Biology Questions

Q:

Which of the following is an Autoimmune disease?

A) Systematic lupus erythematosus B) Acute anaphylaxis
C) Farmer's lung D) A heart attack
 
Answer & Explanation Answer: A) Systematic lupus erythematosus

Explanation:

An autoimmune disease is a condition in which your immune system mistakenly attacks your body.

 

The immune system normally guards against germs like bacteria and viruses. When it senses these foreign invaders, it sends out an army of fighter cells to attack them. Normally, the immune system can tell the difference between foreign cells and your own cells.

 

In an autoimmune disease, the immune system mistakes part of your body — like your joints or skin — as foreign. It releases proteins called autoantibodies that attack healthy cells. Some autoimmune diseases target only one organ. Type 1 diabetes damages the pancreas. Other diseases, like lupus, affect the whole body.

 

Hence, Systematic lupus erythematosus is an autoimmune disease that affects multiple organs.

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Q:

Higher doses of barbiturates result in

A) Lack of emotional control B) Impaired thinking
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:
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Q:

The term aerotolerant anaerobe refers to an organism that

A) uses oxygen or grows without oxygen. B) requires more oxygen than is present in air.
C) does not use oxygen but tolerates it. D) requires less oxygen than is present in air.
 
Answer & Explanation Answer: C) does not use oxygen but tolerates it.

Explanation:
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Q:

Closely stacked flattened sacs (plants only)

A) Vacuoles B) Lysosomes
C) Golgi apparatus D) None of the above
 
Answer & Explanation Answer: C) Golgi apparatus

Explanation:
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Q:

The functional unit of the nervous system is the

A) Nephrons B) Axons
C) Neurons D) All of the above
 
Answer & Explanation Answer: C) Neurons

Explanation:

Neurons are the functional units of the nervous system in the body.

the_functional_unit_of_the_nervous_system_is_the1535026518.png image

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Q:

Which of the following organelle is known as the 'Power House' of the cell?

A) Golgi Bodies B) Ribosomes
C) Mitochondria D) None of these
 
Answer & Explanation Answer: C) Mitochondria

Explanation:

Mitochondria are known as 'Power House' of the cell because they produce energy in the form of ATP.

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Q:

Foods that allow micro organisms to grow are called Parasites.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

No, the given statement is False.


Parasites are organisms that feed on other organisms causing harm to them.


Foods that allow micro organisms to grow are called Growth Mediums.

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Q:

Which statement regarding the mammalian heart is correct?

A) Blood is pumped from the heart via the atria. B) Oxygen-loaded blood moves only through the right side of the heart.
C) When the right atrium contracts, it forces blood into the left atrium. D) In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs.
 
Answer & Explanation Answer: D) In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs.

Explanation:

In the adult heart, blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs is correct regarding mammalian heart.

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