MDCAT MCQs for Entry Test Preparation

mdcat mcqs for entry test
mdcat mcqs for entry test

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MDCAT MCQs for Entry Test Preparation

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MDCAT MCQs for Entry Test Preparation

901. Arterial blood contains _________ of CO2 per 100 ml of blood

A. 54 ml
B. 60 ml
C. 64 ml
D. 50 ml

902. Active site of Rubisco is evolved to bind?

A. CO2
B. O2
C. H2O
D. All of these

903. More than ___________ compounds of tar of tobacco smoke are involved to cause cancer?

A. 5
B. 90
C. 15
D. 10

904. A disease of longs in which inside of the lungs is damaged resulting in cough and fever?

A. Lung cancer
B. Asthma
C. Emphysema
D. Pulmonary tuberculosis

905. Number of spiracles present in cockroach is___________?

A. 15
B. 10
C. 20
D. 30

906. Of the following, which one is a contagious disease?

A. Tuberculosis
B. Lungs cancer
C. Asthma
D. Emphysema

907. Number of spiracles present in the thorax of cockroach is___________?

A. 2
B. 3
C. 5
D. 4

908. Which of the following promotes growth in plants?

A. Photorespiration
B. Calvin cycle
C. Both of these
D. None of these

910. When abdomen expands, the number of spiracles open is_____________?

A. 2
B. 3
C. 6
D. 8

911. Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?

A. Cockroach
B. Earthworm
C. Aves
D. Frogs

912. The blood enters the ________________ side of heart ?

A. Posterior
B. Anterior
C. Lateral
D. All possible

913. Voice box is another name used for___________?

A. Buccal cavity
B. Pharynx
C. Larynx
D. Chest Cavity

914. All of the following contain cartilage except:___________?

A. Larynx
B. Trachea
C. Bronchi
D. Bronchioles

915. Gaseous exchange through the skin is known as ______________ respiration?

A. Cuticular
B. Cutaneous
C. Skin
D. Pulmonary

916. Respiratory distress syndrome is common especially for infants with a__________?

A. Less than 7 month
B. Less than 8 month
C. Less than 9 month
D. More than 9 month

917. Parabronchi are open at ______________ end/s?

A. Single
B. Both
C. Do not have opening
D. None of these

918. In most birds air sacs are ____________ in number?

A. 10
B. 3
C. 4
D. 9

919. Vocal cords are stretched across_______?

A. Larynx
B. Pharynx
C. Golttis
D. None of these

920. A joint formed between humerus, radius and ulna is an example of__________?

A. Immovable joint.
B. Slightly movable joint.
C. Freely movable joint.
D. Fibrous joint

921. Which of the following plays the major role in providing support to young herbaceous parts of the plant?

A. Living cells of epidermis with higher turgor pressure.
B. Living cells of cortex and pith with higher turgor pressure.
C. Collenchyma cells
D. All of these

922. Joint between two parietal bones, which is infact immovable one is an example of_________?

A. Fibrous joints.
B. Cartilaginous joints.
C. Synovial joints.
D. None of these

923. Fibrous capsule surrounding synovial joints may be thickened at some places to form:

A. Synovial membrane.
B. Ligaments.
C. Muscles.
D. Tendon

924. Higher turgor pressure in a plant cell is maintained by________________?

A. Large number of vacoules in a plant cell.
B. Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane
C. Higher osmotic pressure of the cell vacuole
D. both b and c

925. In which of the following joint muscles are arranged in the same plane as that of joint?

A. Between radius and ulna.
B. Between ulna and scapula
C. Between humerus and scapula
D. Between femur and tibia.

926. Which of the following hormone is predominantly responsible for bone weakening in older women?

A. Progesterone.
B. Oestrogen.
C. Parathyroid hormone.
D. Calcitonin.

927. Secondary cell wall of sclerenchyma cells is impregnated with_________________?

A. Cellulose.
B. Peptidoglycan and murein.
C. Lignin.
D. Pectin.

928. Which of the follwing is a childhood disease resulting from nutritive Ca2+ deficiency?

A. Hypocalcaemia Tatanic spasms.
B. Osteomalacis.
C. Rickets.
D. Tetany

929. Among the followings which is the most longest supportive cell?

A. Tracheids
B. Sclereids
C. Trachea
D. Collenchyma cells

930. Which of the following statement about osteoporosis is incorrect.

A. It results from estrogen deficiency.
B. Bone eating process takes over bone formation process.
C. There is reduction of bone mass and change in chemical composition of the matrix
D. It is common in old age.

