Given below are two statements:
Statement I: The release of sperms into the seminiferous tubules is called spermiation. Statement II: Spermiogenesis is the process of formation of sperms from spermatogonia. In the light of the above statements, choose the most appropriate answer from the options given below:

NEET-2022 Human-Reproduction [class-xii ]

• Both Statement I and Statement II are incorrect
• Statement I is correct but Statement II is incorrect
• Statement I is correct but Statement II is incorrect
• Both Statement I and Statement II are correct
Correct Option: B  [ Statement I is correct but Statement II is incorrect ]

Remark:

Lippe's loop is a type of contraceptive used as:

NEET-2022 Reproductive-Health [class-xii ]

• Vault barrier
• Non–Medicated IUD
• Copper releasing IUD
• Cervical barrier
Correct Option: B  [ Non–Medicated IUD ]

Remark:

In an E.coli strain i gene gets mutated and its product can not bind the inducer molecule. If growth medium is provided with lactose, what will be the outcome?

NEET-2022 Molecular-Basis-of-Inheritance [class-xii ]

• z, y, a genes will be transcribed
• z, y, a genes will not be translated
• RNA polymerase will bind the promoter region
• Only z gene will get transcribed
Correct Option: B  [ z, y, a genes will not be translated ]

Remark:

If the length of a DNA molecule is 1.1 metres, what will be the approximate number of base pairs?

NEET-2022 Molecular-Basis-of-Inheritance [class-xii ]

• 6.6 x 10⁶ bp
• 3.3 x 10⁹ bp
• 6.6 x 10⁹ bp
• 3.3 x 10⁶ bp
Correct Option: B  [ 3.3 x 10⁹ bp ]

Remark:

Natural selection where more individuals acquire specific character value other than the mean character value, leads to:

NEET-2022 Evolution [class-xii ]

• Directional change
• Disruptive change
• Random change
• Stabilising change
Correct Option: A  [ Directional change ]

Remark:

Given below are two statements:
Statement I: Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as foreign bodies.
Statement II: Rheumatoid arthritis is a condition where body does not attack self cells.
In the light of the above statements, choose the most appropriate answer from the options given below:

NEET-2022 Human-Health-and-Disease [class-xii ]

• Both Statement I and Statement II are incorrect
• Statement I is correct but Statement II is incorrect
• Statement I is incorrect but Statement II is correct
• Both Statement I and Statement II are correct
Correct Option: B  [ Statement I is correct but Statement II is incorrect ]

Remark:

In gene therapy of Adenosine Deaminase (ADA) deficiency, the patient requires periodic infusion of genetically engineered lymphocytes because:

NEET-2022 Human-Health-and-Disease [class-xii ]

• Gene isolated from marrow cells producing ADA is introduced into cells at embryonic stages
• Lymphocytes from patient's blood are grown in culture, outside the body.
• Genetically engineered lymphocytes are not immortal cells.
• Retroviral vector is introduced into these lymphocytes.
Correct Option: C  [ Genetically engineered lymphocytes are not immortal cells. ]

Remark:

Breeding crops with higher levels of vitamins and minerals or higher proteins and healthier fats is called:

NEET-2022 Strategies-for-Enhancement-in-Food-Production [class-xii ]

• Bio-remediation
• Bio-fortification
• Bio-accumulation
• Bio-magnification
Correct Option: B  [ Bio-fortification ]

Remark:

Which of the following statements with respect to Endoplasmic Reticulum is incorrect?

NEET-2022 cell-the-unit-of-life [class-xi ]

• SER is devoid of ribosomes
• In prokaryotes only RER are present
• SER are the sites for lipid synthesis
• RER has ribosomes attached to ER
Correct Option: B  [ In prokaryotes only RER are present ]

Remark:

A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is C6H12O6 then what is the formula for maltose ?

NEET-2022 Biomolecules [class-xi ]

• C₁₂H₂₄O₁₂
• C₁₂H₂₂O₁₁
• C₁₂H₂₄O₁₁
• C₁₂H₂₀O₁₀
Correct Option: B  [ C₁₂H₂₂O₁₁ ]

Remark: