300+ REAL TIME NEET Biology Objective Questions & Answers 2023

300+ TOP MCQs on Connective Tissue and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Connective Tissue Multiple Choice Questions

MCQs on Connective Tissue :

1. Find the correct statement
(a) Areolar tissue is a loose connective tissue
(b) Tendon is a specialized connective tissue
(c) Cartilage is a loose connective tissue
(d) Adipose tissue is a dense connective tissue

Answer

Answer: (a)

2. In comparison to human erythrocytes, frog’s erythrocytes are
(a) smaller and fewer
(b) nucleated and without haemoglobin
(c) enucleated but with haemoglobin
(d) nucleated and with haemoglobin

Answer

Answer: (d)

3. Tip of the nose and external ears have
(a) areolar tissue
(b) ligament
(c) cartilage
(d) bone

Answer

Answer: (c)

4. Mast cells contain
(a) heparin and histamine
(b) heparin and calcitonin
(c) serotonin and melanin
(d) vasopressin and relaxin

Answer

Answer: (a)

5. The largest extracellular material present in the
(a) Stratified epithelium
(b) Striated muscle
(c) Myelinated nerve fibres
(d) Areolar tissue

Answer

Answer: (d)

6. Peptidoglycan present in the cartilage is
(a) ossein
(b) chondroitin
(c) cartilagin
(d) casein

Answer

Answer: (b)

7. Antibodies are secreted by
(a) adipose cells
(b) reticular cells
(c) plasma cells
(d) mast cells

Answer

Answer: (c)

8. Histamine is secreted by
(a) histiocytes
(b) lymphocytes
(c) fibroblasts
(d) mast cells

Answer

Answer: (d)

9. Ligament is
(a) modified yellow elastic fibrous tissue
(b) inelastic white fibrous tissue
(c) modified white fibrous tissue
(d) none of the above

Answer

Answer: (a)

10. Collagen is
(a) carbohydrate
(b) lipid
(c) fibrous protein
(d) globular protein

Answer

Answer: (c)

300+ TOP MCQs on Transcription In Eukaryotes and Answers

MCQs on Transcription In Eukaryotes :

1. The enzyme required for transcription is
(a) RNAase
(b) DNA polymerase
(c) RNA polymerase
(d) Restriction enzymes

Answer

Answer: (c)

2. Transcription is the transfer of genetic information from
(a) DNA to RNA
(b) DNA to mRNA
(c) mRNA to tRNA
(d) tRNA to mRNA

Answer

Answer: (b)

3. Sigma factor is a component of
(a) DNA ligase
(b) DNA polymerase
(c) Endonuclease
(d) RNA polymerase

Answer

Answer: (d)

4. The main function of tRNA with regards to protein synthesis is
(a) Proofreading
(b) identifies amino acids and transports them to ribosomes
(c) Inhibits protein synthesis
(d) all of the above

Answer

Answer: (b)

5. One end of tRNA matches genetic code in three-nucleotide sequences known as
(a) codon
(b) genetic code
(c) blunt ends
(d) anticodon

Answer

Answer: (d)

6. The longest primary transcript is generated by
(a) dystrophin gene
(b) Tintin gene
(c) neuromedin u
(d) centromere protein A

Answer

Answer: (a)

7. A DNA sequence is read by an RNA polymerase that produces complementary antiparallel RNA strand known as
(a) Hexa transcript
(b) secondary transcript
(c) primary transcript
(d) tertiary transcript

Answer

Answer: (c)

8. Which of these subunits of RNA polymerase is totally required to initiate transcription?
(a) alpha (α)
(b) sigma (σ)
(c) omega (ω)
(d) beta (β)

Answer

Answer: (b)

9. In both prokaryotic and eukaryotic cells, the synthesis of protein chains is initiated with
(a) Arginine
(b) Methionine
(c) Serina
(d) Valine

Answer

Answer: (b)

10. In eukaryotes, in order to initiate transcription
(a) RNA strand must be present
(b) RNA polymerase must be present
(c) Core promoter sequence must be present
(d) None of these

Answer

Answer: (c)

300+ TOP MCQs on Human Brain and Answers

MCQs on Human Brain :

1. The stimulation of a muscle fibre by a motor neuron occurs at the
(a) myofibril
(b) transverse tubules
(c) neuromuscular junction
(d) sarcoplasmic reticulum

Answer

Answer: (c)

2. An injury sustained by the hypothalamus is most likely to interrupt
(a) coordination during locomotion
(b) short term memory
(c) regulation of body temperature
(d) executive function like decision making

Answer

Answer: (c)

3. In humans, the Alzheimer disease is linked with the deficiency of
(a) acetylcholine
(b) dopamine
(c) glutamic acid
(d) Gamma Amino Butyric Acid (GABA)

Answer

Answer: (a)

4. What is the person with these symptoms suffering from? Outbursts of emotions, unpredictable moods, quarrelsome behaviour, conflicts with others
(a) Mood disorders
(b) Addictive diroders
(c) Schizoprenia
(d) Borderline personality disorder (BPD)

Answer

Answer: (d)

5. Even after the brain of a frog has been crushed, it still responds to a pinch on the leg by drawing it away. This act is an example of
(a) Conditioned reflex
(b) Simple reflex
(c) Automated motor response
(d) Neurotransmitter induced response

Answer

Answer: (b)

6. Which of these functions will be affected if the medulla oblongata is damaged?
(a) Vision
(b) Thermoregulation
(c) Memory
(d) Tactile sensation – response when prickled with a needle

Answer

Answer: (d)

7. This part of the human brain is also known as the emotional brain
(a) Epithalamus
(b) Limbic system
(c) Broca’s area
(d) Corpus callosum

Answer

Answer: (b)

8. This is the outermost cranial appendage
(a) Dura mater
(b) Pia mater
(c) Skull
(d) Arachnoid

Answer

Answer: (a)

9. This cranial meninges is in close proximity of the brain tissue
(a) Dura mater
(b) Pia mater
(c) Arachnoid
(d) Skull tissue

Answer

Answer: (b)

10. This statement is not associated with midbrain
(a) the ventral portion of the midbrain is composed of mainly four, round swellings known as corpora quadrigemina
(b) located between thalamus of the forebrain and pons of the hindbrain
(c) the canal called cerebral aqueduct passes through the midbrain
(d) hindbrain and midbrain constitute the brain stem

Answer

Answer: (a)

300+ TOP MCQs on Electrocardiography and Answers

MCQs on Electrocardiography :

1. ECG (Electrocardiogram) was developed first by
(a) Wilhelm His
(b) Steward
(c) Hubert Mann
(d) Willem Einthoven

Answer

Answer: (d)

2. This is the classic ECG change in MI (myocardial infarction)
(a) ST-segment elevation
(b) T-wave inversion
(c) Development of an abnormal Q wave
(d) All of these

Answer

Answer: (d)

3. In which of these conditions can widen QRS and Tall-tented T waves be observed?
(a) Hyponatremia
(b) Hyperkalemia
(c) Hyperglycemia
(d) Hyperphosphatemia

Answer

Answer: (b)

4. A particular ECG change observed in Hypokalemia is
(a) ST segment elevation
(b) U wave (a position deflection after the T wave)
(c) Tall peaked T waves
(d) Widening of the QRS complex and increased amplitude

Answer

Answer: (b)

5. ECG report must consist of the following information
(a) Rhythm, cardiac axis
(b) Conduction intervals
(c) Description of the ST segments, QRS complexes, T-waves
(d) All of these

Answer

Answer: (d)

6. For the normal heartbeat, depolarization stimulus originates in
(a) His-bundle areas
(b) Epicardium
(c) Sinoatrial (SA)node
(d) Atrioventricular (AV) node

Answer

Answer: (c)

7. The characteristics – slurring of the initial QRS deflection, shortened PR interval, and prolonged QRS duration are of this condition
(a) Atrial tachycardia
(b) Left bundle branch block
(c) WPW (Wolff-Parkinson-White) syndrome
(d) Myocardial ischemia

Answer

Answer: (c)

8. P wave indicates
(a) Depolarization of right ventricle
(b) Depolarization of left ventricle
(c) Depolarization of both atria
(d) Atria to ventricular conduction time

Answer

Answer: (c)

9. Ventricular muscle depolarization is indicated by
(a) PR interval
(b) P wave
(c) U wave
(d) The QRS complex

Answer

Answer: (d)

