The disease caused by the bacterium Corynebacterium diphtheriae is:
A. Tetanus
B. Diphtheria
C. Pertussis
D. Typhoid
Answer: Option B
Solution (By JKSSB Mock Tests)
Diphtheria affects the throat, forming a pseudomembrane, and releases a toxin affecting the heart and nerves. Tetanus is Clostridium, pertussis Bordetella, typhoid Salmonella.
Explanation:
Cilia and flagella are motile structures with a 9+2 axoneme of microtubules. Their movement propels the cell or moves fluids. R explains the structural basis.
Explanation:
Fungi are eukaryotic, mostly multicellular (except yeast), and are heterotrophic by absorption (saprophytic or parasitic). Their cell walls contain chitin. Monera are prokaryotic, Protista are unicellular eukaryotes, Plantae are autotrophic multicellular organisms. Fungi play key roles as decomposers in ecosystems.
Explanation:
Renin, released by juxtaglomerular cells of the kidney when blood pressure drops, cleaves angiotensinogen (from liver) to angiotensin I. ACE then converts angiotensin I to the active angiotensin II, a potent vasoconstrictor and stimulator of aldosterone. Pepsin and trypsin are digestive proteases.
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