MDCAT Practice Tests
Biology Practice Test 3
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Category: Biology Ch 6 Class 11
The first simplest oxygen producing organism:
NUMS 2016BiologyKingdom ProkaryoteElimination Tool:
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Category: Biology Ch 13 Class 11
Four plants are present in different environmental conditions. Plant A is present in a warm climate with continuous rainfall, plant B is present in a cool forest, plant C is present in a warm climate with little breeze, while plant D is present in a warm climate with high wind speed. Which one of the above plants will have the highest rate of transpiration?
UHS 2019BiologyGaseous ExchangeElimination Tool:
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Category: Biology Ch 2 Class 11
Lecithin is formed by combining phosphatidic acid with ______:
NUMS 2020BiologyBiological MoleculesElimination Tool:
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Category: Biology Ch 3 Class 12
Four events in the transmission of nerve impulses across synapses are:
I. depolarisation of the presynaptic membrane
II. propagation of postsynaptic action potential
III. reabsorption of the transmitter substance
IV. release of transmitter substance into the synaptic cleft
In which sequence do these events occur?
FIRST -> LAST
NTS 2014BiologyCoordination and ControlElimination Tool:
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Category: Biology Ch 7 Class 11
Lime stone deposits are formed from
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Category: Biology Ch 9 Class 11
Which one of the following types of cell are found in secondary xylem of angiosperms?
NTS 2015 DUHS and JSMUBiologyKingdom PlantaeElimination Tool:
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Mosses are included in sub-division
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5 different amino acids, numbered 1, 2, 3, 4, and 5, below from the following sequence in the path of a polypeptide chain:
Messenger RNA codon, which correspond to the amino acids, are:amino acid 1 UGU
amino acid 2 GAU
amino acid 3 CAC
amino acid 4 UAG
amino acid 5 AAG
Which one of the following DNA bases sequences could provide the code for the given section of the polypeptide?
NTS 2015 DUHS and JSMUBiologyBiological MoleculesElimination Tool:
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_____ are more common in human males and females.
NUMS Mock 3BiologyVariation and Genetics
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Category: Biology Ch 10 Class 12
Genetic equilibrium is a:
NTS 2019BiologyEvolutionElimination Tool:
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Brown algae are also known as
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The system involved in preparing our body in condition of stress and emergency:
NUMS Mock 2BiologyCoordination and Control
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Category: Biology Ch 8 Class 11
Yeasts, the unicellular fungi belongs mostly to the group:
UHS 2018BiologyKingdom FungiElimination Tool:
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Category: Biology Ch 3 Class 11
Which of the following statements is incorrect?
PMC Sample 1BiologyEnzymesElimination Tool:
15 / 100
Gram negative bacteria are stained pink by the use of:
16 / 100
Category: Biology Ch 14 Class 11
The cells which play a very important role in developing immunity are:
NUMS 2020BiologyTransportElimination Tool:
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Photosystems are located in _
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Q.8 The neurons responsible for everything various external stimuli that come from the environment into corresponding internal stimuli is called:
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Enzymes work by lowering the ______ of the reactions they catalyse:
NUMS Mock 4BiologyEnzymes
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Q.61 Herbivores always occupy :
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The passageways of the respiratory system have mucous secreting cells called:
NUMS Mock 3BiologyGaseous Exchange
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Q.19 Sm0oth endoplasmic reticulum is abundant in which types of cells?
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An activated enzyme consisting of polypeptide chain and a cofactor is called:
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Category: Biology Ch 4 Class 12
During birth, central nervous system of infants can be damaged by
PMC Sample 3BiologyReproductionElimination Tool:
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Category: Biology Ch 5 Class 11
The viruses are:
NTS 2011BiologyBio-diversity | Variety of LifeElimination Tool:
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Category: Biology Ch 5 Class 12
A bean seed contains all of the following except:
NTS 2012BiologyGrowth and DevelopmentElimination Tool:
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Category: Biology Ch 4 Class 11
Fibers of the extracellular matrix are attached to ______ in the plasma membrane:
NUMS 2020BiologyCell Structure and FunctionElimination Tool:
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Category: Biology Ch 8 Class 12
Continuous variations in a population were first observed by:
NUMS 2015BiologyVariation and GeneticsElimination Tool:
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Nitrogen-cycle is facilitated by ______.