931. An increrase in plant girth due to activity of _____________ is called secondary growth?

A. Cork cambium
B. Pith.
C. Vascular cambium.
D. Both a and c

932. Which of the following statements about fractures in old age is incorrect?

A. They are more common than in adult age.
B. Occur as a result of bone being thin and weak.
C. Due to good blood supply it results in quick healing.
D. It involves osteoblasts and osteocytes.

933. If two ends of fractured bone are opened and kept united via screws and wires drilled in bone substance. This step in fracture repair is called___________?

A. Open reduction.
B. Closed Fixation.
C. Open fixation.
D. Immobilization

934. Vascular Cambium initially appears as actively dividing cells between_________________?

A. Primary Xylem and secondary xylem.
B. Primary xylem and secondary phloem.
C. Primary xylem and primary phloem
D. Secondary xylem and secondary phloem.

935. A fracture hematoma has____________?

A. Healing properties.
B. Destructive properties.
C. Neutralizing properties.
D. Dead cells

936. Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of ____________?

A. Chemotropic movement
B. Chemotactic movement
C. Chemosastic movement
D. Haptonastic movement

937. Which of the following cells are involved in soft callus formation?

A. Fibroblast and osteoblast.
B. Osteoblast and osteoclast.
C. Osteoclast and osteocyte
D. Onteocyte and osteoblast

938. Bony callus formation completes in___________?

A. 2-3 weeks
B. 3-4 weeks.
C. 2-3 months.
D. 3-4 months.

939. The place of attachment of leaf with the shoot is called__________?

A. Pith.
B. Pit.
C. Pulvinus
D. Ecdysone

940. Which of the following is a uni-nucleated cell?

A. A smooth muscle cell.
B. A cardiac muscle cell.
C. A skeletal muscle cell.
D. All of these

941. Rapid movement of leaves of mimosa on touching is an example of _____________?

A. Turgor movement
B. Nastic movement
C. Tropic movements.
D. Growth movement

942. The contraction of which of the following muscle fibers, is controlled by hormones?

A. A smooth muscle
B. A cardiac muscle
C. A skeletal muscle.
D. All of these

943. Roots of a plant show______________?

A. Positive phototropism and negative geotropism
B. Negative phototropism and positive geotropism
C. Negative tactic movement and positive tropic movement
D. Positive geotropism of stem and roots

944. Why skeletal muscles are called striated muscles?

A. They appear darker than smooth muscles by naked eye.
B. Alternating dark and light bands appear on their surface when visualized by naked eye.
C. Alternating dark and light bands appear on their surface when visualized via a microscope.
D. All of these

945. Epinasty is controlled by_____________?

A. Gibberellins
B. Abscisins
C. Auxins
D. Cytokinins

946. Which of the following statements is incorrect about skeletal muscle fibers?

A. They are multinucleated.
B. They are 10 – 100 ?m in diameter & surrounded by sarcolemma
C. They contain O2 storing molecules called hemoglobin.
D. Their cytoplasm contains high concentration of carbohydrates

