Doubtly
@Doubtly · Joined Feb 2021
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- Regarding Meiosis, which of the statements is incorrect? 2) DNA replication occurs in S phase of Meiosis-II 2
- Natural selection where more individuals acquire specific character value other than the mean character value, leads to 2) Directional change 2
- Given below are two statements: Statement I: The coagulum is formed network of threads called thrombins. Statement II: Answer: 4) Statement I is incorrect but Statement II is correct Statement I is incorrect. The coagulum (clot) is a network of threads called... 1
- Breeding crops with higher levels of vitamins and minerals or higher proteins and healthier fats is called: 3) Bio-fortification 2
- In gene therapy of Adenosine Deaminase (ADA) deficiency, the patient requires periodic infusion of genetically 4) Genetically engineered lymphocytes are not immortal cells. 1
- At which stage of life the oogenesis process is initiated? 1) Puberty 2) Embryonic development stage 3) Birth 4) Adult 2) Embryonic development stage 2
- Lippe’s loop is a type of contraceptive used as: 1) Cervical barrier 2) Vault barrier 3) Non-Medicated IUD 2
- Which of the following functions is not performed by secretions from salivary glands? 4) Digestion of disaccharides 2
- Which of the following is a correct statement? 1) Cyanobacteria area a group 1) Cyanobacteria area a group of autotrophic organisms classified under Kingdom Monera 1
- Select the incorrect statement with respect to acquired immunity. 4) Acquired immunity is non-specific type of defense present at the time of birth. 1
- If a colour blind female marries a man whose mother was also a colour blind, what are the chances of her option 4 is correct that is 4) 100% 2
- Which of the following is not a desirable feature of a cloning vector? 4) Presence of two or more recognition sites 2
- Which one of the following statements is correct? 1) The atrio-ventricular node (AVN) generates an acti 3) Blood moves freely from atrium to the ventricle during joint diastole. 1
- Select the incorrect statement regarding synapses: 4) Impulse transmission across a chemical synapse is always faster than that across an electrical synapse 1
- Which of the following statements is not true? 4) Flippers of penguins and dolphins are a pair of homologous organs 1
- The frequency of light emitted for the transition n = 4 to n = 2 of He+ is equal to the transition in H atom (2) n = 2 to n = 1 2
- Ionisation energy of He+ is 19.6×10-18J atom-1. The energy of the first stationary state (n = 1) of Li2+ is (3) -4.41×10⁻¹⁷ J atom^(-1 ) Given I.E = 19.6×10⁻¹⁸ I.E ∝ z² (I.E) Li²⁺/He⁺ = (9/4)×19.6×10⁻¹⁸ = -4.41×10⁻¹⁷ 1
- The energy required to break one mole of Cl–Cl bonds in Cl2 is 242 kJ mol-1. The longest wavelength of light capable (1) 494 nm We have B.E = 242KJ/Mol E = h_cN_A/λ ∴ λ = h_cN_A/E = 3×10⁸×6.626×10⁻³⁴×6.02×10²³/(242×10³) = 0.494×10⁻³×10³ = 494 nm 1