The element that is a component of DNA and ATP is:
A. Nitrogen
B. Phosphorus
C. Iron
D. Sulfur
Answer: Option B
Solution (By JKSSB Mock Tests)
Phosphorus is part of the phosphate backbone of DNA/RNA and the high-energy bonds of ATP. Nitrogen is in bases and amino acids, iron in hemoglobin, sulfur in some amino acids. Phosphorus is essential for energy transfer and genetic material.
Explanation:
Lymphatic filariasis, caused by Wuchereria bancrofti and transmitted by Culex mosquito, leads to chronic swelling of limbs (elephantiasis) due to blockage of lymphatic vessels. Amoebiasis is Entamoeba, sleeping sickness Trypanosoma, kala-azar Leishmania.
Explanation:
Seminal vesicles produce a fructose-rich fluid (energy for sperm), and the prostate gland adds a milky, alkaline fluid to form semen. The testis produces sperm, epididymis stores them, vas deferens transports.
Explanation:
The cochlea, a spiral-shaped organ in the inner ear, contains the organ of Corti with hair cells that transduce mechanical vibrations into electrical impulses. The eardrum and ossicles conduct sound to the cochlea. The auditory nerve transmits impulses to the brain. Thus, transduction occurs in the cochlea.
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