MDCAT BIOLOGY PLP-22 (SMART INSTITUTE)
1-In parthenocarpy which levels are high in ovaries?
Gibberellins
Cytokinins
Auxins
All of these
2-Genes evolve due to which of the following?
Artificial selection
Random selection
Gene selection
Natural selection
3-Lipids show solubility in which of the following solvents?
Water
Ether
Inorganic solvents
All solvents
4-Resolution of human eye is
2.0 micro m
2.0 mm
1.0 micro m
1.0 mm
5-Protein coat of a virus enclosing nucleic acid is called?
Vector
Capsid
Plasmid
Genome
6-Allosteric enzymes consists of multiple
Inhibitors
Polypeptide chains
Active sites
Temperature ranges
7-Of the following which one is not included in protostomes?
Arthropods
Hemichordates
Annelids
Molluscs
8-Photosystems are located in
Stroma
Chloroplast envelop
Thylakoid membrane
The integrana
9-The animals in which coelom is formed due to splitting of mesoderm are known as which of the following?
Pseudocoelom
Enterocoelous
Amphicoelous
Schizocoelus
10-In bacterial categories the bacteria smaller in number are which of the following?
Gram negative bacteria
Gram positive bacteria
Eubacteria
Ancient bacteria
11-Which of the following is true of troponin and tropomyosin?
Troponin binds to myosin and tropomyosin binds to actin
Tropomyosin binds to actin and prevents the myosin head from binding to actin
Both a and b
None
12-Mating with non-relatives is known as
Inbreeding
Outbreeding
Breeding
None of these
13-Lymphatic system consists of all the following except
Lymph nodes
Blood
Lymphatic vessels
Lypmh
14-The gap in the myelin sheath between adjacent schwann cells is called
Dendrite
Soma
Node of ranvier
Stroma
15-Which two reactions occur during photophosphorylation
ATP is hydrolysed and NADP is reduced
ATP is hydrolysed and NADPH is reduced
ATP is synthesized and NADP is reduced
ATP is synthesized and NADPH is oxidised
16-Smallpox was caused by which virus
Adenovirus
Pox virus
Influenza virus
Variola virus
17-Polymorphism is a characteristic feature of which group of animals?
Cnidaria
Annelida
Platyhelminthes
Echinodermata
18-Which of the following structures helps cyanobacteria to move?
Flagella
Capsule
Gas vesicles
All of these
19-The soluble part of the cytoplasm is known as
Cytosol
Polysome
Cisternae
Chitin
20-A gas absent during pre-brotic environment was
SO2
CO2
NH3
H2
21-Cancer expands systematically by
Locally
Systemic
Metastasis
Invasion
22-The controlling function of hypothalamus is
Swallowing
Vision
Memory
Water balance
23-Binary fission occurs in which stage of the bacteriophage life cycle
Lysogenic cycle
Lytic cycle
Both
None
24-In which of the following cases, genotypic and phenotypic ration will remain same in F2 generation
Law of independent assortment
Law of segregation
Test cross
Incomplete dominance
25-Choose the function irrelevant to oral cavity
Grinding
Lubrication
Absorption
Digestion
26-Which one of the following is not part of the female reproductive system
Ovary
Vagina
Urethra
Prostate gland
27-These are biologically active proteins .....
Glycoprotein
Enzymes
Activators
Inhibitors
28-A human female produce how many oocytes in each of her ovary
30,000
200000
300000
20000
29-Which of the following is found beneath the prostate gland
Vas deferens
Seminal vesicle
Urethra
Cowpwer's gland
30-The effect of competitive inhibitor on enzyme activity is such that it affects which of the following
Increase enzyme activity
Does not change enzyme activity
Decreases enzyme activity
None of these
31-Filial is a Latin word. It means which of the following?
