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Monascus purpureus is a yeast commercially used in the production of
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 13 of Quiz-1459 (Que-ID : 3381)
Monascus purpureus is a yeast commercially used in the production of
- citric acid
- ethanol
- blood cholesterol lowering statins
- streptokinase for removing clots from blood vessels
Ans → (c)blood cholesterol lowering statins
Explanation → Monascus purpureus is a yeast commercially used in the production of blood cholesterol lowering statins
This question is taken from this post → Microbes in Human Welfare : Class - 12th (Biology) Practice Test | MCQs for NEET - attemp/practice
More MCQs in - Microbes in Human Welfare : Class - 12th (Biology) Practice Test | MCQs for NEET
Q. 1 of Quiz-1459 (Que-ID : 3369)
Integrated Pest Management (IPM) discourages the excessive used of
- biological methods
- chemical pesticides
- mechanical methods
- all of these
Q. 2 of Quiz-1459 (Que-ID : 3370)
Which of the following is not used as a biopesticide ?
- Trichoderma harzianum
- Nucleopolyhedrovirus
- Xanthomonas campestris
- Bacillus thuringiensis
Q. 3 of Quiz-1459 (Que-ID : 3371)
Organic farming does not include
- green manures
- chemical fertilisers
- farmyard manures
- compost
Q. 4 of Quiz-1459 (Que-ID : 3372)
Organic farming includes
- use of fertilisers and pesticides of biological origin
- IPM (Integrated Pest Management)
- locally developed pest resistant varieties
- all of these
Q. 5 of Quiz-1459 (Que-ID : 3373)
Living organisms used to enrich the nutrient quality of the soil are called as
- biocontrol agents
- biofertilisers
- synthetic fertilisers
- natural fertilisers
Q. 6 of Quiz-1459 (Que-ID : 3374)
Biofertilisers are
- some bacteria and cyanobacteria
- fertilisers formed by ploughing in barseem
- fertilisers obtained by decay of dead organisms
- fertilisers prepared by mixing cattle dung with crop residues
Q. 7 of Quiz-1459 (Que-ID : 3375)
Biofertilisers are the living organisms which
- bring about soil nutrient enrichment
- maximise the ecological benefits
- minimise the environmental hazards
- all of these
Q. 8 of Quiz-1459 (Que-ID : 3376)
Which one of the following can be used as biofertiliser in cotton field ?
- Azolla-Anabaena
- Streptococcus
- Azospirillum
- Azotobacter chroococcum
Q. 9 of Quiz-1459 (Que-ID : 3377)
The symbiotic association between fungi and roots of higher plants is referred to as
- lichen
- mycorrhiza
- biofertiliser
- biocontrol agent
Q. 10 of Quiz-1459 (Que-ID : 3378)
Cyanobacteria are
- heterotrophs
- chemotrophs
- autotrophs
- organotrophs
Q. 11 of Quiz-1459 (Que-ID : 3379)
Enzyme which has the fibrinolytic effect is
- protease
- amylase
- lipase
- streptokinase
Q. 12 of Quiz-1459 (Que-ID : 3380)
Statins used for lowering blood cholesterol level are extracted from
- algae
- bacteria
- viruses
- yeast
Q. 13 of Quiz-1459 (Que-ID : 3381)
Monascus purpureus is a yeast commercially used in the production of
- citric acid
- ethanol
- blood cholesterol lowering statins
- streptokinase for removing clots from blood vessels
Q. 14 of Quiz-1459 (Que-ID : 3382)
During the primary treatment of sewage, solid particles that settle down are called
- floes
- primary sludge
- activated sludge
- anaerobic sludge
Q. 15 of Quiz-1459 (Que-ID : 3383)
The purpose of biological treatment of waste water is to
- reduce BOD
- increase BOD
- reduce sedimentation
- increase sedimentation
Q. 16 of Quiz-1459 (Que-ID : 3384)
The masses of bacteria held together by slime and fungal filaments to form mesh-like structures are called as
- primary sludge
- floes
- activated sludge
- anaerobic sludge
Q. 17 of Quiz-1459 (Que-ID : 3385)
BOD is………..in polluted water and in potable water.
- more, less
- less, more
- less in both
- medium in both
Q. 18 of Quiz-1459 (Que-ID : 3386)
n the sewage treatment, bacterial floes are allowed to sediment in a settling tank. This sediment is called as
- inactivated sludge
- activated sludge
- primary sludge
- secondary sluge
Q. 19 of Quiz-1459 (Que-ID : 3387)
Which of the following steps is taken by the Ministry of Environment and Forests to protect rivers from water pollition ?
- Ganga Action Plan
- Narmada Action Plan
- Yamuna Action Plan
- Both (a) and (c)
Q. 20 of Quiz-1459 (Que-ID : 3388)
Methanogens, growing anaerobically on cellulosic material produce
- methane
- methane and carbon dioxide
- methane and hydrogen
- methane, carbon dioxide and hydrogen
Q. 21 of Quiz-1459 (Que-ID : 3389)
Which of the following bacteria is present in the rumen of cattle ?
- Azotobacter
- Rhizobium
- Methanobacterium
- Azospirillum
Q. 22 of Quiz-1459 (Que-ID : 3390)
Process of biogas production is
- aerobic process
- anaerobic process
- active process
- passive process
Q. 23 of Quiz-1459 (Que-ID : 3391)
Biogas is produced by
- aerobic breakdown of biomass
- anaerobic breakdown of biomass
- with the help of methanogenic bacteria
- both (b) and (c)
Q. 24 of Quiz-1459 (Que-ID : 3392)
Dragonflies are used to get rid of
- mosquitoes
- aphids
- butterfly caterpillars
- both (a) and (b)
Q. 25 of Quiz-1459 (Que-ID : 3393)
A microbial biocontrol agent that can be used to control butterfly caterpillars is
- Trichoderma polysporum
- Bacillus thuringiensis
- Streptococcus
- mycorrhiza
More MCQs In - General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 19 of Quiz- (Que-ID : 3537)
Act formulated in 1996 was
- Insecticide Act
- Air (Prevention and Control of Pollution) Act
- Water (Prevention and control of Pollution) Act
- Environment protection Act
Q. 10 of Quiz- (Que-ID : 1719)
The organism that lives at the cost of another living organism is called-
- Aphrodite
- saprophyte
- epiphyte
- parasite
Q. 14 of Quiz- (Que-ID : 2882)
In which of the following weeks of pregnancy CVS is done ?
- 12th – 14th week
- 8th – 10th week
- 5th – 7th week
- None of these
Q. 1 of Quiz- (Que-ID : 2944)
Which of the following statements is the most appropriate for sickle cell anaemia ?
- It cannot be treated with iron supplements.
- It is a molecular disease.
- It conferes resistance to acquiring malaria
- All of the above.
Q. 13 of Quiz- (Que-ID : 3506)
Nandan Kanha Zoo is know for the
- Nilgiri tiger
- Hippopotamus
- White Tiger
- Whale
Q. 23 of Quiz- (Que-ID : 2791)
In a scientific name, the name of the author is printed in
- Abbreviated
- Capital letter
- Bold
- Italics
Q. 23 of Quiz- (Que-ID : 2766)
Implantation of embryo and placentation is under control of
- FSH
- Estrogen
- Progesterone
- Estradiol
Q. 18 of Quiz- (Que-ID : 3486)
The average efficiency of energy transfer from herbivoure to carnivorce level is
- 5%
- 10%
- 20%
- 30%
Q. 20 of Quiz- (Que-ID : 3063)
One molecule of glucose yields ___ ATP molecules in aerobic respiration.
- 2
- 16
- 38
- 42
Q. 5 of Quiz- (Que-ID : 3098)
The formation of first stable product of nitrogen fixation is catalysed by enzyme
- dehydrogenase
- nitrogenase
- isomerase
- none of these
Q. 20 of Quiz- (Que-ID : 3038)
IAA is naturally occurring plant hormone called
- Gibberlin
- Auxin
- Cytokinin
- Absicic acid
Q. 11 of Quiz- (Que-ID : 3354)
Hisardale is a new breed of sheep developed in Punjab by crossing
- Merino ram and Bikaneri ewe
- Assel ram and White leghorn ewe
- Rhode Island ram and White leghorn ewe
- Cochin ram and Ghagus ewe
Q. 1 of Quiz- (Que-ID : 3319)
A person with sickle cell anaemia is
- more prone to malaria
- more prone to typhoid
- less prone to malaria
- less prone to typhoid
Q. 24 of Quiz- (Que-ID : 3167)
The introduction of t-DNA into plants involves
- Altering the pH of the soil, then heat shocking the plants
- Exposing the plants to cold for a brief period
- Allowing the plant roots to stand in water
- Infection of the plant by Agrobacterium tumefaciens
Q. 11 of Quiz- (Que-ID : 2879)
RCH stands for
- routine check-up of health
- reproduction cum hygiene
- reversible contraceptive hazards
- reproductive and child health care
Q. 7 of Quiz- (Que-ID : 2875)
In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube ?
