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Biology Online Quizzes
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Biology Quiz Test 07
______ respiration is the process by which cell utilized oxygen and produces CO2 ?
(A) Cellular
(B) Organismic
(C) Both of these
(D) None of these
Active transport is dependent on
(A) Photosynthesis
(B) Respiration
(C) Photophosporylation
(D) None of these
Normal body temperature in mamals like human beings is
(A) 26 – 28°C
(B) 36 – 38°C
(C) 46 – 48°C
(D) 56 – 58°C
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
Breeders have developed new and better varieties of food items by using which technique?
(A) Pasteurization
(B) Hydroponic culture technique
(C) Genetic engineering
(D) Biological control techniques
One celled green ptotists are included in
(A) Monera
(B) Algae
(C) Slime molds
(D) Plants
______ is a nervous disorder characterized by involuntary tremors, diminished motor power and rigidity?
(A) Epilepsy
(B) Meningitis
(C) Alzheimer disease
(D) Parkinson disease
Ribosomes were discovered by
(A) Golgi
(B) De Duve
(C) Palade
(D) R.Brown
Photosystem II has molecules which absorbs maximum light of
(A) 680 nm
(B) 100 m
(C) 700 nm
(D) 670 nm
Single circuit heart is found in
(A) Fishes
(B) Amphibians
(C) Reptiles
(D) Mammals
Coenocytic hyphae are also known as
(A) Septate
(B) Perforated hyphae
(C) Aseptate
(D) Uninucleate hyphae
Exoskeleton of a marine snail is composed of
(A) CaPO4
(B) CaCO3
(C) CaSO4
(D) SiO2
Lock and Key model was proposed by
(A) Emil Fischer
(B) Koshland
(C) Robin Williams
(D) Rudolph Virchow
More than ___________ compounds of tar of tobacco smoke are involved to cause cancer?
(A) 5
(B) 90
(C) 15
(D) 10
Operculum is present in
(A) bony fish
(B) sea fish
(C) cartilaginous fish
(D) none of these
Organisms of which of the following kingdom have absorptive mode of nutrition
(A) Prokaryotae
(B) Protoctista
(C) Animalia
(D) Fungi
The word Archaeobacteria (a division of bacteria) derived from Greek means
(A) True bacteria
(B) False bacteria
(C) Recent bacteria
(D) Ancient bacteria
The Study of organisms inhabiting the sea and Ocean and the physical and chemical characteristics of their environment is
(A) Social Biology
(B) Marine Biology
(C) Environmental Biology
(D) Fresh Water Biology
In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon
(A) Their physical properties like size & weight
(B) Physical properties of the medium like its density
(C) Their electrical properties like their charges
(D) Both a and b
Exoskeoeton of coelenterates terates is made up to
(A) Calcium
(B) Silica
(C) Chitin
(D) Both A & B
An enzyme which can convert single stranded RNA into double stranded viral DNA is called
(A) DNAase
(B) RNAase
(C) DNA polymerase
(D) Reverse Transcriptase
Example of bacteria requiring low concentration of oxygen is
(A) Campylobactor
(B) spirocheta
(C) E-coli
(D) Pseudomonas
Ribose is an example of
(A) Trioses
(B) Tetroses
(C) Pentose
(D) Hexose
The membrane of vacuoles is known as
(A) Vacuoloplast
(B) Tonoplast
(C) Tanoplast
(D) All of these
The survival of an animal depends upon its ability to take some from its environment
(A) Chemicals
(B) Hydrocarbons
(C) Organic molecules
(D) Inorganic molecules
Deoxygenated blood first enters in _________ part in fishes?
(A) Sinus venosus
(B) Right atrium
(C) Left atrium
(D) Conus arteriosus
Which of the following one is not found in series Proterostomia?
(A) Annelida
(B) Arthropoda
(C) Mollusea
(D) Echinodermata
Excessive increase in temperature of medium causes the enzyme molecule to
(A) Activate
(B) Unaffected
(C) Denatured
(D) None of these
Animals obtain carbohydrates mainly from
(A) Glucose
(B) Starch
(C) Sucrose
(D) Glycogen
Purines and pyrimidines are in equal ration in DNA. It was indicated by
(A) F.Miescher
(B) Chargaff
(C) Watson & Crick
(D) Harshay & Chase
Double fertilization occurs in
(A) All plants
(B) All seed plants
(C) Gymnosperms
(D) Angiosperms
In all arthropods,the body is covered with a chittinous cuticle which is secreted by the
(A) Endodermis
(B) Mesophyll
(C) Chitin
(D) Epidermis
Resolution power of a compound microscope is
(A) 2.0 m
(B) 2-4 A
(C) 24 m
(D) 24 A
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 reaioactive isotopes as that of the young ones
(B) Older sediment layers have less amount of these reaioactive 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
All phostosynthetic euglenoids lose their chlorophyll when grown in dark and obtain their nutrients heterotrophically this statement is
(A) True
(B) False
(C) May be true may be false
(D) Unpredictable
The Kingdom of recyclers is known as kingdom
(A) Algae
(B) Bacteria
(C) Fungi
(D) Embryophyte
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
Secondary cell wall of sclerenchyma cells is impregnated with
(A) Cellulose
(B) Peptidoglycan and murein
(C) Lignin
(D) Pectin
Fishes, most of the invertebrates and amphibians are examples of ________ animals?
(A) Endotherms
(B) Ectotherms
(C) Heterotherms
(D) Homeotherms
Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong
(A) Globular proteins
(B) Fibrous Proteins
(C) Both a and b
(D) None of these
Endoskeleton is secreted by?
(A) Ectoderm
(B) Endoderm
(C) Mesoderm
(D) All of these
Root like structure in saprotrophic fungi are called
(A) Rhizodis
(B) Hyphae
(C) Haustoria
(D) Constricting rings
Earthworm is included in
(A) Kingdom Animalia
(B) Kingdom Plantae
(C) Kingdom Protoctista
(D) Kingdom Monera
An aspect of pragmatism is experiential learning, which says, education should come through
(A) experience
(B) practice
(C) knowledge
(D) observations
How many years after the diagnosis of HIV AIDS will a man die?
(A) 8 years
(B) 6 years
(C) 4 years
(D) 2 years
Out of 92 naturally occurring chemical elements how many are considered as bio-elements?
(A) 6
(B) 16
(C) 26
(D) 15
Nervous system of nematodes consists of?
(A) Ventral nerve cord
(B) Dorsal nerve cord
(C) Lateral nerve cord
(D) All of these
Normal resting membrane potential of a neuron is
(A) – 50 mv
(B) – 60 mv
(C) – 70 mv
(D) – 80 mv
Body is eel like in
(A) Cyclostomata
(B) Chondrichthyes
(C) Osteichthyes
(D) None of these
Megaphylls i.e. leaves with divided veins with an expanded lamina is a dharacteristic of
(A) Lycopods
(B) Ferns
(C) Seed plants
(D) Both b and c
How many species of fungi are known till now?
(A) 10000
(B) 100000
(C) 10000000
(D) 1000
A series of hypothesis supported by the results of many tests is called ?
(A) Scientific law
(B) Theory
(C) Data
(D) Deduction
The animals in which coelom is formed due to splitting of mesocerm are known as
(A) Pseudocoelous
(B) Schizocoelous
(C) Enterocoelous
(D) Emphicoelous
Sleep movements are a type of
(A) Turgor movements
(B) Growth movements
(C) Tactic movements
(D) Paratonic movements
ATP are consumed during
(A) Glycolysis
(B) Kreb’s cycle
(C) Light dependent phase
(D) none of these
Radiolarians belong to which of the following protozoal group
(A) Zooflagellates
(B) Actinopods
(C) Foraminifera
(D) Apicomplexans
Pepsinogen is produced from
(A) Mucous cells
(B) Mucous cells
(C) Parietal cells
(D) Zymogen cells
Circulatory system is open type in all of the following except
(A) Arthropoda
(B) Gastropoda
(C) Pelecypoda
(D) Cephalopoda
Chlorophylls are found embedded in the ____membranes?
(A) Stroma
(B) Grana
(C) Thylakoid
(D) Intergrana
The one which is present in all living things
(A) Cell nucleus
(B) DNA or RNA
(C) Cell membran
(D) Vacuole
About __________ of the body weight of a mammal is water ?
(A) 60%
(B) 65%
(C) 70%
(D) 75%
______________ 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
The molecules of living matter that provide building blocks are mostly based on
(A) Carbon
(B) Nitrogen
(C) Hydrogen
(D) Ammonia
In plants there are_______basic types of tissues?
(A) 2
(B) 3
(C) 4
(D) None of these
The type of plastids which help in pollination is
(A) Chromoplasts
(B) Leucoplasts
(C) Chloroplasts
(D) All of these
How many species of ascomycota occur in lichen symbiotic association?
(A) 30%
(B) 40%
(C) 50%
(D) 60%
Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of special hyphal tips called
(A) Mildew
(B) Constricting ring
(C) Haustoria
(D) All of these
At the induction of action potential opening of Na+ gate with influx of Na+ is a ___________ processes?
(A) Active transport
(B) Passive transport
(C) Diffusion
(D) none of these
___ are needed as a source of energy for the vital activities of the body?
(A) Calcium
(B) Iron
(C) Water
(D) Carbohydrates
The zygote formed in liverworts is
(A) Unicellular
(B) Mulicellular
(C) Multinucleate
(D) None of these
Ribonucleo-protein particles are the name of
(A) DNA
(B) Nucleus
(C) Eukaryotic ribosomes
(D) RNA
Parasites capable of living independently of its host at times is called as ___________ parasite?
(A) Obligate
(B) Strict
(C) Facultative
(D) Endoparasite
All of the following are true for Platyhelminthes except
(A) Flatwarms
(B) Triploblastic
(C) Coelomate
(D) Bilateral symmetry
Helical structure is kept by the formation of _________ bonds among amino acids molecules?
(A) H bonds
(B) Disulphide Bond
(C) Ionic bond
(D) Hydrophobic bonds
Sperms released in water are carried to the mesenchyme in sponges by
(A) Amoeboid cell
(B) Stipules
(C) Spicules
(D) Spines
Red to orange pigments are
(A) Carotenes
(B) Carotenoids
(C) Xanthophylls
(D) Chlorophyll
Coelom is lined by
(A) Parietal mesoderm
(B) Visceral mesoderm
(C) Mesoderm
(D) Both A & B
In most triploblasts after embryonic development the three layers are represented as
(A) Separate layers of cells
(B) Structures formed from them
(C) Structures associated with them
(D) Their functions in body
Smallest disease causing agents in plants are ?
(A) virion
(B) mycoplasma
(C) viroids
(D) prions
In which of the following pigments major energy reserves and cell wall are like plants?
(A) Chlorophyta
(B) Rhodophyta
(C) Phaeophyta
(D) Chrysophyta
Body is globular in
(A) Cake urchin
(B) Sea Urchin
(C) Sea cucumber
(D) Brittle star
C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents
(A) Photosynthesis
(B) Aerobic respiration
(C) Anaerobic respiration
(D) Respiration
Sex pill is formed in which of the following processes?
(A) Binary fission
(B) Mitosis
(C) Sexual reproduction
(D) Conjugation
Membranes of the grane are sites where?
(A) Oxygen is stored
(B) Food is stored
(C) Sunlight is trapped
(D) CO2 is stored
The structure which has been formed or modified from gill pouches in humans is
(A) Gills
(B) Eustachian tube
(C) Middle ear
(D) Lungs
Stomata open due to _________ of K+ into the guard cells from the surrounding epidermis
(A) Diffusion
(B) Active transport
(C) Osmosis
(D) All of these
Cuticular transpiration is _____________ of total transpiration?
(A) 1-2%
(B) 3-4%
(C) 5-7%
(D) 90%
The productivity of aquatic ecosystem is basically determined by light and
(A) CO2
(B) O2
(C) Water
(D) Nutrients
The productivity of aquatic ecosystem is basically determined by light and
(A) CO2
(B) O2
(C) Water
(D) Nutrients
The major cell infected by the HIV is lymphocyte ?
(A) helper-T
(B) helper-B
(C) Both T and B
(D) None of these
Lenticels look like
(A) A big pore
(B) Stoma
(C) Sponge
(D) Cars or small protusions
Protein subunits of capsid is called the capsomeres is a characteristic of each virus. Their number in Herpes virus is
(A) 162
(B) 1000
(C) 172
(D) 152
Simple breaking of mycelium resulting in formation of a new mycelium from each broken segments is called
(A) Sporing
(B) Conidiation
(C) Budding
(D) Fragmentation
enzyme is
(A) bio catalyst
(B) hormone
(C) Gland
(D) None of these
Scurvy and beri – beri and caused by the deficiency of
(A) Vitamin B and C
(B) Vitamin B and D
(C) Vitamin C and B
(D) Vitamin A and B
Light reaction takes place on/in
(A) Thylakoid
(B) Storma
(C) Chloroplast
(D) Grana
The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by_
(A) Environmental biologist
(B) Paleontologist
(C) Marine biologist
(D) Social biologist
PS I has chlorophyll a molecule which absorbs maximum light of _________ nm ?
(A) 600
(B) 650
(C) 680
(D) 700
How many carbon atoms are required to form a furan ring (ribofuranose)
(A) 3
(B) 4
(C) 5
(D) 2
Of the following, which one is missing in herbivores
(A) Premolars
(B) Canines
(C) Incisors
(D) Molars