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IUDs: I. Increase phagocytosis of sperms II. Release Cu ions that suppress sperm motility and fertilising capacity of sperms III. Make the uterus unsuitable for implantation IV. Make the cervix hostile to sperms V. Prevent semen from entering the female reproductive tract. Which of the above statements are true?
Sterilisation in males is ____________ and in females is ___________:
MTP is practised mainly to:
Which of the sets of diseases are completely curable if detected early?
People especially vulnerable to STDs are in the age group:
Match the following term from Column-I with its correct abbreviation in Column-II: Column-I: Zygote Inter-Fallopian Transfer
MTPs are considered relatively safe during the _______ trimester; _______ trimester abortions are riskier:
Match the Assisted Reproductive Technologies (ARTs) with their correct descriptions: I. Collected gametes are made to form the zygote in the laboratory. II. Zygote or early embryo with upto 8 blastomeres is transferred into the oviduct. III. Zygote with more than 8 blastomeres is transferred into the uterus. IV. Fusion of gametes within the female. V. Transfer of ovum from a donor to the oviduct of the recipient. VI. Sperm is injected into the ovum in-vitro.
Name the component that binds to the operator region of an operon and prevents RNA polymerase from transcribing the operon.
A certain mass of hydrogen is changed to helium by the process of fusion. The mass defect in the fusion reaction is 0.02866 u. The energy liberated per nucleon is: (given 1 u = 931 MeV)
Match the contraceptive method 'Pill' with its primary mode of action: I. Pill
Which of the following is a natural method of contraception?
A mixture consists of two radioactive materials $A_1$ and $A_2$ with half lives of 20 s and 10 s respectively. Initially the mixture has 40 g of $A_1$ and 160 g of $A_2$. The amount of the two in the mixture will become equal after:
For the reduction of silver ions with copper metal, the standard cell potential was found to be $+0.46 \text{ V}$ at $25^\circ\text{C}$. The value of standard Gibbs energy, $\Delta G^\circ$ will be: ($F = 96500 \text{ C mol}^{-1}$)
Identify the contraceptive methods A, B, C, D, and E from the list below (corresponding to standard NCERT diagrams): I. Tubectomy II. Vasectomy III. Implants IV. Condoms V. Copper T VI. Cervical caps
Natural methods for contraception work on the principle of:
ART [used to help infertile couples] stands for:
Periodic abstinence is a natural method of contraception where the couples avoid or abstain from coitus during the period of the menstrual cycle when:
Emergency contraception involves administering any of the following within 72 hours of unprotected sexual activity except:
The EM wave with the shortest wavelength among the following is: