Questions

Q:

At what temperature do pathogenic bacteria grow best in food?

A) 5 to 15 degrees Celsius B) 15 to 25 degrees Celsius
C) 20 to 45 degrees Celsius D) 40 to 65 degrees Celsius
 
Answer & Explanation Answer: C) 20 to 45 degrees Celsius

Explanation:

The Bacteria that causes Food Borne illness are called Food Borne Pathogens. Most of the pathogens are mesophilic in nature, optimum temperature may be around 20-45 degree celsius. This range of temperatures is often called the "Danger Zone." Dry foods do not support the growth of bacteria.

 

In order to kill pathogenic bacteria you need temperatures above 74ºC. Temperature is the easiest factor to control in order to prevent bacterial growth.

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Filed Under: Biology
Exam Prep: Bank Exams , AIEEE
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Q:

Which of these is Not a Carcinogen?

A) Cadmium B) Asbestos
C) Benzene D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Asbestos can cause

    •  Lungs
    • Gastrointestinal tract  types of Cancer.

Benzene can cause

    • Leukemia
    • Hodgkin's lymphoma types of Cancer.

Cadmium can cause

    • Prostate type of Cancer.
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Filed Under: Biology
Exam Prep: Bank Exams , AIEEE
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Q:

Which results from an increase in the greenhouse effect?

A) Ocean acidification B) Smog pollution
C) Ozone depletion D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

A greenhouse gas (GHG) is any gas in the atmosphere that absorbs and emits radiation in the thermal infrared range.

 

The increase in average global temperatures that results from an enhanced greenhouse effect.

Effects of increased greenhouse gas emissions:

Increases in the different greenhouse gases have other effects apart from global warming including ocean acidification, smog pollution, ozone depletion as well as changes to plant growth and nutrition levels.

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Filed Under: General Awareness
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Q:

In a plant cell, DNA may be found in

A) only in the nucleus and mitochondria. B) only in the nucleus and chloroplasts
C) in the nucleus, mitochondria, and chloroplasts. D) only in the nucleus.
 
Answer & Explanation Answer: C) in the nucleus, mitochondria, and chloroplasts.

Explanation:

All of the genetic information in a cell was initially thought to be confined to the DNA in the chromosomes of the cell nucleus.

It is now known that small circular chromosomes, called extranuclear, or cytoplasmic, DNA, are located in two types of organelles found in the cytoplasm of the cell.

These organelles are the mitochondria in animal and plant cells and the chloroplasts in plant cells.

Chloroplast DNA (cpDNA) contains genes that are involved with aspects of photosynthesis and with components of the special protein-synthesizing apparatus that is active within the organelle.

Mitochondrial DNA (mtDNA) contains some of the genes that participate in the conversion of the energy of chemical bonds into the energy currency of the cell—a chemical called adenosine triphosphate (ATP)—as well as genes for mitochondrial protein synthesis.

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Filed Under: General Science
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Q:

A project in PMP can be defined as a :

A) Permanent endeavor that produces repetitive outputs B) Temporary endeavor undertaken to create a unique product, service, or result
C) Permanent endeavor undertaken to create a unique product, service, or result D) Temporary endeavor that produces repetitive outputs
 
Answer & Explanation Answer: B) Temporary endeavor undertaken to create a unique product, service, or result

Explanation:
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Q:

What is one benefit of not using a predetermined budget for AdWords advertising, compared to radio, print, and TV advertising?

Answer

Online campaigns are highly measurable and may be able to generate an automatic positive ROI. As long as ROI remains positive, it can be strategic to capture all traffic without a predetermined budget.

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Q:

Who was the first to sail round the world ?

A) Francis Drake B) Columbus
C) Magellan D) Vasco da Gama
 
Answer & Explanation Answer: C) Magellan

Explanation:

Magellan was a Portuguese sailor who was the first to sail round the world.

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Filed Under: World History

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Q:

Which of the following poems was/were credited to a Greek poet named Homer?

A) Iliad B) Odyssey
C) Periplus D) Both (a) and (b)
 
Answer & Explanation Answer: D) Both (a) and (b)

Explanation:

Two poems, credited to a poet named Homer, provide a great deal of information about the life and institutions of the early Greeks. The Iliad is the story of siege and destruction of the city of Troy, on the western coast of Asia miner. The Odyssey describes the adventures and return home, from troy , of a Greek hero, Odysseus.

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Filed Under: World History

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