10. ECG identified by the PR interval tends to become longer with every succeeding ECG complex until there is a P wave not followed by a QRS is observed in
(a) Third-Degree Atrioventricular Block
(b) Second-Degree Atrioventricular Block, Type II
(c) Second-Degree Atrioventricular Block, Type I
(d) First-Degree Atrioventricular Block, Type II

Answer

Answer: (c)

300+ TOP MCQs on Protista and Answers

MCQs on Protista :

1. The protistan genome has
(a) Free nucleic acid aggregates
(b) Membrane-bound nucleoproteins embedded in the cytoplasm
(c) Gene containing nucleoproteins condensed together in a loose mass
(d) nucleoprotein in direct contact with cell substance

Answer

Answer: (b)

2. The protist that reproduces both by binary fission and conjugation is
(a) Amoeba
(b) Euglena
(c) Paramecium
(d) Monocystis

Answer

Answer: (c)

3. Few protists possess structures to regulate their water content. They are
(a) membranes
(b) Chromatophores
(c) Nuclei
(d) Contractile vacuoles

Answer

Answer: (d)

4. Protists include
(a) Bacteria, fungi, algae and Bryophyta
(b) Protozoa, algae and fungi
(c) Vascular plants, slime moulds, and fungi
(d) Bacteria, algae, protozoa, and Bryophyta

Answer

Answer: (b)

5. Pick the wrong statement
(a) Diatoms are primarily produced in the oceans
(b) Diatoms are microscopic and float passively in the water
(c) Walls of diatoms are destructible easily
(d) Diatomaceous earth is formed by the cell walls of diatoms

Answer

Answer: (c)

6. Micronucleus and macronucleus are the characteristic features of
(a) Balantidium and Hydra
(b) Vorticella and Nyctotherus
(c) Opalina and Nyctotherus
(d) Vorticella and Paramecium

Answer

Answer: (d)

7. The cell walls form two thin overlapping shells in which group of organisms such that they fit together
(a) Euglenoids
(b) Dinoflagellates
(c) Slime moulds
(d) Chrysophytes

Answer

Answer: (d)

8. Whorling whips are named so because of
(a) Type of nucleus
(b) Mode of movement
(c) Mode of reproduction
(d) Mode of nutrition

Answer

Answer: (b)

9. Red tide is caused by
(a) Noctiluca
(b) Ceratium
(c) Gonyaulax
(d) All of the above

Answer

Answer: (d)

10. In Dinoflagellates, the reserve food is
(a) Fucoxanthin
(b) Starch
(c) Alginic acid
(d) Mannitol

Answer

Answer: (b)

300+ TOP MCQs on Plastids and Answers

MCQs on Plastids :

1. All three types of plastids have evolved from
(a) Leucoplast
(b) Chloroplast
(c) Pro-plastid
(d) Chromoplast

Answer

Answer: (c)

2. These lack plastids
(a) fungi and animals
(b) plants and animals
(c) bacterium, animals and fungi
(d) none of the above

Answer

Answer: (c)

3. This is a common feature of plastids and mitochondria
(a) both have dsDNA
(b) Both contains 70s ribosomes
(c) both are double membranous cell organelles
(d) all of these

Answer

Answer: (d)

4. All are colourless plastids(leucoplasts) except
(a) amyloplast
(b) elaioplast
(c) rhodoplast
(d) proteinoplast

Answer

Answer: (c)

5. Plastids are present in
(a) Euglenoides
(b) Plants
(c) Both (a) and (b)
(d) all protists

Answer

Answer: (c)

6. Cell organelles found only in plants are
(a) Ribosomes
(b) Mitochondria
(c) Golgi complex
(d) Plastids

Answer

Answer: (d)

7. Plastids are not found in which of the following
(a) Fungi
(b) Blue green algae
(c) Bacteria
(d) all of these

Answer

Answer: (d)

8. Plant cells and animal cells differ from each other in having
(a) Vacuole
(b) Centrosome
(c) Plastid
(d) Golgi body

Answer

Answer: (c)

9. The type of plastids helping in pollination is
(a) Leucoplasts
(b) Chloroplasts
(c) Chromoplasts
(d) All of the above

Answer

Answer: (c)

10. Fret channels are associated with
(a) Two lamellae of a granum
(b) Two grana of a chloroplast
(c) Two quantasomes
(d) Two plastids of a cell

Answer

Answer: (b)