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 Biology Questions

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Q:

The exit of food from the stomach is regulated by a ______ muscle.

A) cardiac B) sphincter
C) skeletal D) No option is correct
 
Answer & Explanation Answer: B) sphincter

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Q:

Homeostasis is the condition in which the body maintains

A) a relatively stable internal environment within limits B) a changing state within an unlimited range
C) the lowest possible energy usage D) a static state with no deviation from preset points
 
Answer & Explanation Answer: A) a relatively stable internal environment within limits

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Q:

What is the shape of the two guard cells which enclose stomata?

A) Oval B) Triangular
C) Rectangular D) Kidney shaped
 
Answer & Explanation Answer: D) Kidney shaped

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Q:

Blood flow to a tissue will increase if the

A) pH rises B) Level of carbon dioxide at the tissue increases
C) Vessels constrict D) Level of oxygen at the tissue increases
 
Answer & Explanation Answer: B) Level of carbon dioxide at the tissue increases

Explanation:

The movement of blood in the body is called blood flow. The blood flows through the vessels, tissues and organs. Blood flow to a tissue will increase if the level of carbon dioxide at the tissue increases.

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Q:

Cadaver refers to ___a clinically

A) alive human being B) a dead human body used for anatomy
C) a live human being used for trial D) resurrected human body
 
Answer & Explanation Answer: B) a dead human body used for anatomy

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Q:

A few organisms can tolerate and thrive in a narrow range of temperatures. Such organisms are called ___________.

A) Osmotic B) Eurythermal
C) Stenothermal D) Hydrothermal
 
Answer & Explanation Answer: C) Stenothermal

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Q:

Which among the following is used to treat Indigestion?

A) Antacid B) Antiseptic
C) Analgesic D) Antibiotic
 
Answer & Explanation Answer: A) Antacid

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Q:

Which among the following is also called as 'power house of the cell'?

A) Plastids B) Mitochondria
C) Golgi bodies D) Cell wall
 
Answer & Explanation Answer: B) Mitochondria

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