fastest
  • (C) intermediate
  • (D) no growth at all
37 >>The name ′gibberellin′ was coined by ?
  • (A) Kurosawa
  • (B) Yabuta
  • (C) Mitchell
  • (D) Brain
38 >>Kinetin was first isolated and identified by ?
  • (A) Charles Darwin
  • (B) Boysen and Jansen
  • (C) Paal
  • (D) Miller
39 >>′Morphactins′ are ?
  • (A) synthetic growth regulators
  • (B) synthetic auxins
  • (C) synthetic gibberellins
  • (D) none of these
40 >>Nastic movements differ from tropic movements in being ?
  • (A) directional with respect to stimulus
  • (B) non-directional with respect to stimulus
  • (C) controlled by turgor pressure
  • (D) controlled by chemicals
41 >>The growth movement in stem-apex of pea is type ?
  • (A) hygroscopic
  • (B) nutation
  • (C) nastic
  • (D) tropism
42 >>Phytochromes are found in ?
  • (A) Golgi complex
  • (B) mitochondria
  • (C) cell-membrane
  • (D) endoplasmic reticulum
43 >>Photoperiodic stimulus in plants is perceived by ?
  • (A) stem
  • (B) flower
  • (C) leaf
  • (D) root
44 >>Cycocel is a ?
  • (A) wound hormone
  • (B) growth hormone
  • (C) rhizocaline necessary for root formation
  • (D) growth retardant
45 >>Ethylene is involved in ?
  • (A) aerobic resiration
  • (B) anaerobic respiration
  • (C) climacteric respiration
  • (D) fermentation
46 >>Hormone receptors have ?
  • (A) low affinities
  • (B) moderate affinities
  • (C) very high affinities
  • (D) no attractions to hormones
47 >>Vasopressin is related with ?
  • (A) concentration of urine
  • (B) dilution of urine
  • (C) quick digestion
  • (D) slow heart beat
48 >>Administration of thyroxin into the body ?
  • (A) increases the rate of oxygen consumption
  • (B) lowers the level of sweating
  • (C) increases the pulse rate
  • (D) reduces the pulse rate
49 >>Insulin deficiency produces ?
  • (A) increased entry of glucose into cells
  • (B) reduced entry of glucose into cells
  • (C) decreased release of glucose from liver
  • (D) no effect on carbohydrate metabolism
50 >>The set of female hormones is ?
  • (A) adrenocorticotropic and androgens
  • (B) estradiol and progesterone
  • (C) testosterone androgens
  • (D) all above
51 >>Progesterone when given ?
  • (A) alone causes growth of breast
  • (B) with estrogen causes growth of breast
  • (C) alone depresses the growth of breast
  • (D) with estrogen depresses the growth of breast
52 >>The growth rate in childhood is controlled by ?
  • (A) thymosine
  • (B) testosterone
  • (C) oestrogen
  • (D) thyroxine
53 >>Animals that feed on fluids or dissolved substances are ?
  • (A) macrophagous
  • (B) microphagous
  • (C) osmotrophs
  • (D) autotrophs
54 >>What is the name given to teeth that are square with enamel enclosing softer areas of dentine ? ?
  • (A) Secodont
  • (B) Solenodont
  • (C) Hypsodont
  • (D) Pleurodont
55 >>Ileum of rabbit is very long as compared to that of frog because ?
  • (A) rabbit is larger in size
  • (B) rabbit is omnivore
  • (C) it is a mammal
  • (D) it is a herbivore
56 >>For how much time on average meal stays in fish-hook stomach ? ?
  • (A) 6-8 hrs
  • (B) 3-4 hrs
  • (C) 1-2 hrs
  • (D) 8-10 hrs
57 >>Glucagon is produced in the islet of Langerhans by ?
  • (A) Beta cells
  • (B) alpha cells
  • (C) delta cells
  • (D) both a and b
58 >>Cow′s milk is more nutritious and slightly yellow due to presence of ?
  • (A) vitamin D
  • (B) ascorbic acid
  • (C) riboflavin
  • (D) tryptophan
59 >>The reason why liver of people addicted to alcohol gets damaged is that it ?
  • (A) has to detoxify the alcohol
  • (B) store excess of glycogen
  • (C) is over stimulated to secrete bile
  • (D) accumulate excess of fats
60 >>The functional units of the lungs are ?
  • (A) trachea
  • (B) bronchi
  • (C) bronchioles
  • (D) alveoli

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