Questions

Q:

What is the purpose of balancing chemical equations?

A) law of conservation of energy B) law of conservation of mass
C) Both A & B D) None of the above
 
Answer & Explanation Answer: B) law of conservation of mass

Explanation:

The main purpose of balancing chemical equations is to make the mass of reactants is equal to mass of products obtained after the reaction. Hence, to make law of conservation of mass is purpose of balancing chemica equations.

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Q:

Select the correct statement contrasting gametophytes and sporophytes.

A) Sporophytes are diploid, whereas gametophytes are haploid. B) Sporophytes are vascular, whereas gametophytes are nonvascular.
C) Sporophytes are larger than gametophytes. D) All of the above
 
Answer & Explanation Answer: A) Sporophytes are diploid, whereas gametophytes are haploid.

Explanation:

Sexual reproduction results in gametes that combine two cells from different individuals. Meiosis also produces gametes. Haploids contain one set of chromosomes in each of their cells. Diploids cells contain two chromosome sets. For plants, haploid and diploid cells divide via mitosis. The plants’ haploid phase is called the gametophyte, and the diploid phase is called the sporophyte.

 

Sporophytes are diploid plants that use meiosis to produce spores. These spores are haploid cells that grow into haploid gametophytes. Megaspores grow into female gametophytes, and microspores grow into male gametophytes.

 

Gametophytes are haploid plants that use mitosis to make haploid gametes. These gametes are female in the form of an ovum (egg) or male in the form of sperm.

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Filed Under: Biology
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Q:

A viral species is a group of viruses that

A) same ecological niche B) same genetic information
C) both A & B D) None of the above
 
Answer & Explanation Answer: C) both A & B

Explanation:
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Q:

Which virus is not associated with cancer?

A) Epstein-Barr virus B) Papillomavirus
C) Retrovirus D) Hepatitis virus
 
Answer & Explanation Answer: C) Retrovirus

Explanation:

In the above given options, Retrovirus is the only virus which is not associated with cancer. Here the viruses which are associated with different types of cancer. They are:

Hepatitis virus which is associated with Liver cancer

Papillomavirus which is associated with Cervical cancer

Epstein-Barr virus which is associated with Burkitt's lymphoma.

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Q:

The acid used in lead storage cells is

A) Sulphuric acid B) Nitric acid
C) Hydrochloric acid D) Phosphoric acid
 
Answer & Explanation Answer: A) Sulphuric acid

Explanation:

The acid used in lead storage cells is Sulphuric acid. They are used car batteries. Lead-acid batteries are capable of being recharged, which is important for their use in cars.

the_acid_used_in_lead_storage_cells_is1545132418.jpg image

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Q:

Sociological analysis of religion is concerned with

A) the purpose of life B) which religions are true and which are false
C) learning the will of God D) patterns of religious activity and their effect on social life
 
Answer & Explanation Answer: D) patterns of religious activity and their effect on social life

Explanation:

Sociology of religion is the study of the beliefs, practices and organizational forms of religion using the tools and methods of the discipline of sociology.

 

Hence, Sociological analysis of religion is concerned with patterns of religious activity and their effect on social life.

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Q:

Thermoplastic materials are those materials which

A) Do not become hard with the application of heat and pressure and no chemical change occurs B) Are flexible and can withstand considerable wear under suitable conditions
C) Are formed into shape under heat and pressure and results in a permanently hard product D) Are used as a friction lining for clutches and brakes
 
Answer & Explanation Answer: A) Do not become hard with the application of heat and pressure and no chemical change occurs

Explanation:

Thermoplastic materials is a type of plastic material that can be cooled and heated several times without any change in their chemistry or mechanical properties.

 

Examples of Thermoplastic ::

 

  • polyethylene,
  • polypropylene,
  • polyvinyl chloride,
  • polystyrene,
  • polybenzimidazole,
  • acrylic,
  • nylon and
  • teflon
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Q:

What is true about personal financial planning?

A) Personal financial planning is the process of creating and achieving financial goals B) Our financial decisions decrease once we reach adulthood
C) A family's resources are unlimited D) There are two means for achieving financial goals—you either need to increase your spending or reduce savings
 
Answer & Explanation Answer: A) Personal financial planning is the process of creating and achieving financial goals

Explanation:

Personal financial planning is the process of creating and achieving financial goals.

 

True statements regarding personal financial planning:

As we age, the number and complexity of the financial decisions that we make increases.

There are two means for achieving financial goals—you either need to increase your savings or reduce spending.

A family's resources are limited.

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