947. Gibberellins is an example of_________________?

A. Growth inhibitor
B. Growth stimulator
C. Growth hormone
D. None of these

948. A smallest contractile unit of muscle contraction called sarcomere is the area between two:

A. H- zone
B. M- Line
C. Z- Line
D. A band

949. Which of the following animal has a hydrostatic skeleton?

A. Earthworm
B. Round worm
C. Tape worm
D. Pin worm

950. Diameter of thick filament is____________?

A. 7 nm.
B. 8 nm
C. 16nm
D. 10-100 ?m.

951. In an annelids, the contraction of circular muscle results in___________?

A. Lengthening of the body.
B. Shortening of the body.
C. Widening of body
D. Thinning of body

952. The most important function of troponin is___________?

A. To bind with actin
B. To bind with tropomyosin.
C. To bind with Ca2+ ions.
D. All of these

953. Which of the following statement is incorrect about Molluscans?

A. They are surrounded by single or double pieces of hard skeleton.
B. Their shell grows as the animal grows.
C. They have hydrostatic skeleton.
D. They move by tube feet

954. If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules:

A. 9
B. 5
C. 6
D. 7

955. Which one of the following forms the blk of exoskeleton of an arthropod?

A. Epicuticle
B. Procuticle
C. Ectocuticle
D. None of these

956. What happens during muscle contraction to the length of each myosin and action filament?

A. Z- lines get closer
B. A band becomes short
C. 1 band elongates
D. There is no change in sarcomere

957. Which of the following step occurs immediately after binding of Ca2+ with troponin molecule during muscle contraction.

A. Binding sites of actin get attached to the myosin head.
B. Troponin uncovers the actin binding sites.
C. Tropomyosin gets removed from the binding sites of actin filaments.
D. Ca2+ goes back inside sarcoplasmic reticulum.

958. Exoskeleton of a marine snail is composed of________________?

A. CaPO4
B. CaCO3
C. CaSO4
D. SiO2

959. Rigor mortis i.e, stiffening of body after death results from__________?

A. Accunulation of rigid proteins molecules in sarcoplam.
B. Unavailability of ATP, which is necessary to break the link between actin and myosin.
C. Decrease in body temperature after death.
D. Death of tissue due to unavailability of O2.

960. Which of the following statement about an arthropod exoskeleton is incorrect?

A. It permits gaseous exchange
B. It contains joints, for the same purpose as present in human skeletal system
C. It provides muscle attachment
D. Like all the other types of exoskeleton, they lack sensation

961. Ecdysone is_________________?

A. An enzyme that digest endocuticle during an arthropodal ecdysis
B. A newly formed exoskeleton in authropods
C. A hormone that regulates moulting in arthropods
D. A process that involves moulting

962. Endoskeleton is secreted by?

A. Ectoderm.
B. Endoderm.
C. Mesoderm.
D. All of these

963. Which of the following statement about fatigue is correct?

A. The major event in it is accumulation of lactic acid.
B. Lactic acid accumulation turns pH in acidic range leading to muscle ache.
C. Ionic imbalance may also cause it.
D. All of these

964. Tetany is caused by__________?

A. Hypocalcemia
B. Hypercalcemia
C. Clostridum tetani.
D. Low O2 level

965. Collagen fibers of bone are hardened by deposition of_____________?

A. Ca & PO4
B. CaCO3
C. CaSO4
D. SiO2

966. Which one of the following is an example of a non-elastic connective tissue?

A. Ligaments.
B. Tendon
C. Muscles.
D. None of these

967. Which one of the following is avascular structure?

A. A compact bone.
B. A spongy bone.
C. Cartilage
D. All of these

968. Which of the following muscle is an antagonistic member of Biceps brachii?

A. Bracheoradialis
B. Brachialis.
C. Intercostals
D. Triceps

969. Which of the following bone is not present in the hind-limb?

A. Femur
B. Tibia
C. Radius
D. Fibula

970. Insertion of Biceps is on_________?

A. Ulna
B. Radius
C. Olecronon process of ulna.
D. Scapula

971. How many bones are present in the wrist?

A. 4 bones
B. 6 bones
C. 8 bones
D. 14 bones

972. Which of the following statement is incorrect regarding the locomotion in Euglena?

A. Move with the help of flagellum, attached to the anterior pole of the body.
B. Flagellum whipping backwards moving the organism forward, and when moves forward the organism moves backward.
C. Myonemes can change the direction of the body by making it to shorten from anterior to the posterior pole.
D. None of these

