NEET

MCQs on Endoplasmic Reticulum and Golgi Body for NEET 2023

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MCQs on Endoplasmic Reticulum and Golgi Body for NEET

NEET Biology is the scoring paper in the medical entrance examination. Here, you will discover the NEET Biology MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Biology Endoplasmic Reticulum and Golgi Body Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on Endoplasmic Reticulum and Golgi Body

1. This is the site where detoxification of xenobiotic compounds occurs
(a) Rough endoplasmic reticulum
(b) Ribosomes
(c) Cytosol
(d) Smooth endoplasmic reticulum

Answer

Answer: (d)

2. This is the function of Glycosylation
(a) helps in cell-cell adhesion
(b) confer stability in proteins
(c) helps in proper folding of protein
(d) synthesis of membrane lipid

Answer

Answer: (d)

3. This is a correctly matched pair
(a) Lysosomes – involved in synthesizing amino acids
(b) Microsomes – take part in photosynthesis
(c) Centrosomes – Provides enzymes essential for digestion
(d) Endoplasmic reticulum – has a role in the formation of a new nuclear membrane while cell divides

Answer

Answer: (d)

4. The endoplasmic reticulum in rapidly dividing cells is
(a) absent
(b) not functional
(c) poorly developed
(d) highly developed

Answer

Answer: (c)

5. The ER and bodies linked with it during ultracentrifugation are separated as a fraction known as
(a) Episome
(b) Polysome
(c) Microsome
(d) Quantasome

Answer

Answer: (c)

6. Sarcoplasmic reticulum is associated with
(a) Hormone synthesis
(b) Protein synthesis
(c) Release of calcium ions from muscle contractions
(d) None of the above

Answer

Answer: (c)

7. This is related to glycosylation of protein
(a) Lysosome
(b) Peroxisome
(c) Mitochondria
(d) ER

Answer

Answer: (d)

8. The transfer vesicle from RER fuse with which region of golgi complex
(a) Protein arms
(b) Medial
(c) Cis
(d) Trans

Answer

Answer: (c)

9. The main organelle involved in modification and routing of newly synthesized proteins to their destinations is
(a) Endoplasmic reticulum
(b) Lysosome
(c) Mitochondria
(d) Chloroplast

Answer

Answer: (a)

10. SER produces
(a) Nucleic acid
(b) Carbohydrate
(c) Protein
(d) Lipid

Answer

Answer: (d)

MCQs on Fertilization for NEET 2023

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MCQs on Fertilization for NEET 2020

NEET Biology is the scoring paper in the medical entrance examination. Here, you will discover the NEET Biology MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Biology Fertilization Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on Fertilization

1. Sperm lysin, the enzymatic substance produced by sperms in mammals is known as
(a) cryanogamone
(b) hyaluronic acid
(c) androgamone
(d) hyaluronidase

Answer

Answer: (d)

2. Egg development without fertilization is known as
(a) Parthenogenesis
(b) Metagenesis
(c) Gametogenesis
(d) Oogenesis

Answer

Answer: (a)

3. After a sperm has penetrated an ovum in the process of fertilization, entry of further sperms is prevented by
(a) condensation of yolk
(b) development of the vitelline membrane
(c) formation of fertilization membrane
(d) development of the pigment coat

Answer

Answer: (c)

4. In the process of fertilization, this is true
(a) entry of sperm activates the egg for completing meiosis
(b) only one sperm reaches the egg and enters it
(c) only the acrosome of the sperm enters the egg
(d) two haploid nuclei fuse and immediately divide to produce two nuclei which are again haploid

Answer

Answer: (a)

5. In rabbits, humans and other placental mammals, fertilization occurs in
(a) vagina
(b) ovary
(c) fallopian tubes
(d) uterus

Answer

Answer: (c)

6. In female mammals Bartholin’s glands open into the
(a) Fallopian tubes and release a secretion which makes sperms motile
(b) uterus and release a lubricating fluid during the birth of young ones
(c) vestibule and release a lubricating fluid in the vagina
(d) urinary bladder and assist in release of urine

Answer

Answer: (c)