NUMS Mock 3BiologyEcosystem
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Which of the following group represent pathological fungi?
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Category: Biology Ch 7 Class 12
From each pair of centrioles ________ sets of microtubules originate
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Interphase is a phase of the cell cycle defined only by the absence of _______.
NTS 2019BiologyCell CycleElimination Tool:
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While working in a laboratory, before studying a sample under the microscope, it was immersed in a dye solution to obtain ______.
NUMS Mock 1BiologyBiology and its Major Fields of Specialization
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Which of the following is correct in humans?
NUMS Mock 1BiologyReproduction
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When the concentration of the external medium is equal to the concentration of the internal medium of a cell, the situation is called:
NUMS 2017BiologyBiological MoleculesElimination Tool:
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Which of the following is NOT the function of cell membranes?
NTS 2018BiologyCell Structure and FunctionElimination Tool:
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The directional movement toward or away from the stimulus is called:
PMC 2020BiologyCoordination and ControlElimination Tool:
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Which of the following blood transfusions can be made safely?
NUMS Mock 2BiologyVariation and Genetics
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The primary oocyte in mammals has which of the following structures around it:
NUMS 2014BiologyReproductionElimination Tool:
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Percentage of proteins in cell membrane is
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Antibodies can be digested by using which of the following types of enzymes?
PMC Sample 3BiologyEnzymesElimination Tool:
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Category: Biology Ch 2 Class 12
The movement of plants in response to touch stimulus is called:
NTS 2012BiologySupport and MovementElimination Tool:
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An Rh negative woman is married to an Rh positive man whose father was also Rh negative. What are the chances that their child will be affected?
NTS 2016 SMBBMCBiologyVariation and GeneticsElimination Tool:
44 / 100
Category: Biology Ch 13 Class 12
Conversion of ammonium into nitrates is:
UHS 2018BiologyMan and His EnvironmentElimination Tool:
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Category: Biology Ch 1 Class 12
When a frog is kept in water for some time it sheds a thin covering of skin called ____
NUMS 2014BiologyHomeostasisElimination Tool:
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Category: Biology Ch 6 Class 12
Which of the following statements correctly describes homologous chromosomes?
NTS 2016 DUHS & JSMUBiologyChromosomes and DNAElimination Tool:
47 / 100
Which of the following statement about conifers is correct?
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If the concentration of enzyme is kept constant and amount of substrate is increased a point is reached where increase in substrates concentration does not affect the reaction rate because of
49 / 100
Category: Biology Ch 12 Class 11
Intrinsic factor is secreted by:
NUMS 2020BiologyNutritionElimination Tool:
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Q.57 Which of the following is paired correctly?
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Which statement is incorrect about Lock and Key Model?
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Q.50 The cluster of pouches opened from alveolar ducts is known as
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What is the size of Parvovirus?
NUMS Mock 4BiologyBio-diversity | Variety of Life
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Category: Biology Ch 10 Class 11
Of the following which one is not the characteristic of Kingdom Animalia.
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Which processes are essential in making nitrogen from dead plant material available to growing plants?
ammonificationdeaminationnitrificationnitrogen fixationNUMS Mock 2BiologyMan and His Enviornment
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Of the following which one is non-cellular in most cases in animals?
57 / 100
Bryophtes are called amphiabians of plant world because
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Sunken stomata are found in:
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The disease that arises due to increasing age is:
NTS 2018BiologyGrowth and DevelopmentElimination Tool:
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Dermal and denticle scales of fishes are called:
NUMS 2015BiologySupport and MovementElimination Tool:
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The prolactin hormone, responsible for the activation of mammary glands to start producing milk, is a hormone of the:
NTS 2010BiologyCoordination and ControlElimination Tool:
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Q.36 Parkinson’s disease is caused by cell death, which produces ____________.
