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RBCs in the mammals have no nucleus because -
Human Anatomy and Physiology Class 12th NORCET Pharmacist Competitive Exams Nurse Competitive Exams
Q. 24 of Quiz-1066 (Que-ID : 1986)
RBCs in the mammals have no nucleus because -
- it has degenerated during development
- they do not have nucleus since early
- nucleus is harmful for RBCs
- Nucleus decrease surface area
Ans → (d)Nucleus decrease surface area
Explanation →
This question is taken from this post → Basics of Physiology Practice Test part-1 for Staff Nurse and Pharmacist Exams - attemp/practice
More MCQs in - Basics of Physiology Practice Test part-1 for Staff Nurse and Pharmacist Exams
Q. 1 of Quiz-1066 (Que-ID : 1963)
A person living at a high altitude will have-
- High alveolar capacity
- More erythrocytes
- Haemoglobin curve shifted towards right
- All of these
Q. 2 of Quiz-1066 (Que-ID : 1964)
The exchange of gases in the alveoli of the lungs takes place by-
- Simple diffusion
- Osmosis
- Passive transport
- Active transport
Q. 3 of Quiz-1066 (Que-ID : 1965)
Lungs are enclosed in-
- Pericardium
- Peritoneum
- Pleura
- Perichondrium
Q. 4 of Quiz-1066 (Que-ID : 1966)
Pasteurization of milk means-
- All bacteria are killed
- Milk is enriched with vitamins
- Pathogenic bacteria are killed
- Milk casein is partially digested
Q. 5 of Quiz-1066 (Que-ID : 1967)
Haemoglobin - oxygen dissociation curve is-
- Hyperbolic
- Straight
- Sigmoid
- Constant
Q. 7 of Quiz-1066 (Que-ID : 1969)
Respiratory Quotient (RQ) is less than 1 for -
- Potato
- Citrus Fruits
- Castor seeds
- Banana
Q. 8 of Quiz-1066 (Que-ID : 1970)
A pacemaker is implanted when one of these is defective-
- SA node
- AV node
- Purkinje fibres
- Bundle of lines
Q. 9 of Quiz-1066 (Que-ID : 1971)
Circulation of blood was discovered by-
- Darwin
- Harvey
- Aristotle
- Pasteur
Q. 10 of Quiz-1066 (Que-ID : 1972)
The sensation of stomach pain is due to-
- Interoreceptors
- Exteroreceptors
- Proprioreceptors
- Teloreceptors
Q. 11 of Quiz-1066 (Que-ID : 1973)
Arbor vitae is mainly composed of-
- Gray Matter
- Neuroglial cells
- White matter
- All of these
Q. 12 of Quiz-1066 (Que-ID : 1974)
Atoconium is found in-
- Perilymph
- Haemolymph
- Synovial fluid
- Otolithic membrane
Q. 13 of Quiz-1066 (Que-ID : 1975)
Eyelashes are lubricated by-
- Ceruminous glands
- Meibomian glands
- Lacrymal glands
- All of these
Q. 14 of Quiz-1066 (Que-ID : 1976)
Structure connected with vision in rabbit is-
- Corpus callosum
- Corpus albicans
- Hippocampus
- Corpora quadrigeuina
Q. 16 of Quiz-1066 (Que-ID : 1978)
Which of the following cranial nerves of man is Both sensory or motor?
- Optic
- Vagus
- Olfactory
- Trigeminal
Q. 17 of Quiz-1066 (Que-ID : 1979)
Cardiac cycle in man takes about-
- 0.5 seconds
- 1.2 seconds
- 1.0 seconds
- 0.8 seconds
Q. 18 of Quiz-1066 (Que-ID : 1980)
RBCs are generally destroyed in the liver, while WBCs are destroyed in-
- Plasma
- Lymph
- Inside various cells of body
- Out side the blood stream
Q. 19 of Quiz-1066 (Que-ID : 1981)
The hormone responsible for urine concentration is-
- Vasopressin
- Pitocin
- Thyroxine
- Renin
Q. 20 of Quiz-1066 (Que-ID : 1982)
Gigantism and acromegaly result from hypersecretion of-
- ADH
- GH
- STH
- None of the above
Q. 22 of Quiz-1066 (Que-ID : 1984)
The calcium level in the blood can be increased by administration of-
- Glucagon
- Thyroxine
- Parathormone
- Clcitonin
Q. 23 of Quiz-1066 (Que-ID : 1985)
Shape of an Eye is maintained by-
- Aqueous Humour
- Vitreous humour
- Conjunctiva
- All of these
Q. 24 of Quiz-1066 (Que-ID : 1986)
RBCs in the mammals have no nucleus because -
- it has degenerated during development
- they do not have nucleus since early
- nucleus is harmful for RBCs
- Nucleus decrease surface area
Q. 25 of Quiz-1066 (Que-ID : 1987)
Which of the following are respiratory organs of scorpions?
- Lungs
- Book-lungs
- Gills
- Ctenidia
More MCQs In - Human Anatomy and Physiology Class 12th NORCET Pharmacist Competitive Exams Nurse Competitive Exams
Q. 23 of Quiz- (Que-ID : 3923)
An example of amino acid which does not contain sulphur is
- Aspartic acid
- cystine
- Methionine
- Cysteine
Q. 19 of Quiz- (Que-ID : 3919)
Which of the following RNA have high concentration in cell?
- mRNA
- tRNA
- rRNA
- None of the above
Q. 17 of Quiz- (Que-ID : 2960)
If the sequence of bases in one strand of DNA is ATGCATGCA, what would be the sequence of bases on complementary strand ?
- ATGCATGCA
- AUGCAUGCA
- TACTACGT
- UACGUACGU
Q. 4 of Quiz- (Que-ID : 1521)
The ______________ of the body includes the head, neck, and trunk
- dorsal cavity
- axial portion
- appendicular portion
- ventral cavity
Q. 5 of Quiz- (Que-ID : 2570)
Which of the following antituberculosis drugs van damage the 8th cranial nerve?
- Isoniazid (INH)
- Paraaminosalicylic acid (PAS)
- Ethambutol Hydrochloride (Myambutol)
- Streptomycin
Q. 8 of Quiz- (Que-ID : 1857)
Santhals were associated with-
- Tribal Rebellion
- Non-cooperation Movement
- Salt Satyagraha
- Indigo Revolt
Q. 21 of Quiz- (Que-ID : 3539)
The natural aging of the lake is called
- Biomagnification
- Eutrophication
- BOD
- None of the above
Q. 11 of Quiz- (Que-ID : 1973)
Arbor vitae is mainly composed of-
- Gray Matter
- Neuroglial cells
- White matter
- All of these
Q. 8 of Quiz- (Que-ID : 432)
Sutlej River is the the tributary of which river ?
- Indus
- Ganga
- Kaveri
- Mahanadi
Q. 1 of Quiz- (Que-ID : 3876)
Optimum temp at which denaturation of protein takes place is
- 10
- 20
- 40
- 50
Q. 6 of Quiz- (Que-ID : 3906)
Milky type colour of urine gets elevated in
- Albimins
- Haemoglobin
- Fatty acid
- Nephritis
Q. 18 of Quiz- (Que-ID : 2936)
What can be the blood group of offspring when both parents have AB blood group ?
- AB only
- A, B and AB
- A, B, AB and O
- A and B only
Q. 19 of Quiz- (Que-ID : 3487)
Ecological pyramids were first devised by
- Charles Eltom
- R. Hesse
- R.A. Lindemann
- Justus von Liebig
Q. 22 of Quiz- (Que-ID : 576)
In a freezer ice cubes will be formed more quickly in trays made of
In a freezer ice cubes will be formed more quickly in trays made of
- rubber
- plastic
- aluminium
- wood
Q. 14 of Quiz- (Que-ID : 566)
Conversion of heat into electrical energy can be achieved by using a -
Conversion of heat into electrical energy can be achieved by using a -
- ammeter
- Hydrometer
- Voltmeter
- Thermocouple
Q. 17 of Quiz- (Que-ID : 1979)
Cardiac cycle in man takes about-
- 0.5 seconds
- 1.2 seconds
- 1.0 seconds
- 0.8 seconds
Q. 6 of Quiz- (Que-ID : 3449)
Parasites that feed on the external surface of the host organism are called
- Ecto parasites
- Endo parasites
- Brood parasitism
- None of the above
Q. 1 of Quiz- (Que-ID : 2944)
Which of the following statements is the most appropriate for sickle cell anaemia ?
- It cannot be treated with iron supplements.
- It is a molecular disease.
- It conferes resistance to acquiring malaria
- All of the above.
Q. 23 of Quiz- (Que-ID : 2916)
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called
- spermiogenesis
- spermatogenesis
- spermatocytogenesis
- spermiation
Q. 16 of Quiz- (Que-ID : 3309)
Which of the following statements is True ?
- Wings to birds and insects are homologous organs.
- Human hands and bird’s wings are analogous organs
- Human hands and bat’s wings are analogous organs.
- Flipper of penguin and dolphin are analogous organs
Q. 8 of Quiz- (Que-ID : 3401)
Which of the following steps are catalysed by Taq polymerase in a PCR reaction?
- Denaturation of template DNA
- Annealing of primers to template DNA
- Extension of primer end on the template DNA
- All of the above
Q. 7 of Quiz- (Que-ID : 1574)
Which one of the following is a bone that is embedded within a tendon?
- hyoid
- sesamoid
- sphenoid
- ethmoid
Q. 4 of Quiz- (Que-ID : 3397)
Plasmids in bacterial cells are
- extra-chromosomal DNA, which cannot replicate
- extra-chromosomal DNA, which can . self-replicate
- extra DNA associated with the genome
- extra DNA, associated with the genome, but cannot replicate.
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