NEET Zoology PYQs

Which of the following are not the effects of Parathyroid hormone?
A.Stimulates the process of bone resorption
B.Decreases Ca²⁺ level in blood
C.Reabsorption of Ca²⁺ by renal tubules
D.Decreases the absorption of Ca²⁺ from digested food
E.Increases metabolism of carbohydrates
Choose the most appropriate answer from the options given below:

Match List-I with List-II with respect to methods of Contraception and their respective actions.

List-I	List-II
(A)Diaphragms	(I)Inhibit ovulation and Implantation
(B)Contraceptive Pills	(II)Increase phagocytosis of sperm within Uterus
(C)Intra uterine Devices	(III)Absence of Menstrual cycle and ovulation following parturition
(D)Lactational Amenorrhea	(IV)They cover the cervix blocking the entry of sperms

Choose the correct answer from the options given below:

If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness?

Ten E.coli cells with ¹⁵N- dsDNA are incubated in medium containing ¹⁴N nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from ¹⁵N ?

The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%, c & d is 24% and a & d is 29%.
What will be the sequence of these genes on a linear chromosome ?

Which of the following statements is not true?

Select the incorrect statement with respect to acquired immunity.

Which of the following is not a desirable feature of a cloning vector?

Statements related to human Insulin are given below.
Which statement(s) is/ are correct about genetically engineered Insulin?
A. Pro-hormone insulin contain extra stretch of C-peptide
B. A-peptide and B-peptide chains of insulin were produced separately in E.coli, extracted and combined by creating disulphide bond between them.
C. Insulin used for treating Diabetes was extracted from Cattles and Pigs.
D. Pro-hormone Insulin needs to be processed for converting into a mature and functional hormone.
E. Some patients develop allergic reactions to the foreign insulin. Choose the most appropriate answer from the options given below:

Given below are two statements:
Statement I: In a scrubber the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.
Statement II: Particulate matter (PM 2.5) can not be removed by scrubber but can be removed by an electrostatic precipitator.
In the light of the above statements, choose the most appropriate answer from the options given below: