Questions

Q:

Name the two main types of Fermentation?

Answer

Fermentation is the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.


 


The two most common types of fermentation are


(1) alcoholic fermentation (and) 


(2) lactic acid fermentation.


 


(1) Alcoholic fermentation : the type of fermentation in which ethyl alcohol is the main end product .This is very common in yeast (unicellular fungus) and also seen in some bacteria. Yeast cells release enzymes called zymase complex which bring about the fermentation. The reactions are similar to anaerobic respiration.


 


(2) Lactic acid fermentation : The type of fermentation in which lactic acid is the end product.


It is carried out by some bacteria (e.g. lactic acid bacteria), and also by animals (muscle glycolysis in animals, under oxygen deficiency, results in the formation of lactic acid this is whay we experience in muscle cramps, or "Charley horse").

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Subject: Biology Exam Prep: AIEEE , Bank Exams , CAT
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Q:

Which is not a function of the cytoskeleton?

A) helps the cell move B) gives cell a shape
C) prevents chromosomes from separating D) None of the above
 
Answer & Explanation Answer: C) prevents chromosomes from separating

Explanation:

A cytoskeleton acts as a frame that gives a cell its shape, protects it to an extent, and helps with cellular motion.

 

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Q:

1 Mole of CO2 mass is

A) 32 gms B) 44 gms
C) 16 gms D) 12 gms
 
Answer & Explanation Answer: B) 44 gms

Explanation:

We know that,

Mass of Carbon = 12 gms

Mass of Oxygen = 16 gms = O2 => 16 * 2 = 32 gms

=> Mass of 1 mole of CO2 = 12 + 32 = 44 gms.

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Filed Under: Chemistry
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Q:

To which class do honey bees bees belong?

A) Insecta B) Apidae
C) Arthropoda D) Hymenoptera
 
Answer & Explanation Answer: A) Insecta

Explanation:

Honey bees bees belong to the class insects or insecta.

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Q:

Which planet is known as the Morning Star or the Evening Star?

A) Jupiter B) Venus
C) Mercury D) Saturn
 
Answer & Explanation Answer: B) Venus

Explanation:

Venus planet is known as the Morning Star or the Evening Star.

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Q:

You cannot link excel worksheet data to a word document

A) With a hyperlink B) With the copy and paste buttons on the standard toolbar
C) With the right drag method D) With the copy and paste special commands
 
Answer & Explanation Answer: B) With the copy and paste buttons on the standard toolbar

Explanation:

You cannot link excel worksheet data to a word document With the copy and paste buttons on the standard toolbar.

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Q:

Which process removes carbon dioxide from the atmosphere?

A) Combustion B) Photosynthesis
C) Respiration D) All of the above
 
Answer & Explanation Answer: B) Photosynthesis

Explanation:

Photosynthesis process removes carbon dioxide from the atmosphere. Green plants remove carbon dioxide from the atmosphere by photosynthesis. 

The level of carbon dioxide in the atmosphere is maintained by several processes, including photosynthesis, respiration and combustion. 

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Q:

Demography is the scientific study of

A) Growth of population B) The well being of populations
C) Birth and death of population D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Demography is the scientific study of Birth and death, The well being and the Growth of population. In brief, it is the study of human populations based on their size, composition and distribution across space – and the process through which populations change.

Demography_is_the_scientific_study_of1554269267.jpg image

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