Which of these is not an important component of initiation of parturition in humans?

NEET-2021 Human-Reproduction [class-xii ]

• Increase in estrogen and progesterone ratio
• Synthesis of prostaglandins
• Release of Oxytocin
• Release of Prolactin
Correct Option: D  [ Release of Prolactin ]

Remark:

Which of the following secretes the hormone, relaxin, during the later phase of pregnancy?

NEET-2021 Human-Reproduction [class-xii ]

• Graafian follicle
• Corpus luteum
• Foetus
• Uterus
Correct Option: B  [ Corpus luteum ]

Remark:

Statement I: The condon 'AUG' codes for methionine and phenylalanine.
Statement II: 'AAA' and 'AAG' both codons code for the amino acid lysine.
In the light of the above statements, choose the correct answer from the options given below.

NEET-2021 Molecular-Basis-of-Inheritance [class-xii ]

• Both statement I and Statement II are true.
• Both Statement I and Statement II are false
• Statement I is correct but Statement II is false
• Statement I is incorrect but Statement II is true
Correct Option: D  [ Statement I is incorrect but Statement II is true ]

Remark:

Which one of the following statements about Histones is wrong?

NEET-2021 Molecular-Basis-of-Inheritance [class-xii ]

• Histones are organized to form a unit of 8 molecules.
• The pH of histones is slightly acidic.
• Histones are rich in amino acids - Lysine and Arginine.
• Histones carry positive charge in the side chain.
Correct Option: B  [ The pH of histones is slightly acidic. ]

Remark:

Match List-I with List-II.

NEET-2021 Evolution [class-xii ]

• A-III, B-II, C-I, D-IV
• A-II, B-I, C-IV, D-III
• A-I, B-IV, C-III, D-II
• A-IV, B-III, C-II, D-I
Correct Option: D  [ A-IV, B-III, C-II, D-I ]

Remark:

Match List-I with List-II.

NEET-2021 Human-Health-and-Disease [class-xii ]

• A-III, B-IV, C-I, D-II
• A-I, B-II, C-IV, D-III
• A-II, B-III, C-I, D-IV
• A-IV, B-I, C-III, D-II
Correct Option: A  [ A-III, B-IV, C-I, D-II ]

Remark:

Which of the following is not a step in Multiple Ovulation Embryo Transfer Technology (MOET)?

NEET-2021 Strategies-for-Enhancement-in-Food-Production [class-xii ]

• Cow is administered hormone having LH like activity for super ovulation
• Cow yields about 6-8 eggs at a time
• Cow is fertilized by artificial insemination
• Fertilized eggs are transferred to surrogate mothers at 8-32 cell stage
Correct Option: A  [ Cow is administered hormone having LH like activity for super ovulation ]

Remark:

The Adenosine deaminase deficiency results into:

NEET-2021 Biotechnology-and-its-Applications [class-xii ]

• Dysfunction of Immune system
• Parkinson's disease
• Digestive disorder
• Addison's disease
Correct Option: A  [ Dysfunction of Immune system ]

Remark:

Match List-I with List-II.

NEET-2021 Organisms-and-Populations [class-xii ]

• A-IV, B-I, C-III, D-II
• A-IV, B-I, C-II, D-III
• A-IV, B-III, C-II, D-I
• A-IV, B-II, C-III, D-I
Correct Option: B  [ A-IV, B-I, C-II, D-III ]

Remark:

Assertion (A): A person goes to high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart palpitations.
Reason (R): Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.
In the light of the above statements, choose the correct answer from the options given below.

NEET-2021 Organisms-and-Populations [class-xii ]

• Both (A) and (R) are true and (R) is the correct explanation of (A)
• Both (A) and (R) are true but (R) is not the correct explanation of (A)
• (A) is true but (R) is false
• (A) is false but (R) is true
Correct Option: A  [ Both (A) and (R) are true and (R) is the correct explanation of (A) ]

Remark: