NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 43 of 112)
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- Assertion (A) : During protein synthesis, peptide bond formation is a dehydration reaction.
- Reason (R) : Peptide bond formation is done by sharing of electrons between a carboxyl carbon of one amino acid and an amino nitrogen of another amino acid.
- Both A and R are individually true and R is the correct explanation of A
- Both A and R are individually true but R is not the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : In citric acid cycle, when succinate is oxidised to fumarate, a molecule of carbon dioxide is lost.
- Reason (R) : When succinate is oxidised to fumarate, electrons and protons are passed to FAD reducing it to FADH2.
- Both A and R are individually true and R is the correct explanation of A
- Both A and R are individually true but R is not the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Before the origin of life, the atmosphere on earth was reducing in nature.
- Reason (R) : There was a great deal of volcanic activity at that time.
- Both A and R are individually true and R is the correct explanation of A
- Both A and R are individually true but R is not the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : RNA polymerases can synthesize RNA molecules from DNA template in both 5 − 3 ‘and 3 − 5’ directions.
- Reason (R) : RNA polymerases can slide in either direction along a DNA template.
- Both A and R are individually true and R is the correct explanation of A
- Both A and R are individually true but R is not the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : In Sycon (Scypha) , only self-fertilization occurs.
- Reason (R) : In Sycon, special sex organs are lacking.
- Both A and R are individually true and R is the correct explanation of A
- Both A and R are individually true but R is not the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : In prokaryotes, the translation begins on mRNA before transcription is completed.
- Reason (R) : The triplet codons in prokaryotic mRNA are transcribed from the sense strand of DNA and subsequently are translated continuously from 3-OH end to the 5-PO4 end.
- Both A and R are individually true and R is the correct explanation of A
- Both A and R are individually true but R is not the correct explanation of A
- A is true but R is false
- A is false but R is true
- What is the role of secretin from the following?
- It stimulates the testis to secrete testosterone
- It stimulates stomach to release HCl
- It stimulates pancreas to secrete the digestive enzymes
- It stimulates spleen to release the stored RBC
- The synthesis of plasma albumin in done by
- liver
- muscle cells
- pancreas
- spleen
- Consider the following statements:
- The females, but not males, of all wasps have sting.
- The adult wasps have shorter tongue than bees, and so can suck the nectar only from shallow flowers.
- Which of the statements given above is⟋are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- ‘Bombay duck’ is the common name of which one of the following commercial fish?
- Hilsa ilisha
- Harpodon nehereus
- Chanos chanos
- Lates calcarifer
- Match List-I (Disease) with List-II (Insect Vecto) and select the correct answer using the code given below the lists
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 43 of 112) List-I List-II - Dengue
- Trypanosomiasis
- Bubonic plague
- Trench fever
- Glassina palpalis
- Aedes sp
- Pediculus humanus
- Xenopsylla cheopis
- A
- B
- C
- D
- 2
- 1
- 4
- 3
- 2
- 4
- 1
- 3
- 3
- 1
- 4
- 2
- 3
- 4
- 1
- 2
- Venomous snakes with grooved fangs belong to the group
- Proteroglypha
- Solenoglypha
- Hologlypha
- Opisthoglypha
- Consider the following characteristics of snakes:
- Flat tail
- Belly covered with uniform small scales continuouswith dorsals
- Loreal pit present between eye and nostril
- Which of the above is⟋are the characteristics (s) of poisonous snakes?
- 1 and 2 only
- 1 and 3 only
- 3 only
- 1,2 and 3
- Consider the following statements:
- Adult rohu (Labeo rohita) is a herbivorous fish.
- Anabas (Anabas testudineus) . is a carnivorous fish.
- Which of the statements given above is⟋are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Duchenne muscular dystrophy is a⟋an
- sex-linked disorder
- autosomal disorder
- pre-disposition to multiple cancer
- trinucleotide repeat expansion