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What does P wave indicate
General Science Biology Class 11th NEET UG NEET UG Preparation
Q. 21 of Quiz-1398 (Que-ID : 2689)
What does P wave indicate
- Depolarisation of atria
- repolarisation
- Depolarisation of ventricle
- None of the above
Ans → (a)Depolarisation of atria
Explanation →
This question is taken from this post → Body Fluid and Circulation, Class 11th Biology Practice Test | NEET MCQs - attemp/practice
More MCQs in - Body Fluid and Circulation, Class 11th Biology Practice Test | NEET MCQs
Q. 1 of Quiz-1398 (Que-ID : 2669)
How many percent of plasma is water
- 90-92
- 6-8
- 20-25
- None of the above
Q. 2 of Quiz-1398 (Que-ID : 2670)
Which among the following is not the major protein of plasma
- Fibrinogen
- Globulin
- Albumins
- Basophil
Q. 6 of Quiz-1398 (Que-ID : 2674)
Plasma without clotting factor is known as
- sirum
- Serum
- Both a and b
- None of the above
Q. 7 of Quiz-1398 (Que-ID : 2675)
Which is also known as reservoir of RBC
- Thymus
- Kidney
- Gall bladder
- Spleen
Q. 8 of Quiz-1398 (Que-ID : 2676)
Which among the following WBC secrete histamine, serotonin,heparin
- Eosinophil
- Neutrophil
- Basophil
- None of the above
Q. 9 of Quiz-1398 (Que-ID : 2677)
Where does erythropoiesis in adult takes place
- Bone marrow
- Spleen
- Thymus
- None of the above
Q. 12 of Quiz-1398 (Que-ID : 2680)
Which enzyme converts prothrombin into thrombin
- Thrombin
- Thrombokinase
- Pepcase
- Ligase
Q. 13 of Quiz-1398 (Que-ID : 2681)
Which among the following plays imp role in clotting
- mg2+
- Ca2+
- Na+
- Mn2+
Q. 16 of Quiz-1398 (Que-ID : 2684)
Which among the following has 2 chamber heart
- Fish
- Crocodile
- Birds
- Mammals
Q. 17 of Quiz-1398 (Que-ID : 2685)
Which is known as pacemaker of
- SA Node
- AV node
- AV bundle
- Purkinjee fibres
Q. 18 of Quiz-1398 (Que-ID : 2686)
How many times our heart beats in a minute
- 65-59
- 70-75
- 25-45
- None of the above
Q. 20 of Quiz-1398 (Que-ID : 2688)
What is first name of heart sound
- Dubb
- Lubb
- Both a and b
- None of the above
Q. 21 of Quiz-1398 (Que-ID : 2689)
What does P wave indicate
- Depolarisation of atria
- repolarisation
- Depolarisation of ventricle
- None of the above
Q. 22 of Quiz-1398 (Que-ID : 2690)
What?s meaning of systole
- Relaxation
- Contraction
- Both a and b
- None of the above
Q. 23 of Quiz-1398 (Que-ID : 2691)
What is normal blood pressure
- 120 over 80
- 190 over 120
- 70 over 70
- None of the above
Q. 24 of Quiz-1398 (Que-ID : 2692)
T wave represents
- Repolarisation
- Depolarisation of atria
- Depolarisation of ventricle
- Both b and c
Q. 25 of Quiz-1398 (Que-ID : 2693)
What condition occurs when not enough oxygen reaches heart muscle
- High bp
- Low bp
- Angina
- Heart failure
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In E. colt, the lac operon gets switched on when
- lactose is present and it binds to the repressor
- repressor binds to operator
- RNA polymerase binds to the operator
- lactose is present and it binds to RNA polymerase.
Q. 11 of Quiz- (Que-ID : 3279)
Rhodophyceae is called red algae because of the pigment
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Q. 22 of Quiz- (Que-ID : 2690)
What?s meaning of systole
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- Both a and b
- None of the above
Q. 8 of Quiz- (Que-ID : 2621)
Which enzyme converts polysaccharides into disaccharides
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Q. 11 of Quiz- (Que-ID : 3329)
Humoral immunity is associated with
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Q. 24 of Quiz- (Que-ID : 2637)
In which condition the food is not digested properly leading to feeling of fullness
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Q. 21 of Quiz- (Que-ID : 3114)
The nitrogen exists as two nitrogen atoms joined by
- Di covalent bonds
- tetra covalent bonds
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Q. 8 of Quiz- (Que-ID : 2976)
Green glands/ antennal glands are excretory structures of which organism
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Q. 6 of Quiz- (Que-ID : 3274)
Transgenic plants are the ones
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- Produced by a somatic embryo in artificial medium
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- Produced after protoplast fusion in artificial medium
Q. 24 of Quiz- (Que-ID : 2942)
Experimental verification of ‘chromosomal theory of inheritance’ was done by
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Q. 2 of Quiz- (Que-ID : 3270)
Which of the followings plant material is an efficient water imbibant?
