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 Biology Questions

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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:

Asterias (Star fish), Echinus (Sea urchin), Antedon (Sea Lily) are all examples of which Phylum?

A) Echinodermata B) Annelida
C) Platyhelminthes D) Arthropoda
 
Answer & Explanation Answer: A) Echinodermata

Explanation:
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Q:

Where are the proteins of the electron transport chain located?

A) mitochondrial matrix B) mitochondrial inner membrane
C) mitochondrial outer membrane D) mitochondrial intermembrane space
 
Answer & Explanation Answer: B) mitochondrial inner membrane

Explanation:

The proteins of the electron transport chain are present in mitochondrial inner membrane in Eukaryotes.

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Q:

Mangroves are plants that have

A) Modified Roots B) Modified Stems
C) Respiratory Roots D) Respiratory Stems
 
Answer & Explanation Answer: C) Respiratory Roots

Explanation:
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Q:

Where the mature sperm are produced?

A) Scrotum B) Vas deferens
C) Prostate gland D) Testes
 
Answer & Explanation Answer: D) Testes

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Q:

Which is a difference between proteins and carbohydrates and fats?

A) Proteins are composed of monomers; carbohydrates and fats are not. B) Excess carbohydrates and fats are stored; excess proteins are not.
C) Proteins are macromolecules; carbohydrates and fats are not. D) Carbohydrates and fats contain carbon, hydrogen, and oxygen; proteins do not.
 
Answer & Explanation Answer: B) Excess carbohydrates and fats are stored; excess proteins are not.

Explanation:

All proteins, carbohydrates and fats are macronutrients that we need to make living. They contribute to 90% of the dry weight of our diet. 

 

From the given options, Excess carbohydrates and fats are stored; excess proteins are not.

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Q:

Insulin is a kind of _____

A) hormone B) protein
C) enzyme D) vitamin
 
Answer & Explanation Answer: A) hormone

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Q:

Nereis, Pheretima (Earthworm) and Hirudinaria (blood sucking leech) are examples of which Phylum?

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

Explanation:
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