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