Biology Questions

Q:

The energy in most ecosystems comes from

A) Water B) Carbon dioxide
C) Sun D) Soil
 
Answer & Explanation Answer: C) Sun

Explanation:

The energy in most ecosystems comes from sun light.

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Q:

Dysfunctional behaviors are maladaptive which means that they

A) are medicated B) interfere with everyday life
C) cause of stress D) all of the above
 
Answer & Explanation Answer: B) interfere with everyday life

Explanation:

Dysfunctional behaviors are maladaptive which means that they interfere with everyday life.

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Q:

The fluid mosaic model describes the structure of

A) cell B) plasma membrane
C) nucleus D) All of the above
 
Answer & Explanation Answer: B) plasma membrane

Explanation:
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Q:

Which of the following vitamins is synthesized by intestinal bacteria?

A) Vitamin B B) Vitamin A
C) Vitamin D D) Vitamin K
 
Answer & Explanation Answer: D) Vitamin K

Explanation:

Most of the Vitamin K is synthesized by intestinal bacteria in the large intestine.

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Q:

One function of sphincter muscles is to

A) secrete digestive juices into the GI tract B) grind large food particles
C) trigger hormone release D) control the passage of food through the GI tract
 
Answer & Explanation Answer: D) control the passage of food through the GI tract

Explanation:
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Q:

What are the building blocks of Nucleic Acids?

A) Pentose Sugar B) DNA
C) RNA D) Nucleotides
 
Answer & Explanation Answer: D) Nucleotides

Explanation:

The building blocks of the nucleic acids are "Nucleotides".

 

Each nucleotide are composed of three parts. They are ::

1.Pentose sugar

2.Nitrogenous bases

3.Phosphoric acid.

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Q:

Which one of the following pairs about organ/part that helps in locomotion is not correctly matched?

A) Euglena : Flagellum B) Paramecium : Cilia
C) Nereis : Pseudopodia D) Starfish : Tubefeet
 
Answer & Explanation Answer: C) Nereis : Pseudopodia

Explanation:

Euglena move by a flagellum (plural ‚ flagella), which is a long whip-like structure that acts like a little motor.

The paramecium uses its cilia to sweep the food along with some water into the cell mouth after it falls into the oral groove.

The underside of the starfish is covered with hundreds of tube feet, which it uses for walking around, for attaching tightly to rocks, and for holding on to prey.

Nereis possess setae and parapodia for locomotion

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Q:

Which among the following blood protein regulates the amount of water in plasma?

A) Albumin B) Fibulin
C) Globulin D) Fibrin
 
Answer & Explanation Answer: A) Albumin

Explanation:

The blood protein Albumin regulates the amount of water in plasma.

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