A phosphoglyceride is always composed of
1.only an unsaturated fatty acid esterified to a glycerol molecule to which a phosphate the group is also attached
2. only a saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
3. an unsaturated or saturated fatty acid esterified to a phosphate molecule to which a glycerol molecule is also attached
4.an unsaturated or saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
Animal cells are interconnected by
1.Plasma membrane
2. Cell wall
3.Desmosomes
4.Plasmodesmata
 An example of ____________ is Carnauba wax
1.Soft wax
2.Liquid wax
3.Hard wax
4.Archaebacterial wax
 Carbon dioxide is not released in which of the following processes?
1.Lactate fermentation
2.Alcoholic fermentation
3.Aerobic respiration in animals
4.Aerobic respiration in plants
 During which stage of the purification of the sewage water are microbes used?
1. Primary treatment
2. Secondary treatment
3.Tertiary treatment
4.Both (1) and (2)
 In fats, the number of OH groups can be expressed as
1. Reichert-Meissil number
2.Polenske number
3. Iodine number
4.Acetyl number
 In Swiss cheese, big holes are made by a
1. bacterium producing methane gas
2.machine
3.fungus releasing a lot of gases while its metabolic activities
4. bacterium producing large quantities of carbon dioxide
 Rancidity of lipids of lipid-rich foodstuff is because of
1. Reduction of fatty acids
2. Hydrogenation of unsaturated fatty acids
3. Dehydrogenation of saturated fatty acids
4.Oxidation of fatty acids
 There are several variations of Down syndrome with Trisomy 21 accounting for close to 95% of all cases recorded. There is another form of the syndrome that occurs when a segment of the 21st chromosome detaches to attach itself to another chromosome. Its name is
1.Displacement
2.Transportation
3. Translocation
4.Relocation
 This amongst the following statements is incorrect. Human spermatozoa usually
1.moves with the help of their tails
2. contains enzyme in their head which aids in penetration of the ovum
3. are released in large numbers after a few days of abstinence
4.at a concentration of 1 million/ml of ejaculate will fertilize the ovum
 This cell is the longest in the human body
1.Muscle cells
2.Nerve cells
3. Bone cells
4.Gland cells
Beta-oxidation of fatty acids occurs in
1.Peroxisome
2.Peroxisome and Mitochondria
3.Mitochondria
4.Peroxisome, Mitochindria and ER
For the production of ethanol, the most common substrate used in distilleries is
1. Soya meal
2.Molasses
3.Ground gram
4.cornmeal
In C3 and C4 plants, primary carboxylation takes place with the help of
1. PEP carboxylse and pyruvate carboxylase
2.RuBP carboxylase and PEP carboxylase
3.PEP carboxylase and RuBP carboxylase
4.RuBP carboxylase and pyruvate carboxylase
In spermatogenesis, the phases of maturation involve
1.formation of spermatids from primary spermatocytes through meiosis
2.Growth of spermatogonia into primary spermatocytes
3. formation of spermatogonia from gonocytes through mitosis
4. formation of oogonia from spermatocytes through meiosis
In the rainy season, doors get swelled up due to
1.Transpiration
2.Imbibition
3.Diffusion
4.Respiration
 The chances of an offspring to have Down syndrome __________ with the mother’s age
1. Decreases
2. Increases
3. is not influenced
4. there is no correlation
Macromolecule chitin is
1. phosphorous containing polysaccharide
2.nitrogen containing polysaccharide
3. sulphur containing polysaccharide
4.simple polysaccharide
Peroxisomes are involved in which type of reactions pertaining to plant photosynthesis?
