Questions

Q:

Is Osmosis Active or Passive?

Answer

Osmosis is the process in which water molecules move from a region of higher water potential to a region of lower potential down a water potential gradient across a partially permeable membrane. It doen't requires any additional energy to do this work. 


So, Osmosis is a Passive.


 


Active and passive transport processes are two ways molecules and other materials move in and out of cells and cross intracellular membranes.


1. Active transport is the movement of molecules or ions against a concentration gradient (from an area of lower to higher concentration), which does not ordinarily occur, so enzymes and energy are required.


2. Passive transport is the movement of molecules or ions from an area of higher to lower concentration. Passive transport occurs because of the entropy of the system, so additional energy isn't required for it to occur.



3. Active transport requires energy to proceed, while passive transport does not require the input of extra energy to occur.

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Subject: Chemistry Exam Prep: AIEEE , Bank Exams
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Q:

Which statement describes decomposers?

A) Decomposers are insignificant organisms in the ecosystem and can be absent in some ecosystems. B) Decomposers can produce their own source of energy and can sometimes act as primary producers.
C) Decomposers are those organisms that recycle matter in the ecosystem.. D) All the above
 
Answer & Explanation Answer: C) Decomposers are those organisms that recycle matter in the ecosystem..

Explanation:

Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition.

 

The statement "Decomposers are those organisms that recycle matter in the ecosystem" describes decomposers.

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Filed Under: Biology
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Q:

Red Indians called this local wind  Ice Eater?

A) Mistral B) Chinook
C) Foehn D) Haramattan
 
Answer & Explanation Answer: B) Chinook

Explanation:
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Filed Under: World Geography

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Q:

What is a primary benefit of location targeting?

Answer

The ability to target combinations of countries, territories, and regions.

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Q:

Carbon in the ocean originates from the atmosphere.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

True, the given statement that Carbon in the ocean originates from the atmosphere is absolutely correct. Carbondi oxide in the atmosphere is absobed by the ocean surface and is dissolved as inorganic carbon in the oceans.

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Subject: General Science
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Q:

Is vitamin B12 fat soluble?

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

Vitamin B12 is the only water-soluble vitamin that can be stored in the liver for many years. There are 9 water soluble vitamins.

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Subject: General Science
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Q:

For Gamma radiation, what stops its penetrating abilities?

A) Lead B) Steal
C) Concrete D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The highly energetic gamma particles can penetrate most compounds that stop by other types of radiation. However, lead, steel, or concrete can reduce the high energy of these particles, making them less penetrating.

 

Hence, Gamma radiation can be stopped by a several inches of lead or steel, or several meters of concrete.

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Filed Under: Physics
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Q:

In a confederal system of government, power is

A) with States B) with Central
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) with States

Explanation:

Government can be classified in three manners:

(1) who participates,

(2) geographic distribution of power, and

(3) legislative/executive relationship.

 

Who can participate is generally broken down into two forms of government,

democracy or dictatorship

 

While the legislative/executive relationship is broken down into

presidential or parliamentary

 

The geographic distribution of power is broken down into unitary, federal, and confederation (confederal).


Confederal System of Government ::

A system of government where power is located with the independent states and there is little power in the central government.

 

Today, no nation follows a confederal system. Organizations, like the European Union and the Commonwealth of Independent States, are based on the ideas of a confederal system. Several nations make up these organizations, but they still retain the majority of their independence.

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Filed Under: Indian Politics
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