Biology Questions

Q:

A sudden loss of memory is a symptom of

A) Alzheimer's B) Dementia
C) Amnesia D) None of the above
 
Answer & Explanation Answer: C) Amnesia

Explanation:

A sudden loss of memory is a symptom of Amnesia which is caused by an injury or damage to our brain. In that situation we cannot remember about ourself and our life.

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Q:

Adamsia (Sea anemone), Pennatula (Sea-pen) are examples of which Phylum?

A) Coelenterata B) Aschelminthes
C) Annelida D) Arthropoda
 
Answer & Explanation Answer: A) Coelenterata

Explanation:
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Q:

Which of these is a human disease caused by bacteria?

A) TB B) Ascariasis
C) Chickenpox D) Common cold
 
Answer & Explanation Answer: A) TB

Explanation:

Bacteria which causes disease are called Pathogenic Bacteria. TB is caused by bacteria.

 

Some of the diseases caused by bacteria are::

1. Tuberculosis, TB (affects the lungs)

2. Salmonella (causes food poisoning)

3. Whooping cough (affects the lungs)

4. Septic Sore Throat

 

 

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Q:

Dynamic equilibrium receptors are found in the

A) Vestibule B) Maculae
C) Semicircular Canals D) Cupula
 
Answer & Explanation Answer: C) Semicircular Canals

Explanation:

Dynamic equilibrium receptors are found in the Semicircular Canals. It monitors angular or rotational movements of the head when the body ismoving, such as a figure skater’s spinning, but maintaining balance.

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Q:

A dissecting aortic aneurysm occurs when

A) The inner layers of the aorta become separated B) The aorta ruptures, resulting in profound bleeding
C) All layers of the aorta suddenly contract D) None of the above
 
Answer & Explanation Answer: A) The inner layers of the aorta become separated

Explanation:

A dissecting aortic aneurysm occurs when the inner layers of the aorta become separated.

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Q:

In which of the following part of the cell does the pyruvic acid is broken down into carbon dioxide, water and energy?

A) Cytoplasm B) Nucleus
C) Mitochondria D) Chloroplast
 
Answer & Explanation Answer: C) Mitochondria

Explanation:
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Q:

Humans cannot digest cellulose because they

Answer

Humans cannot digest cellulose because they are lacking with the enzymes responsible to breakdown the beta acetal linkages.

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Q:

All of the following are polysaccharides except

A) Chitin B) Lactose
C) Glycogen D) Cellulose
 
Answer & Explanation Answer: B) Lactose

Explanation:
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