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 Biology Questions

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Q:

Salts and sugars work to preserve foods by creating a

A) Hypertonic environment B) Lower pH
C) Depletion of nutrients D) Lower osmotic pressure
 
Answer & Explanation Answer: A) Hypertonic environment

Explanation:

Salts and sugars work to preserve foods by creating a Hypertonic environment.

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Q:

Factors that aid venous return include all except

A) pressure changes in the thorax B) urinary output
C) activity of skeletal muscles D) venous valves
 
Answer & Explanation Answer: B) urinary output

Explanation:
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Q:

The C shape of the tracheal cartilages is important because

A) divide the nasal cavity B) Allows for expansion or contraction of the trachea
C) provide a surface for the sense of smell D) All of the above
 
Answer & Explanation Answer: B) Allows for expansion or contraction of the trachea

Explanation:

Allows for expansion or contraction of the trachea. Hence, so large masses of food can pass through the esophagus during swallowing.

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Q:

Cellulose is a major component of the

A) Pythium B) Pseudomonas
C) Xanthomonas D) Saccharomyces
 
Answer & Explanation Answer: A) Pythium

Explanation:
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Q:

In photosynthesis________

A) Light energy is converted into chemical energy B) Chemical energy is converted into Light energy
C) Chemical energy is converted into electrical energy D) Light energy is converted into Mechanical energy
 
Answer & Explanation Answer: A) Light energy is converted into chemical energy

Explanation:
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Q:

The purpose of hydrogenating unsaturated fats is to

The_purpose_of_hydrogenating_unsaturated_fats_is_to1552999400.jpg image

A) to make them more solid at room temperature B) to recommend daily intake as fiber
C) to make them more liquid D) None of the above
 
Answer & Explanation Answer: A) to make them more solid at room temperature

Explanation:

The purpose of hydrogenating unsaturated fats is to make them more solid at room temperature as it is easy store the product.

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Q:

Limbs of frog, lizard, bird and human are example of ______ organs.

A) Homogenous B) Heterogeneous
C) Analogous D) Homologous
 
Answer & Explanation Answer: D) Homologous

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Q:

The peripheral nervous system consists of

A) Nerves from eyes to CNS B) Nerves from ears to CNS
C) Nerves from skin to CNS D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:
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