1.Calvin Cycle
2.Glycolytic cycle
3.Glyoxylate cycle
4.Bacterial photosynthesis
Polar bodies are formed during
1.Oogenesis
2. Spermatogenesis
3.Gametogenesis
4.Spermateleosis
The abundantly distributed enzyme in germinating seeds and adipocytes is
1.Lipase
2. Proteases
3.Cellulase
4.Nuclease
The acrosome of sperm is formed from
1.Mitochondria of spermatid
2. Golgi complex of spermatid
3.Nucleus of spermatid
4.Centrosome of spermatid
The actual genetic section of sperm is its
1.Acrosome
2.Tail
3. Middle piece
4.Head
The Cell theory is not applicable to
1.Fungi
2.Algae
3.Virus
4. Microbes
The degree of unsaturation of lipids can be measured as
1.Iodine number
2. Saponification number
3. Reichert Meissel number
4. Polenske number
The fundamental feature of Kranz Anatomy of C4 plants is
1. Presence of agranal chloroplasts in bundle sheath cells and granal chloroplasts in mesophyll cells
2.Presence of granal chloroplasts in bundle sheath cells and agranal chloroplasts in mesophyll cells
3.Presence of chloroplasts in epidermal and mesophyll cells
4. Presence of agranal chloroplasts in both mesophyll and bundle sheath cells
The main difference between human cheek cells and onion peel cells is
1.Presence of cell wall in onion peel cells
2. Presence of mitochondria in onion peel cells
3.Absence of endoplasmic reticulum in cheek cells
4.Absence of the plasma membrane in cheek cells
The most abundant protein in the animal world is
1.Trypsin
2.Collagen
3.Haemoglobin
4.Insulin
The number of spermatozoa, a single primary spermatocyte finally produced in spermatogenesis is
1.2
2.4
3.6
4.8
The organelle serving as a primary packaging area for molecules that will be distributed throughout the cell is
1.Vacuole
2.Plastids
3.Mitochondria
4. Golgi apparatus
The process of spermatogenesis is induced by
1.TSH
2. FSH
3. MSH
4. ACTH
The specific gravity of lipid is
1.1.5
2.1
3.0.8
4. 0.2
The statement which is incorrect with respect to enzyme action is
1.Addition of a lot of succinates does not reverse the inhibition of succinic dehydrogenase by malonate
2. the substrate binds with the enzyme as its active site
3. a non-competitive inhibitor binds the enzyme at a site distinct from that which binds the substrate
4.malonate is a competitive inhibitor of succinic dehydrogenase
This cell organelle does not contain DNA
1.Nucleus
2. Mitochondria
3.Lysosomes
4. Chloroplast
This happens during spermatogenesis
1.Meiosis
2. Mitosis
3.Meiosis and mitosis
4. None of these
This is a good producer of citric acid
1.Aspergillus
2.Clostridium
3. Saccharomyces
4. Pseudomonas
This is a wrongly matched pair
1.Alcohol – Nitrogenase
2.Detergents – Lipase
3.Textile – Amylase
4.Fruit juice – Pectinase
This is an example of derived lipids
1.Terpenes
2.Steroids
3. Carotenoids
4. All of the above
This is chiefly produced by the activity of an anaerobic bacteria on sewage
1. Laughing gas
2.Propane
3.Mustard gas
4.Marsh gas
This is not a biofertilizer
1.Agrobacterium
2.Nostoc
3.Rhizobium
4.Mycorrhiza
This is not an example of performing biological control of diseases/pests using microbes
1. Trichoderma sp. against some plant pathogens
2.Nucleopolyhedrovirus against insects and other arthropods
3. Ladybird beetle against aphids
4. Bt-cotton to increase yield
This jellylike substance inside the plasma membrane in which all cell organelles are floating is
1. Cytoplasm
2. Tonoplasm
3. Karyoplasm
4.Cell sap
This molecule acts as molecular chaperones to assist the folding of proteins
1.Vitamins
2. Carbohydrates
3.Amides
4.Lipids
This statement regarding enzyme inhibition is correct
1. non-competitive inhibitors often bind to the enzyme irreversibly
2.non-competitive inhibition of an enzyme can be overcome by adding a large amount of substrate
3.competitive inhibition is observed when substrate and inhibitor compete for the active site on enzyme
4.competitive inhibition is observed when substrate competes with an enzyme to bind to an inhibitor protein
This structure of the plant cell is non-living
1. Nucleus
2.cell wall
3.cytoplasm
4.Mitochondrion
This tissue includes the blood tissue
1.Muscle tissue
2.Connective tissue
3. Epithelial tissue
4.Nervous tissue
What does a high value of BOD(Biochemical Oxygen Demand) indicate?
1. That water is pure
2. that water is less polluted
3.that water is highly polluted
4. that consumption of organic matter by microbes is higher in the water
Which of the following cells is immortal?
1.Glomerular cells
2. Somatic cells
3.Cells of pituitary
4.Germ cells
Which of these is not a lipid?
1.Fats
2. Oils
3.Proteins
4. Waxes
Which of this is/are examples of an organ containing a smooth muscle
1.Iris of eye
2.Bronchi only
3.Uterus only
4.All of the above