973. Which of the following bones bones are present in the plam of hand?

A. Carpals
B. Metacarpals
C. Phalanges
D. Metatarsals

974. Which of the following animal uses Setae and Muscles for their Iocomotion?

A. Cockroach
B. Snail
C. Earthworm
D. Star fish

975. How many vertebrae are present in vertebral column of man?

A. 33 vertebrae
B. 33 pairs of vertebrae
C. 25 vertebrae
D. 31 vertebrae

976. Which of the following vertebrates have a fish-like body?

A. Reptiles
B. Aves
C. Amphibians
D. Mammals.

977. How many vertebrae are present in coccyx?

A. 7
B. 12
C. 9
D. 4

978. Which of the following pairs of fins in a fish body are paired?

A. Dorsal and ventral.
B. Pectoral and Pelvic.
C. Tail and anal
D. All of these

979. How many vertebrae are present in thoracic region?

A. 7
B. 12
C. 5
D. 4

980. Among the following organisms which shows the best adaptations for locomotion?

A. Amoeba.
B. Earthworm.
C. Reptiles
D. Amphibians.

981. How many vertebrae are in sacrum?

A. 7
B. 12
C. 5
D. 4

982. Which of the following is the swiftest form of the locomotion?

A. Plantigrade
B. Digitigrade
C. Unguligrade
D. Hopping

983. S-band locomotion is characteristically seen in___________?

A. Bony fish
B. Cartilaginous fish.
C. Fish like mammals.
D. All fishes.

984. How many vertebrae are present in lumbar region?

A. 7
B. 12
C. 5
D. 4

985. Which of the following bones are present in pectoral girdle?

A. Clavicle
B. Scapula
C. Both of these
D. None of these

986. There are __________ types of nutrients needed by plants besides light to carry out photosynthesis

A. Two
B. Three
C. Four
D. Five

987. The site/s where most of the uptake of water and minerals take place is/are__________?

A. Root hairs
B. Root cells
C. Underground stem
D. All of these

988. The uptake of water in plants involves__________?

A. Active transport
B. Passive transport
C. Both of these
D. None of these

989. The membrane of vacuoles is known as__________?

A. Vacuoloplast
B. Tonoplast
C. Tanoplast
D. All of these

990 . The diffusion of ions along with water also takes place by mass flow system along the ________ path?

A. Tonoplast
B. Apoplast
C. Symplast
D. Vacuolar

991. Active transport is dependent on____________?

A. Photosynthesis
B. Respiration
C. Photophosporylation
D. None of these

992. In plants, the neighbouring cells are connected with one another by__________?

A. Plasmodesmata
B. Cell walls
C. Vacuoles
D. Both ‘A’ & ‘B’

993. In the root cells _______ pathway becomes discontinuous in the endodermis due to the presence of casparian strip.

A. Tonoplast
B. Apoplast
C. Symplast
D. Vacuolar.

994. Cytoplasmic strands that extend through pores in adjacent cell walls are known as___________?

A. Pseudopods
B. Symplasts
C. Plasmodesmata
D. Pili

995. In plants, water potential is determined by major factors?

A. Three
B. Four
C. Two
D. Five

996. The pressure generated when water enters & inflates plant cells is called ___________ potential?

A. Water
B. Osmotic
C. Pressure
D. Solute

997. The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)

A. Deffusion
B. Osmosis
C. Active transport
D. None of these

998. ___________ potential is the measure of the change in water potential of a system due to the presence of solute molecules?

A. Osmotic
B. Pressure
C. Both of these
D. None of these

999. ___________ component of cell wall has grreat affinity with water?

A. Lignin
B. Cellulose
C. Pectin
D. All of these

1000. Commonly in other plants than tall ones the speed of upward movement of water is____________?

A. 8mh-1
B. 1 mh-1
C. 7 mh-1
D. 4 mh-1

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