Q:

Reflex actions are controlled by

A) The Spinal Chord	B) The Nerves
C) The cells	D) The Brain

Answer & Explanation Answer: A) The Spinal Chord

Explanation:

A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.

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Q:

How many bits are in a MAC address?

A) 64	B) 48
C) 32	D) 16

Answer & Explanation Answer: B) 48

Explanation:

MAC - Media Access Control, address is a globally unique identifier assigned to network devices, and therefore it is often referred to as hardware or physical address.

MAC addresses are 6-byte (48-bits) in length, and are written in MM:MM:MM:SS:SS:SS format.

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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

The salesman tried to(A)/sell me a solar water heater(B)/but I already have one.(C)/No error(D)

A) A	B) B
C) C	D) D

Answer & Explanation Answer: D) D

Explanation:

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Q:

Steel contains

A) no carbon	B) < 2% of carbon
C) > 10% of carbon	D) > 29% of carbon

Answer & Explanation Answer: B) < 2% of carbon

Explanation:

To make steel, iron ore is first mined from the ground. It is then smelted in blast furnaces where the impurities are removed and carbon is added.

In simple, steel is iron alloyed with carbon, usually 0 - 2%.

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Q:

What is the correct order for Respiration?

A) Election transport chain – Krebs’ cycle – glycolysis	B) Glycolysis – Krebs’ cycle – electron transport chain
C) Glycolysis – electron transport chain – Krebs’ cycle	D) The Krebs’ cycle - electron transport chain - glycolysis

Answer & Explanation Answer: B) Glycolysis – Krebs’ cycle – electron transport chain

Explanation:

Cellular respiration can be broken down into three main steps:

1. Glycolysis,

2. The Kreb's cycle (The citric acid cycle), and

3. Electron Transport Chain.

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Q:

Tides in the sea are caused by

A) Effect of Sun	B) Effect of Moon
C) Combined effect of Moon and Sun	D) Gravitational Force of Earth and Sun

Answer & Explanation Answer: C) Combined effect of Moon and Sun

Explanation:

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Q:

What has feet and legs and nothing else?

Answer

Stocking is long sock that women wore which has legs and feet and nothing else.

Workspace

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Q:

Suppose n is a positive integer such that $(n^{2} + 48)$ is a perfect square. What is the number of such n?

A) 1	B) 2
C) 3	D) 4

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