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Consider the following statements about biological communities.
I. Their members share a common gene pool
II. The community remains stable even though some physical aspect of the environment may undergo a change
III. It consists of all the populations living in a particular area.
IV. A community interacts with a non-living environment and both function together to form an ecosystem
Which two of the above statements are true?
NTS 2014BiologyEvolutionElimination Tool:
65 / 100
Category: Biology Ch 9 Class 12
Vaccination can be done against:
NUMS 2015BiologyBiotechnologyElimination Tool:
66 / 100
Category: Biology Ch 12 Class 12
Which statement about profundal zone is correct?
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The inhibitor which closely resembles the substrate in its molecular structure and inhibits the enzyme activity by binding to the active site of the enzyme is called:
NTS 2013BiologyEnzymesElimination Tool:
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Translocation of organic solutes in plants takes place through:
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Smaller the animals:
NUMS 2014BiologyGaseous ExchangeElimination Tool:
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All of the following hormones are secreted from anterior lobe of pituitary gland BUT:
NUMS 2019 ReconductBiologyCoordination and ControlElimination Tool:
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70S sized ribosomes are found in the cytoplasm of:
PMC 2020BiologyCell Structure and FunctionElimination Tool:
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Category: Biology Ch 11 Class 12
Diverse and stable community at the end of succession is
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The massive accumulation of blood with is a tissue is called as:
NTS 2011BiologyTransportElimination Tool:
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In gametogenesis, which resultant product is non-functional?
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The only promoter of leaf senescence in the following plant hormones is?
PMC Sample 3BiologyGrowth and DevelopmentElimination Tool:
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Q.36 The ETC in plants consists of an electron carrier called?
78 / 100
Reactions in which simple substances are combined to form complex substances are called:
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The ecological role of fungi as decomposers is paralleled only by
UHS 2010BiologyKingdom FungiElimination Tool:
80 / 100
Choose the correct combination:
NUMS 2019 CancelledBiologyEvolutionElimination Tool:
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Vertebrae of the neck are called:
NUMS 2020BiologySupport and MovementElimination Tool:
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Category: Biology Ch 11 Class 11
Glucose → 2 pyruvic acid + 2H2O
2ADP + 2Pi → 2 ATP
2NAD + 4H → 2NADH + 2H+
These three reactions collectively constitute ______.
NTS 2012BiologyBioenergeticsElimination Tool:
83 / 100
The place of attachment of leaf with the shoot is called:
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Q.27 During which of the following levels of biological organization can natural selection occur?
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Q.27 The stimulus for the production of more gastrin hormone from the gastric endocrine lining is:
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The reaction involved in chemotrophic nutrition is:
NTS 2010BiologyNutritionElimination Tool:
87 / 100
All the animals of the grade radiata are
88 / 100
Kingdom protista includes ______ phyla
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Which one of the following is different from all the rest regarding the number of cells inits body?
90 / 100
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Why do Bryophytes and ferns both require water for fertilization?
NUMS 2015BiologyKingdom PlantaeElimination Tool:
92 / 100
The number of base pairs in a complete helical turn is/are:
NUMS 2020BiologyChromosomes and DNAElimination Tool:
93 / 100
Plasticity of cell wall increases during
94 / 100
NUMS Mock 1BiologyBiological Molecules
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Why cannot viruses replicate on their own?
NUMS Mock 2BiologyVariety of Life
96 / 100
Golden rice is a promising transgenic crop. When released for cultivation, it will help in
PMC Practice 11BiologyBiotechnologyElimination Tool:
97 / 100
The element in basic structure of proteins which differentiate them from carbohydrates is?
98 / 100
Exposure to ______ light is effective in photosynthesis as it enables guard cells to take up K+ and opening of stomata.
NUMS 2019 ReconductBiologyBioenergeticsElimination Tool:
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Q48 Which statement is incorrect about Lock and Key Model?
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Which chemical component has the greatest contribution in the total mammalian cell weight?
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The average score is 62%