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Q. 4 of Quiz- (Que-ID : 3247)
The clam nervous system is composed of
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- two pairs of ganglia
- three pairs of ganglia
Q. 35 of Quiz- (Que-ID : 606)
Red colour of tomato is caused due to the presence of
- Vitamin C
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- Leucoplasts
Q. 18 of Quiz- (Que-ID : 2811)
The thin and convoluted outer layer of gray matter that covers the cerebral hemispheres is
- Medulla oblongata
- Thalamus
- Cerebral cortex
- Meninges
Q. 2 of Quiz- (Que-ID : 3120)
Choose the correct statement/statements. Pumps in active transport are A. Lipids that bind molecules to pass them through the membrane. B. Transport molecules uphill. C. These are specific transporters. D. These are sensitive to inhibitors
- A and C
- A, B and D
- B, C and D
- C and D
Q. 14 of Quiz- (Que-ID : 3257)
Male mosquitoes usually feed on
- Garbage
- Human blood
- Flower sap
- All of the above
Q. 7 of Quiz- (Que-ID : 3075)
Oxidative phosphorylation refers to
- Anaerobic production of ATP
- The citric acid cycle production of ATP
- Production of ATP by chemiosmosis
- Alcoholic fermentation
Q. 21 of Quiz- (Que-ID : 3214)
Bark includes all the tissues
- Lying outside the vascular cambium
- Formed by vascular cambium
- Formed by phellogen
- Phellem & phelloderm
Q. 13 of Quiz- (Que-ID : 2956)
To initiate translation, the wiRNA first bind to
- the smaller ribosomal sub-unit
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- no such specificity exists
Q. 5 of Quiz- (Que-ID : 3931)
Which of the following statements regarding enzyme inhibition is correct?
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- Non-competitive inhibitors often bind to the enzyme irreversibly
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Q. 5 of Quiz- (Que-ID : 3423)
Transgenic Bacteria is used in the making of following :
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Q. 21 of Quiz- (Que-ID : 2964)
The structure in chromatin seen as ‘beads-on string’ when viewed under electron microscope are called
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Q. 8 of Quiz- (Que-ID : 2826)
If a butterfly has chromosome number 360 in its meiocyte (2n). What will be the chromosome number in its gametes?
- 190
- 380
- 95
- 760
Q. 6 of Quiz- (Que-ID : 2619)
Which cell is responsible for secretion of HCL and intrinsic factors
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- Chief cell
- Mucus cell
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Q. 4 of Quiz- (Que-ID : 2997)
If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into
- Prophase
- Anaphase
- Telophase
- Metaphase
Q. 12 of Quiz- (Que-ID : 3080)
Translocation of sugar in flowering plants occurs in the form of
- glucose
- sucrose
- starch
- maltose
Q. 11 of Quiz- (Que-ID : 2624)
Absorption of water in large intestine is done by
- Chief cells
- Haustra cells
- Parietal cell
- Peptic cell
Q. 8 of Quiz- (Que-ID : 2751)
Glucagon hormone is secreted by
- Thyroid gland
- Pituitary
- Adrenal
- Pancreas
Q. 18 of Quiz- (Que-ID : 3211)
Vessels differ from tracheids
- in being living
- in being derived from a single cell
- in that they consist of vertical row of cells with cross walls dissolved
- in coducting water and minerals
Q. 22 of Quiz- (Que-ID : 3540)
The agents that bring undesirable changes in the environment arc called
- Pollution
- Fragments
- Pollutants
- None of the above
Q. 21 of Quiz- (Que-ID : 3089)
During photochemical reaction of photosynthesis–
- liberation of O2 takes place
- Formation of ATP and NADPH2 take place
- Liberation of O2, formation of ATP, and NADPH2 takes place
- Assimilation of CO2 takes place
Q. 8 of Quiz- (Que-ID : 3101)
Choose the correct function of magnesium
- It is a constituent of several coenzyme
- It activates the enzymes of respiration and photosynthesis.
- It activates enzyme catalase
- It helps in maintaining anion-cation balance
Q. 9 of Quiz- (Que-ID : 3402)
Which of the given statement is correct in the context of observing DNA separated by agarose gel electrophoresis?
- DNA can be seen in visible light
- DNA can be seen without staining in visible light
- Ethidium bromide stained DNA can be seen in visible light
- Ethidium bromide stained DNA can be seen under exposure to UV light
Q. 4 of Quiz- (Que-ID : 3347)
Major percentage of India’s Gross Domestic Product is constituted by
- industry
- agriculture
- export
- small scale cottage industry
Q. 1 of Quiz- (Que-ID : 2819)
Which of the following groups is formed only of the hermaphrodite organisms?
- Earthworm, tapeworm, housefly, frog
- Earthworm, tapeworm, seahorse housefly
- Earthworm, leech, sponge, roundworm
- Earthworm, tapeworm, leech, sponge
Q. 14 of Quiz- (Que-ID : 2907)
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- on the either side of vagina in humans
- on either side of vas deferens in humans
- on either side of penis in humans
- on either side of Fallopian tube in humans
Q. 7 of Quiz- (Que-ID : 2750)
which of the following acts on bones
- Melatonin
- Triiodothyronine
- GH
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Q. 6 of Quiz- (Que-ID : 2699)
What are 8,9 and 10th ribs known as
- True ribs
- False ribs
- Floating ribs
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Q. 14 of Quiz- (Que-ID : 3382)
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- primary sludge
- activated sludge
- anaerobic sludge
Q. 22 of Quiz- (Que-ID : 3140)
Proteins that form huge pores in the membrane of the certain organelles and bacteria are called as
- Porins
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Q. 14 of Quiz- (Que-ID : 2857)
In albuminous seeds, food is stored in _______ and in non albuminous seeds, it is stored in _______
- endosperm, cotyledons
- cotyledons, endosperm
- nucellus, cotyledons
- endosperm, radicle
Q. 7 of Quiz- (Que-ID : 3325)
Which one of the following sets includes bacterial diseases ?
- Tetanus, tuberculosis, measles
- Diptheria, leprosy, plague
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