7. This is a minute cell which separates from the animal egg during maturation is known as
(a) Primary oogonia
(b) secondary oogonia
(c) primary spermatogonia
(d) polar bodies

Answer

Answer: (d)

8. The nutritive medium for the ejaculated sperms is given by
(a) fallopian tube
(b) uterine lining
(c) seminal fluid
(d) vaginal fluid

Answer

Answer: (c)

9. This helps in the penetration of egg by the sperm
(a) fertilization membrane
(b) antifertilizin
(c) sperm lysin
(d) fertilizin

Answer

Answer: (c)

10. In a man, sperms move after ejaculation at a rate of nearly
(a) 2 to 4 inches/minute
(b) 2 to 4 mm/minute
(c) 2 to 4 cm/minute
(d) 2 to 4 feet/minute

Answer

Answer: (b)

Transcription In Eukaryotes Questions With Answers

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Transcription In Eukaryotes for NEET

NEET Biology is the scoring paper in the medical entrance examination. Here, you will discover the NEET Biology MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Biology Transcription In Eukaryotes Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

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)

Vascular Tissues Questions With Answers

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MCQs on Vascular Tissues of NEET

NEET Biology is the scoring paper in the medical entrance examination. Here, you will discover the NEET Biology MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Biology Vascular Tissues Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on Vascular Tissues

1. Lymph differs from blood in having
(a) much more of water content
(b) no WBC
(c) no RBC
(d) no protein

Answer

Answer: (c)

2. RBC will __________ if kept in 0.8% NaCl
(a) burst
(b) shrink
(c) remain unchanged
(d) none of the above

Answer

Answer: (c)

3. Division of WBC takes place by
(a) meiosis
(b) amitosis
(c) mitosis
(d) none of the above

Answer

Answer: (d)

4. Least constancy of shape is exhibited by
(a) blood platelets
(b) epithelial cells
(c) WBC
(d) RBC

Answer

Answer: (c)

5. In Camels, erythrocytes are
(a) oval and nucleated
(b) oval and non-nucleated
(c) circular, nucleated and biconvex
(d) circular, non-nucleated and biconcave

Answer

Answer: (a)

6. In adults. RBC is formed in
(a) the liver
(b) the thymus
(c) the spleen
(d) the bone marrow of long bones

Answer

Answer: (d)

7. Average life span of human RBC is
(a) 90 days
(b) 100 days
(c) 120 days
(d) none of the above

Answer

Answer: (c)

8. When the count of WBC drops below the optimum level of blood it is known as
(a) leukemia
(b) leukopenia
(c) anemia
(d) all of the above

Answer

Answer: (b)

9. Protein content is the highest in the lymphatics of
(a) kidney
(b) liver
(c) below the skin
(d) all the above

Answer

Answer: (b)

10. Abnormal rise in number of RBC count is known as
(a) polycythemia
(b) anaemia
(c) leukemia
(d) all of the above

Answer

Answer: (a)

MCQs on PN junction diode for NEET 2020

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MCQs on PN junction diode for NEET

NEET  Physics is the scoring paper in the medical entrance examination. Here, you will discover the NEET Physics MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Physics objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Physics PN junction diode Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on PN junction diode

1. In a PN junction with no external voltage, the electric field between acceptor and donor ion is called a
(a) Peak
(b) Barrier
(c) Threshold
(d) Path

Answer

Answer: (b) Barrier

2. In a PN junction the potential barrier is due to the charges on either side of the junction, these charges are
(a) Majority carriers
(b) Minority carriers
(c) Both (a) and (b)
(d) Fixed donor and accepter ions

Answer

Answer: (d) Fixed donor and accepter ions

3. The capacitance of a reverse-biased PN junction
(a) Increases as reverse bias is increased
(b) Decreases as reverse bias is increased
(c) Increases as reverse bias is decreased
(d) Is significantly low

Answer

Answer: (c) Increases as reverse bias is decreased

4. For a PN junction diode, the current in reverse bias maybe
(a) Few milliamperes
(b) Between 0.2 A and 15 A
(c) Few amperes
(d) Few micro or nano amperes

