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Q:

Increasing the Alveolar ventilation rate will

A) Increase the rate of carbon dioxide diffusion from the blood to the alveoli B) Decrease the partial pressure of oxygen in the alveoli
C) Increase the partial pressure of carbon dioxide in the alveoli D) Have no effect on either partial pressure or diffusion rate of gases
 
Answer & Explanation Answer: A) Increase the rate of carbon dioxide diffusion from the blood to the alveoli

Explanation:

Increasing the Alveolar ventilation rate will increase the rate of carbon dioxide diffusion from the blood to the alveoli.

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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:

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 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:

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:

Where does digestion of protein begin?

A) Mouth B) Pharynx
C) Stomach D) Liver
 
Answer & Explanation Answer: C) Stomach

Explanation:

Three main enzymes, pepsin secreted by the stomach and trypsin and chymotrypsin secreted by the pancreas, break down food proteins into polypeptides that are then broken down by various exopeptidases and dipeptidases into amino acids.

 

Hence, digestion of protein begin in stomach.

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Q:

Which of the following is true of osmosis?

A) it is a type of diffusion B) movement is against water's concentration gradient
C) requires energy D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:
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