NMMS - National Means-cum-Merit Scholarship Science: Cell Structure and Microorganisms Questions and Answers

Question 1

A student observes a cell under a microscope and notes the presence of a cell wall, a large central vacuole, and chloroplasts.
Based on these observations, the student should conclude that the cell is most likely from which type of organism?

Accepted Answer

A plant

Answer

A fungus

Answer

An animal

Answer

A bacterium

Question 2

Which of the following correctly matches the cell organelle with its primary function?

Accepted Answer

Nucleus - Controls all cellular activities

Answer

Ribosome - Energy production

Answer

Mitochondrion - Protein synthesis

Answer

Cell Membrane - Produces lipids

Question 3

A food scientist is working on a new method of food preservation that involves removing as much water as possible from the food product. This method is effective because it inhibits the growth of microorganisms primarily by:

Accepted Answer

Limiting the water available for microbial metabolic processes

Answer

Increasing the food's acidity

Answer

Removing the oxygen that microbes need

Answer

Lowering the temperature to freezing

Question 4

Which of the following diseases is caused by a protozoan and is commonly transmitted by mosquitoes?

Accepted Answer

Malaria

Answer

Tuberculosis

Answer

Cholera

Answer

Typhoid

Question 5

A student notices that when dough is prepared for making bread, it increases in volume if left in a warm place for a few hours. Which microorganism is responsible for this process, and what is the process called?

Accepted Answer

Yeast, Fermentation

Answer

Bacteria, Decomposition

Answer

Algae, Photosynthesis

Answer

Virus, Replication

Question 6

Which of the following statements accurately describes a key difference between a virus and a bacterium?

Accepted Answer

Bacteria have a cellular structure with organelles, while viruses are non-cellular and much simpler.

Answer

Bacteria are multicellular, while viruses are unicellular.

Answer

Viruses can reproduce on their own, whereas bacteria require a host cell.

Answer

Viruses cause diseases like typhoid, while bacteria cause the common cold.

A student observes a cell under a microscope and notes the presence of a cell wall, a large central vacuole, and chloroplasts.Based on these observations, the student should conclude that the cell is most likely from which type of organism?

A student observes a cell under a microscope and notes the presence of a cell wall, a large central vacuole, and chloroplasts.
Based on these observations, the student should conclude that the cell is most likely from which type of organism?