Answer

Answer: (d) Few micro or nano amperes

5. When PN junction is in forward bias, by increasing the battery voltage
(a) Circuit resistance increases
(b) Current through P_N junction increases
(c) Current through P_N junction decreases
(d) None of the above

Answer

Answer: (b) Current through P_N junction increases

6. When a PN junction is reverse biased
(a) Holes and electrons tend to concentrate towards the junction
(b) The barrier tends to break down
(c) Holes and electrons tend to move away from the junction
(d) None of these

Answer

Answer: (c) Holes and electrons tend to move away from the junction

7. A PN junction
(a) Has low resistance in forward as well as reverse directions
(b) Has high resistance in forward as well as reverse directions
(c) Conductors in the forward direction only
(d) Conducts in the reverse direction only

Answer

Answer: (c) Conductors in the forward direction only

8. A PN junction is said to be forward-biased when
(a) The positive terminal of the battery is connected to P-side and the negative side to the N-side
(b) Junction is earthed
(c) N-side is connected directly to the p-side
(d) The positive terminal of the battery is connected to N-side and the negative side to the P-side.

Answer

Answer: (a) The positive terminal of the battery is connected to P-side and the negative side to the N-side

9. PN junction failure below 5 V is caused primarily by
(a) Avalanche breakdown
(b) Zener breakdown
(c) Either (a) or (b)
(d) None of the above

Answer

Answer: (b) Zener breakdown

10. In a reverse-biased PN junction, the current through the junction increases abruptly at
(a) 0.5 V
(b) 1.1 V
(c) 0.72 V
(d) Breakdown voltage

Answer

Answer: (d) Breakdown voltage

MCQ on Alcohols, Phenols and Ethers

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MCQ on Alcohols, Phenols and Ethers for NEET

NEET  Chemistry is the scoring paper in the medical entrance examination. Here, you will discover the NEET Chemistry MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Chemistry objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Chemistry Alcohols, Phenols and Ethers Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on Alcohols, Phenols and Ethers

1. Benzenediazonium chloride on reaction with phenol in weakly basic medium gives
(a) diphenyl ether
(b) p-hydroxyazobenzene
(c) chlorobenzene
(d) Benzene

Answer

Answer: (b)

2. Phenol reacts with bromine in CS2 at low temperature to give
(a) m-bromophenol
(b) o-and p-bromophenol
(c) p-bromophenol
(d) 2,4,6-tribromophenol

Answer

Answer: (b)

3. When phenol is treated with excess bromine water it gives
(a) m-bromophenol
(b) o- and p-bromophenol
(c) 2,4-dibromophenol
(d) 2,4,6-tribromophenol

Answer

Answer: (d)

4. Phenol on reduction with H2 in the presence of Ni catalyst gives
(a) benzene
(b) toluene
(c) cyclohexane
(d) Cyclohexanol

Answer

Answer: (d)

5. Dehydration of alcohol is an example of
(a) addition reaction
(b) elimination reaction
(c) substitution reaction
(d) redox reaction

Answer

Answer: (b)

6. The compound obtained by the reaction of ethene with diborane followed by hydrolysis with alkaline H2O2 is
(a) ethanol
(b) propanol
(c) ethanol
(d) triethyl bromide

Answer

Answer: (a)

7. Which of the following is formed when phenol is exposed to air?
(a) o-Benzoquinone
(b) p-Benzoquinone
(c) Phenoquinone
(d) o-and p-Benzoquinone

Answer

Answer: (d)

8. Which of the following is formed when glycerol is heated with oxalic acid at 503K?
(a) Glyceric acid
(b) Acrolein
(c) Allyl alcohol
(d) Methanoic acid

Answer

Answer: (c)

9. The alcohol which does not react with Lucas reagent is
(a) isobutyl alcohol
(b) n-butanol
(c) tert-butyl alcohol
(d) sec-butyl alcohol

Answer

Answer: (b)

10. Phenol is less acidic than
(a) acetic acid
(b) p-methoxyphenol
(c) p-nitrophenol
(d) Ethanol

Answer

Answer: (a,c)