Spring
Issue
Progeny
None of these
32-The reaction of carbon dioxide and RUBP is catalyzed by
ATP synthase
Globulin
Rubisco
NADH dehydrogenase
33-The cerebrospinal fluid is similar in composition to
Amniotic fluid
Pleural fluid
Synovial fluid
Blood plasma
34-Tropomyosin binds to ..... And prevents to the myosin from sliding up the actin filament
Myosin
Actin
Myosin filament
Both b and c
35-The position of a gene on chromosome is called
Locus
Arm
Position
Location
36-Which of the following will not survive in the presence of oxygen
Constitutive anerobe
Facultative anerobe
Constitutive aerobe
Obligate anaerobe
37-The primary function of co-factor is to
Assist in enzyme synthesis
Assist in enzyme inhibition
Assist in enzyme activity
Both a and b
38-The covalent bond between two monosachride subunits is called
Phosphodiester bond
Peptide bond
Ionic bond
Glycosidic bond
39-Which viruses can convert normal cells into cancer cells
Retrovirus
Adenovirus
Poliovirus
All
40-The brian is mainly divided into.....parts
2
3
4
5
41-Circulatory system is open type in all of the following except
Arthropoda
Gastropoda
Pelecypoda
Cephalopoda
42-What is the approximate diameter of retroviruses
150 nm
100 nm
200 nm
250 nm
43-Which type of evolution is represented by analogous organs
Divergent evolution
Straight evolution
Zig-zag evolution
Convergent evolution
44-Which cells absorb carbon dioxide in the leaf
Neutrophil cells
Basophil cells
Mesophyl cells
All of these
45-Which one of the following animals is not a tetrapod?
Snake
Cow
Mantis shrimp
All of these
46-These animals have three germinal layers but no coelom
Flatworms
Round worms
Cnidarians
Chordates
47-The nerves that are responsible for innervating muscle fibers called
Sensory nerves
Motor neurons
Cranial nerves
Optic nerve
48-The mobility of integral proteins can be measured by physical state of which of the following
Amino acids
External phospholipids
Membrane phospholipids
Membrane appendages
49-Vertebrates are evolutionarily adapted to terrestrial life. Which one of the folllowing adaptations is least likely to contribute to this land-based predominance?
Internal fertilization
Impermeable outer skin
Development of legs
Short loops of henle
50-Pidgeon, platypus and panda are all representatives of which of the following
Homeothermic
Hyperthermic
Poikilothermic
None of these
51-Which fluid bathes the neurons of brain and spinal cord and cushions against the bumps and jolts?
Blood
Interstiatial fluid
Intracellular fluid
Cerebrospinal fluid
52-Which one of the following is least likely to occur in a boy during puberty
His voice deepens
Hair grows on the chest and under the arms
Sperms start to be produced
His hair turn grey
53-It uses the single strand RNA as a template for making double stranded DNA
DNA polymerase
DNA ligase
Reverse transcriptase
All of these
54-Which of the following is most responsible for bacterial cell motility
Cilia
Flagella
Pili
Pseudopodia
55-Growth and development of plant cells is the role of?
Parenchymatous cells
Chlorenchmatous cells
Meristematic cells
Sclerenchymatous
56-Which of these is common to both lymph vessels and veins?
Both have small bore
Both have valves
Both have low blood pressure
Both are communicated
57-When a female ovulates, in what phase of division is the oocyte?
ANAPHASE-I
PROPHASE-1
METAPHASE-I
METAPHASE-II
58-Phosphofructokinases enzyme converts fructose-6-phosphate into .........
Fructose -,4-phosphate
Fructose-1,6-bisphosphate
Bisphosphate
Fructose
59-The part of spinal cord where interneurons present is called
White matter
Gray matter
Lumbar enlargement
Cervical enlargement
60-Saponification number referred as
Mg of KOH required to saponify one gm of fat or oil
Mg of KOH required to neutralize free fatty acids
Mg of KOH required to neutralize the acetic acid
None of these
61-Which of the following cell structure contains the highest concentration of RNA
CENTRIOLE
NUCLEUS
NUCLEOLUS
MITOCHONDRION
62-Virus can bud from
RER
Golgi complex
Nuclear envelop
All of these
63-In most triploblastic after embryonic development, the three layers are represented as
Their functions in the body
Structure associated with
Separate layers of cells
Structure formed from them
64-Aman expresses a certain X-linked recessive genetic disorder. Which of the following must be true
His mother expresses the disorder
His father passed on the allele for the disorder
His mother passed on the allele for the disorder
None
65-Functioning of enzymes include all of the following except which of the following
Lessening the time required for a reaction to take place
Shifting substrates into more favourable positions in the active site
Decreasing the activation energy of a reaction
Shifting the equilibrium of a reaction
66-The function of coelom is best characterized as
To increase the size of the animals
To help in the functioning of the reproductive system
To provide space for the development of organa and systems
None of these
67-An example of convergent evolution is best represented by which of the following?
Teeth of domestic dog, teeth of a wolf
Wing of geospiza magnirostris, wings of geospiza fortis
Wing of Hawkmonths, the wing of hawks
All of these
68-Which of the following is incorrect for ascent of sap
Water potential
Cohension tension
Root pressure
Imbibition
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