- Embryo only, upto 8 cell stage
- Either zygote or early embryo upto 8 cell stage
- Embro of 32 cell stage
- Zygote only
Q. 6 of Quiz- (Que-ID : 3024)
Opening of floral buds into flowers, is a type of:
- Autonomic movement of variation
- Autonomic movement of locomotion
- Autonomic movement of growth
- Paratonic movement of growth
Q. 25 of Quiz- (Que-ID : 3218)
Vessels and companion cells are respectively present in the xylem and phloem of
- Gymnosperm
- Pteridophytes
- Angiosperm
- Bryophyta
Q. 15 of Quiz- (Que-ID : 3108)
Phytotron is meant for
- Controlled humidity
- Induction of mutations
- Controlled irradiation
- Growing plants under controlled environment
Q. 4 of Quiz- (Que-ID : 3272)
The seedless vascular plants whose sporophytes are larger than their small and independent gametophytes are
- Pteridophytes
- Angiosperms
- Gymnosperms
- None of these
Q. 10 of Quiz- (Que-ID : 2878)
The correct surgical procedure as a contraceptive method is
- ovariectomy
- hysterectomy
- vasectomy
- castration
Q. 14 of Quiz- (Que-ID : 3007)
Lampbrush chromosomes are observed in
- Mitotic prophase
- Mitotic metaphase
- Meiotic metaphase
- Meiotic prophase
Q. 24 of Quiz- (Que-ID : 3492)
Best type of pyramid which is always true is:
- Pyramid or energy
- Pyramid of Biomass
- Pyramid of number
- Both (a) and (c)
Q. 25 of Quiz- (Que-ID : 3118)
Analysis of xylem sap shows
- presence of enzymes
- presence of organic matter
- presence of nutrients
- presence of mineral salts
Q. 17 of Quiz- (Que-ID : 2986)
Presence of glucose in urine is known as
- Ketonuria
- Glycosides
- Glycosuria
- None of the above
Q. 21 of Quiz- (Que-ID : 3139)
Root hairs absorb water from soil with the help of
- Root pressure
- osmotic pressure
- Suction pressure
- Turger pressure
Q. 9 of Quiz- (Que-ID : 2777)
A system which gets a continuous flow of energy
- Micro propagated system
- Closed system
- Open system
- Steady system
Q. 24 of Quiz- (Que-ID : 2892)
Which method can be used for women that cannot produce ovum but can provide suitable environment ?
- IUD
- GIFT
- IUI
- IUI
Q. 3 of Quiz- (Que-ID : 1580)
Enzymatic hydrolysis of major nutrients in GIT to yield their simpler components is .....
- Fermentation
- Deglutition
- Glycolysis
- Digestion
Q. 9 of Quiz- (Que-ID : 3302)
Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters ?
- Lack of pigment in cave-dwelling animlas
- Melanisation in peppered moth
- Absence of limbs in snakes
- Presence of webbed toes in aquatic birds
Q. 7 of Quiz- (Que-ID : 2800)
Vestibular apparatus is made up of three semi circular canals. These canals lies at ____ degree angle to each other.
- 30
- 45
- 60
- 90
Q. 33 of Quiz- (Que-ID : 604)
Which of the following is not a Reptile ?
- Green-turtle
- Crocodile
- Salamandra
- Garden Lizard
Q. 23 of Quiz- (Que-ID : 2992)
On average how much blood is filtered by kidney per minute
- 500-800ml
- 1100- 1200ml
- 1500-1700ml
- 1600-1800ml
Q. 18 of Quiz- (Que-ID : 2631)
Crypts in between bases of villi in intestine are known as
- Crypts of lieberkuhn
- Crypts of intestine
- Crypts of stomach
- None of the above
Q. 12 of Quiz- (Que-ID : 2880)
Amminocentesis is a technique used to
- determine errors in amino acid metabolism in embryo
- pin point specific cardiac ailments in embryo
- determine any hereditary genetic abnormality in embryo
- all of these
Q. 7 of Quiz- (Que-ID : 3225)
In Lathyrus, the leaves are modified into
- thorns
- cladodes
- tendrils
- spines
Q. 1 of Quiz- (Que-ID : 3019)
Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
Q. 10 of Quiz- (Que-ID : 3278)
Gymnosperms produce neither flower nor fruit because they do not possess
- Embryo
- Ovary
- Ovule
- Seed
Q. 17 of Quiz- (Que-ID : 3435)
Natural genetic engineer is :
- Bacillus subtilis
- Pseudomonas sp
- Escherichia coli
- Agrobacterium tumefaciens
Q. 9 of Quiz- (Que-ID : 3935)
Which of the following influence feedback inhibition of enzyme?
- End product
- External factors
- Enzyme
- Substrate
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