MIC | MCQs

Explanation

In 1827, Robert Brown observed the random movement of pollen grains suspended in water under a microscope.

This phenomenon was later termed Brownian motion, describing the erratic motion of particles in a fluid.

Explanation

Protozoa are often studied under parasitology because many are parasites causing diseases like malaria and amoebiasis.

Though protozoa are microorganisms, their parasitic nature makes them a key focus in parasitology.

Explanation

Gram staining is commonly used to identify Staphylococcus aureus, which appears as Gram-positive (purple) cocci in clusters.

This basic test helps differentiate it from other bacteria early in diagnosis.

Explanation

Penicillium is a genus of fungi known for its role in the production of the antibiotic penicillin.

It is commonly found on decaying fruits, bread, and other organic matter.

Explanation

Bacteria are the most abundant living organisms on Earth, found in nearly every environment, from the deep ocean to the human body.

Their sheer numbers and ability to thrive in various conditions make them the most numerous form of life on the planet.

Explanation

Bacteria and fungi are decomposers that break down dead plants and animals.

They recycle nutrients back into the ecosystem, maintaining ecological balance.

Explanation

Cell wall is not a part of animal cells; it is found only in plant, fungal, and bacterial cells.

Animal cells have a cell membrane, cytoplasm, and vacuole (though smaller than in plant cells).

Explanation

Centrioles are typically found in animal cells, not in most plant cells.

Plant cells do have chloroplasts, mitochondria, and a cell membrane.

Explanation

Beneficial bacteria in the large intestine, especially E. coli, help synthesize Vitamin K.

This vitamin is essential for blood clotting and maintaining bone health.

Explanation

Rhizopus is a genus of mold that belongs to the kingdom Fungi.

It is commonly found on bread, fruits, and decaying organic matter.

It reproduces through spores.

It is known for its role in food spoilage and some industrial applications.