Biology Quiz on Biomolecules

The living matter is composed of mainly six elements: carbon, hydrogen, oxygen, nitrogen, phosphorus and sulphur. These elements together constitute about 90% of the dry weight of the human body. Chemicals or molecules present in the living organisms are known as biomoleculesDepending upon their weight and solubility biomolecules fall into two categories: micromolecules and macromolecules. Micromolecules may be inorganic or organic and include water gases, minerals, sugars, amino acids, and nucleotides. Macromolecules generally belong to four classes of organic compounds: carbohydrates, lipids, proteins and nucleic acids.
Biology Quiz on Biomolecules
1. Lactose is composed of
glucose and galactose
fructose and galactose
glucose and glucose
glucose and fructose
2. Lipids are insoluble in water because lipid molecules are
neutral
zwitter ions
hydrophobic
hydophilic
3. In which of the following groups are all polysaccharides?
sucrose, glucose and fructose
maltose, lactose and fructose
glycogen, sucrose and maltose
glycogen, cellulose and starch
4. Modern detergents contain enzyme preparations of
alkaliphiles
acidophiles
thermoacidophiles
thermophiles
5. The numbers of molecule of fatty acid present in one molecule of fat is
1
2
3
4
6. The elements that make up 99% of all elements found in living system
C, H, O
C, H, O, N
C, H, O, N, P
C, H, O, P
7. Excess protein, carbohydrate and fats are stored in body as
fat
glycogen
starch
ATP
8. Which of the following substance is required for the normal functioning of the enzymes?
apoenzyme
holoenzyme
cofactor
abozyme
9. Which of the following is a storage protein?
ferroprotein
mucoprotein
glutenins
chromoprotein
10. Protein which play a significant role in aging is
elastin
actin
collagen
myosin
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Quiz on Plant Breeding

Plant breeding proposes to obtain crops with higher yield, better quality, resistance to diseases and shorter durations which are suitable to particular environmental conditions. It involves two types of measure: initial step includes improved agricultural preparation and and improvement of crop varieties is a permanent measure  which creates genetic potentially in crop plants for higher and better yield. Scientists connected with improvement of crop varieties are called plant breeders. The science of improvement of crop varieties is termed as plant breeding. Plant breeding is an applied branch of botany and deals with the improvement of cultivated varieties (cultivars) of plants. It is the improvement in the heredity of crops and production of new crop varieties which are far better than original types in all respects. 

1. Mexican wheat variety introduced in India was
Sonora 64
Lerma Rojo 64 -A
Sonora 63
all of these
2. Alphonso and Neelam are varieties of
mango
apple
rice
ragi
3. Heterosis is
induction of mutataions
mixture of two or more traits
appearance of spontaneous mutations
superior of hybrids over their parents
4. Which of the following is a man made cereal
Triticale
wheat
rice
tomato
5. Cutting of anthers from the intersexual flowers of female parents is
male sterile line
emasculation
artificial pollination
selective or differential reproduction
6. Hybrid vigour is due to
heterosis
epistasis
complementary genes
supplementary genes
7. Centre of origin of almond and apple is
South West Asia
South East Asia
China
Asia minor and Afganistan
8. First successful pollen culture was done by
Guha and Maheshwari
Swaminathan
Steward
Haberlandt
9. Polyploidy is induced through
colchicine
ethylene
mutagenic chemicals
irradation
10. Haploid plants can be obtained by culturing
pollen grains
root tips
young leaves
endosperm
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Characteristics of Protista - Quiz on Protozoa

The organisms included in protista represents diverse ways of life. Many are photosynthetic autotrophs. They are collectively known as phytoplankton or microscopic, floating photosynthetic organisms. Protists (Protozoa) showing following characteristics:
a. Protists include solitary unicellular or colonial unicellular eukaryotic organisms which do not form tissues.
b. Simple multi nucleate  organisms or stages of life cycles occur in a number of groups.
c. The organisms possess nuclear membranes and mitochondria.
d. In many forms plastids, (9+2 strand) flagella and other organelles are present.
e. The nutritive modes of these organisms include photosynthesis, absorption, ingestion and combination of these.
f. Their reproductive cycles typically include both asexual divisions of haploid forms and true sexual processes with karyogamy and meiosis.
g. The organisms move by flagella or by other means or are non motile.


