Glycogen is a polysaccharide primarily stored in: MCQ with Answer and Explanation

Glycogen is a polysaccharide primarily stored in:
A. Bacterial cell membranes
B. Fungal cell walls
C. Animal liver and muscle cells
D. Plant cells
Answer: Option C
Solution (By JKExamLibrary)
Glycogen is a highly branched polysaccharide of glucose, often referred to as 'animal starch'. It is the primary storage form of carbohydrates in animals and fungi. It is mainly stored in the liver and muscle cells. When blood glucose levels drop, glycogen is broken down (glycogenolysis) to release glucose for energy.

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Practice More Biology Questions

Question #1
The silkworm, Bombyx mori, feeds exclusively on the leaves of which plant during its larval stage?
A. Eucalyptus
B. Mulberry (Morus alba)
C. Castor
D. Teak

Correct Answer: Option B


Explanation:
The domesticated silkworm, Bombyx mori, is a monophagous insect, meaning it feeds almost exclusively on the fresh leaves of the mulberry plant (primarily Morus alba). The quality and quantity of silk produced are directly dependent on the quality of the mulberry leaves consumed by the larvae. While tasar silkworms feed on oak and castor, the common mulberry silkworm requires Morus alba.

This question belongs to: Science Biology
Question #2
The 'Hormone Progesterone' is primarily responsible for maintaining pregnancy. During the menstrual cycle, its levels are highest during the:
A. Follicular (proliferative) phase
B. Menstrual phase
C. Ovulation phase
D. Luteal (secretory) phase

Correct Answer: Option D


Explanation:
Progesterone is the primary hormone of the luteal phase (also called the secretory phase) of the menstrual cycle. After ovulation, the ruptured Graafian follicle transforms into the corpus luteum, which secretes large amounts of progesterone. Progesterone prepares and maintains the uterine endometrium (thickening it, increasing blood supply, and stimulating glandular secretion) for the potential implantation of a fertilized egg. If pregnancy does not occur, the corpus luteum degenerates, progesterone levels drop, and menstruation begins.

This question belongs to: Science Biology
Question #3
Which of the following is the correct sequence of taxonomic hierarchy from lowest to highest?
A. Species → Genus → Order → Family → Class → Phylum → Kingdom
B. Species → Family → Genus → Order → Class → Phylum → Kingdom
C. Species → Genus → Family → Order → Class → Phylum → Kingdom
D. Genus → Species → Family → Order → Class → Phylum → Kingdom

Correct Answer: Option C


Explanation:
The correct taxonomic hierarchy in ascending order is: Species (lowest) → Genus → Family → Order → Class → Phylum (or Division in plants) → Kingdom (highest). Some classifications add Domain above Kingdom. This system groups organisms based on shared characteristics. Binomial nomenclature uses Genus and Species. Option A correctly places Family before Order.

This question belongs to: Science Biology