The disease caused by the fungus Candida albicans is: MCQ with Answer and Explanation

The disease caused by the fungus Candida albicans is:
A. Athlete's foot
B. Aspergillosis
C. Candidiasis
D. Ringworm
Answer: Option C
Solution (By JKSSB Mock Tests)
Candidiasis (thrush) is an opportunistic fungal infection caused by Candida albicans, affecting moist areas like mouth, vagina, and skin folds. Ringworm is caused by dermatophytes, athlete's foot by Trichophyton, aspergillosis by Aspergillus.

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Practice More Biology Questions

Question #1
The codon AUG codes for:
A. Methionine
B. Arginine
C. Glycine
D. Alanine

Correct Answer: Option A


Explanation:
AUG is the initiation codon and codes for methionine in eukaryotes (formylmethionine in prokaryotes). It signals the start of translation. Arginine codons include CGU, CGC, etc. Alanine is coded by GCU, etc. Glycine by GGU, etc. The genetic code is degenerate, meaning multiple codons can code for the same amino acid, but AUG is unique as the initiator.

This question belongs to: Science Biology
Question #2
Which of the following statements about the pituitary gland is correct?
A. It is often called the master gland.
B. It produces insulin.
C. It is located in the abdomen.
D. It is not connected to the hypothalamus.

Correct Answer: Option A


Explanation:
The pituitary, located at the base of the brain, controls many endocrine glands via its hormones, earning the name 'master gland'. Insulin is from pancreas; it is connected to hypothalamus by infundibulum.

This question belongs to: Science Biology
Question #3
The scientist who proposed the 'lock and key' model of enzyme action was:
A. Leonor Michaelis
B. Maud Menten
C. Daniel Koshland
D. Emil Fischer

Correct Answer: Option D


Explanation:
Emil Fischer proposed the lock-and-key model in 1894, suggesting that the enzyme's active site is exactly complementary to the substrate, like a key fits a lock. Koshland later proposed the induced fit model, which is more widely accepted. Michaelis and Menten developed enzyme kinetics equations.

This question belongs to: Science Biology