1. Function of contractile vacuole in protozoa is
osmoregulation
locomotion
respiration
digestion of food
2. Which is Photosynthetic protozoa?
Euglena
Paramecium
Plasmodium
Trypanosoma
3. Which class of protozoa is totally parasitic?
sporozoa
mastigophora
flagellata
sarcodina
4. Protozoans lack which of these as locomotary organs?<br> cilia
flagella
pseudopodia
parapodia
5. Which of the following protozoa is a flagellate?
Tetrahymena
Paramecium
Leishmania
none of these
6. Slipper animalcule is
Trypanosoma
Paramecium
Protozoa
Entamoeba
7. Which of the following parasite is present in the cerebrospinal fluid?
Entamoeba
Trypanosoma
Leishmania
all of these
8. All protozoans have
pseudopodia
contactile vacuole
holozoic nutrition
eukaryotic organization
9. Common feature of Euglena, Amoeba, Trypanosoma and Entamoeba is
Binary fission
multiple fission
holozoic nutrition
Contractile vacuole
10. The presence of two types of nuclei, a macroncleus and a micronucleus, is characteristic of protozoans. these ar e grouped under the class
sarcodina
flagellata
sporozoa
ciliata
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Animal Tissue Quiz

Animal Tissue Quiz
A tissue is a group of cells similar in origin to perform a specific function. Cells of a tissue are often held together by cell junctions. The word tissue was used by Bichat. There are four types of animal tissues namely epithelial tissue, connective tissue, muscular tissue and nervous tissue. 
1. Epithelial tissue
    Function: Protection, absorption, secretion, excretion and reproduction 
2. Connective tissue
    Function: Attachment, storage, support, protection and transport
3. Muscular tissue
    Function: Movement of body parts and locomotion.
4. Nervous tissue
    Function: Control and coordination by nerve impulse
1. Compound squamous epithelium occurs in
stomach
intestine
trachea
pharynx
2. Cardiac muscles contract
quickly and do not get fatigued
slowly and get fatiqued
slowly and do not get fatigued
quickly and get fatigued
3. A tissue in which matrix is the source of structural and functional performance is
connective
epithelial
nervous
muscular
4. Epithelial tissue with thin flat cells appearing like packed tiles occurs on
inner lining of cheek
inner lining of stomach
outer surface of ovary
inner lining of fallopian tubes
5. Muscular tissue is differentiated into
striped and unstriped
cardiac and unstriped
unstriped, striated and cardiac
none of these
6. Histocyte is a connective tissue cell which takes part in
secretion
phagocytosis
matrix production
phagocytosis
7. Bundles of striated muscle fibres are enclosed in
perimysium
epimysium
endomysium
epimysium
8. Schwann cells are present around
medullaed nerve fibre
non-medullaed nerve fibre
non medullaed and medullaed nerve fibre
none of these
9. Muscles immune to fatigue are
cardiac
eye muscles
striped
unstriped
10. Germinal epithelium of ovary is formed of
columnar epithelium
stratified epithelium
cuboidal epithelium
squamous epithelium
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Quiz on Animal Kingdom

Animal Kingdom Quiz
Animals form one major group of living beings. The animal kingdom includes all animals of our world.There are about 1.5 million living species of animals. Species is the lowest rank in the hierarchy of classification and species come under the next higher level; genus, genra under family, families under order, order under class, classes under phylum and all the phyla under Animal kingdom. Animal kingdom includes Protozoa, Coelenterata, Platyhelminthes, Aschelminthes, Arthropoda, Mollusca, Echinoderma and Choradata.
1. Invertebrates constitute approximately what percentage of animal kingdom
25%
50%
75%
95%
2. An animal having diploblastic acoelomic condition is
Asaris
Sea anemone
Planaria
Periplaneta
3. Sponges are Poriferans because their bodies have
canal systems
Spicules in skeletons
several pores
none of these
4. Fire bellied toad is
Bombina
Necturus
Salamandra
Amphiuma
5. Earthworm possesses hearts
1 pair
2 pairs
3 pairs
4 pairs
6. In which of the following, notochord is present in embryonic stage?
some chordates
non chordates
all chordates
vertebrates
7. What is true for mammalia
bats have feather
elephant is ovoviviparous
diaphragm is absent in them
Platypus is oviparous
8. Tube feet are the characteristics structures of
jellyfish
starfish
cuttlefish
crayfish
9. Trachae of Cockroarch and mammal are similar in having
origin from head
paired nature
ciliated inner lining
noncollapsible walls
10. Sound box of birds is called
laryynx
syrinx
synsacrum
pygostyle
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Quiz on Cell Organelles


Quiz on Cell organelles

Organisms present in this biosphere show great diversity in size, structure and mode of life. In spite of this diversity they show unity in their basic stricture and processes. The body of an organism is formed of one or many cells. All cells are composed of a semifluid material, the cytoplasm which is enclosed by a thin coat called plasma membrane. Different subcellular component called organelles, viz., nucleus, mitochondria, golgi bodies, chloroplast, lysosomes etc are present in the cells. Striking similarities can be observed in the organelles of the cells of diverse organisms. Thus inspite of diversity, all organisms show unity in certain basic features. Read more>>
1. Lysosomes are
store house of genetic material
interconnected channels in the cytoplasm
Bags of hydrolytic enzymes
power house of the cell
2. All of the following activities are taking place inside the mitochondria, except:
Electron transport chain (ETC)
Beta oxidation of fatty acid
De novo fatty acid synthesis
Citric acid cycle
3. All of the following lipids are present in the plasma membrane, except:
Chloesterol
Triacylglycerol
Lecthin
Sphingomyelin
4. Which of the following are features of endocytosis?
LDL uptake is by endocytosis
Heparin helps in this mechanism
Plasma membrane is invaginated to form vesicles
Cytoplasmic side of vesicle is coated by clathrin filaments
5. Galactosyl transferase is a marker enzyme of
Plasma membrane
MItochondria
Golgi complex
Lysosome
6. Which of the following cellular organelle can cause autodigestion?
Lysosomes
Microsomes
Peroxisomes
Golgibodies
7. Peroxisomes are
The site of biological oxidation
involved in the production of free radicals
Concerned with drug detoxification
The site of post translational modifications
8. Which of the following are not synthesised in the endoplasmic reticulum
RNA
Lipoproteins
Ganglioside
Glycoprotins
9. Fluidity of plasma membrane depends on
membrane pumps
concentration of proteins
Glycosylation of proteins
nature of fatty acids
10. Golgi bodies are
concerned with disposal of waste products
engaged in transort of molecules into mitochondria
involved in phagocytosis
temporarary storage sites for secretory products
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Quiz on Bacteria and Viruses

Bacteria are minute and microscopic. They are the simplest organisms. Like fungi most of them are parasites and saprophytes. Some of them are however, autotrophs. There is a good deal of controversy about their taxonomic position in the living world. Bacteria comprise 2500 varieties.
Viruses  have been a highly controversial group of tiny microscopic objects which have been rightly termed the most perfect obligate parasites of the world.  They are absolutely inert outside a living host but once inside the host they are capable of growing, multiplying and undergoing even mutation. They are, therefore, supposed to represent a transitional form of life lying on the border line between the non living and the living world. 
1. Capsid is
Fungal cell wall
The protein coat of viruses
Bacterial cell wall
Virus DNA
2. An anti viral substance which prevents the synthesis of a virus in the cell is known as
Insulin
Antibody
Transferon
Interferon
3. Major stimulus for spore formation in bacteria is
Cold stress
Heat stress
pH stress
Nutrition limitation
4. Which part of the plant cannot be infected by virus
xylem
Pith
Cortex
shoot apex
5. The bacteria multiply by binary fission and requires about
10-40 seconds
20-30 hours
20-30 seconds
20-30 minutes
6. Viruses that persist in the cell and cause recurrent disease are called
Oncogenic viruses
Resistant viruses
Latent viruses
Cytopathic viruses
7. Mycobacterium tuberculosis is an intra cellular bacterium. It prefers to infect
Neutrophils
Macrophages
T cells
B cells
8. Which of the following disease caused by by Viroids?
Potato spindle tuber
Early blight of Potato
Potato leaf roll
Wart disease of Potato
9. Which of the following organism is widely used as biocontrol agent in organic farming?
Rhizobium tropici
Fusarium oxysporum
Nostoc muscorum
Trichoderma viridis
10. Who separated the protein coat virus from RNA core by chemical means?
Twort
Frankel Conrat
Nishimura
Pasterur
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