The term 'bioremediation' refers to: MCQ with Answer and Explanation

The term 'bioremediation' refers to:
A. Using plants to produce medicines
B. Using insects to control pests
C. Using animals to cure diseases
D. Using microorganisms to clean up pollutants
Answer: Option D
Solution (By JKSSB Mock Tests)
Bioremediation uses microorganisms (bacteria, fungi) or their enzymes to detoxify or remove environmental pollutants, such as oil spills, heavy metals, and pesticides. Pseudomonas species are often used. Phytoremediation uses plants. This is a branch of environmental biotechnology. It is a sustainable and cost-effective cleanup method.

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Practice More Biology Questions

Question #1
The type of muscle tissue present in the walls of blood vessels and intestine is:
A. Skeletal muscle
B. Voluntary muscle
C. Smooth muscle
D. Cardiac muscle

Correct Answer: Option C


Explanation:
Smooth muscle is non-striated, spindle-shaped, involuntary muscle found in the walls of hollow organs like intestines, blood vessels, uterus, and bladder. It controls peristalsis, vasoconstriction, and other autonomic functions. Skeletal muscle is voluntary and striated, cardiac muscle is striated but involuntary.

This question belongs to: Science Biology
Question #2
Which of the following diseases is transmitted through the bite of a rabid animal?
A. Rabies
B. Typhoid
C. Malaria
D. Tetanus

Correct Answer: Option A


Explanation:
Rabies is a viral zoonotic disease caused by the rabies virus, transmitted through the saliva of infected animals (dogs, bats, raccoons) via bites or scratches. It affects the central nervous system and is almost always fatal once symptoms appear. Post-exposure prophylaxis (wound cleaning, rabies immunoglobulin, and vaccine) is effective if given promptly.

This question belongs to: Science Biology
Question #3
Identify the INCORRECT statement about the human skeleton:
A. The skull protects the brain.
B. The rib cage protects the heart and lungs.
C. The vertebral column protects the spinal cord.
D. The humerus is a bone of the leg.

Correct Answer: Option D


Explanation:
The humerus is the upper arm bone. The femur is the thigh bone. So C is incorrect.

This question belongs to: Science Biology