STD 12 - 7. human health and disease — NEET STD 11 Science — Question

Fresh water bony fishes maintain water balance by

Uremia is the occurrence of

Antibodies are produced by

Which of the following statements are correct for fertilization ?
(i) The motile sperms swim rapidly enter into the uterus after insemination and finally reach fallopian tube.
(ii) Fertilisation only occurs at the ampullary - isthmic junction.
(iii) During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of additional sperms.
(iv) The secretions of the acrosome help the sperm enter into the cytoplasm of the ovum and induce the completion of the meiotic division of the secondary oocyte.
(v) Scientifically it is correct to say that the sex of the baby is determined by the father and not by the mother.

What would be the proportions of light and hybrid density DNA molecule, respectively if Meselson and Stahl's experiment was continued for 60 minutes :

Which of the following is not a function of the skeletal system?

The autonomic nervous system has control over

Identify the wrong statement with reference to transport of oxygen.