CAT Questions

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:

[15% of 300% of 560] × 2 ÷ 5 =

A) 100 B) 90
C) 85 D) 105
 
Answer & Explanation Answer: A) 100

Explanation:

[15% of 300% of 560] × 2 ÷ 5

= (15 x 300 x 560 x 2)/100 x 100 x 5

~= 100 

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Filed Under: Simplification
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Q:

Best suited for areas subject to friction, the epithelial tissue is called as

A) transitional B) simple columnar
C) straited squamous D) areolar
 
Answer & Explanation Answer: C) straited squamous

Explanation:

The number of cell layers and cell types together give rise to 6 different types of epithelial tissue.


1. Simple squamous epithelia

2. Simple cuboidal epithelia

3. Simple columnar epithelia

4. Stratified squamous epithelia

5. Stratified cuboidal epithelia

6. Stratified columnar epithelia

 

Stratified squamous epithelia is best suited for areas subject to friction.

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Filed Under: Biology
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Q:

Which among the following minerals is also known as Horn Silver?

A) Silver Chroride B) Zinc Phosphate
C) Silver Iodide D) Silver Sulphide
 
Answer & Explanation Answer: A) Silver Chroride

Explanation:

Silver chloride is a chemical compound with the chemical formula AgCl is also called as Horn Silver. It is also called as cerargyrite. It is a gray, very heavy halide mineral and an ore of silver.

Which_among_the_following_minerals_is_also_known_as_Horn_Silver1560942904.jpg image

 

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Filed Under: Chemistry
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Q:

Pitot tube is used to measure

A) static pressure B) velocity at stagnation point
C) stagnation pressure D) dynamic pressure
 
Answer & Explanation Answer: C) stagnation pressure

Explanation:

pitot_tube_is_used_to_measure1547641298.jpg image

Pitot tube is used to measure stagnation pressure.

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Filed Under: Physics
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Q:

In an army selection process, the ratio of selected to unselected candidates was 6:1. If 30 less had applied and 10 less selected, the ratio of selected to unselected would have been 7:1. How many candidates had applied for the process?

A) 910 B) 1820
C) 455 D) 2730
 
Answer & Explanation Answer: A) 910

Explanation:
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Filed Under: Ratios and Proportions
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Q:

Total Output is a synonym for

A) aggregate demand B) gross domestic product
C) aggregate supply D) equilibrium
 
Answer & Explanation Answer: C) aggregate supply

Explanation:

Total Output is a synonym for Aggregate supply or Initial production.

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Filed Under: Indian Economy
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Q:

What do lines of latitude measure?

A) east-west position between the poles B) north-south position between the poles
C) north-east position between the poles D) south-west position between the poles
 
Answer & Explanation Answer: B) north-south position between the poles

Explanation:

Lines of latitude measure north-south position between the poles.

 

Lines of latitude are imaginary reference lines that describe how far north or south a location on the Earth is from the Equator. The equator is defined as 0 degrees, the North Pole is 90 degrees north, and the South Pole is 90 degrees south. Lines of latitude are all parallel to each other, thus they are often referred to as parallels.

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Filed Under: World Geography
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