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Cell membrane is

A. permeable

B. semipermeable

C. selectively permeable

D. impermeable

Correct Answer :

B. semipermeable


Related Questions

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Glass is made from the mixture of

A. Quartz and mica

B. Sand and salt

C. Sand and silicates

D. None of these

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The oxide of Nitrogen used in medicine as anaesthetic is

A. Nitric oxide

B. Nitrogen dioxide

C. Nitrogen pentoxide

D. Nitrous oxide

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The Panda belongs to the same family as that of

A. Cat

B. Bear

C. Rabbit

D. Dog

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The type of glass used in making prisms and lenses is

A. Pyrex glass

B. Soft glass

C. Flint glass

D. Jena glass

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The metal used in storage batteries

A. Zinc

B. Iron

C. Copper

D. Lead

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Apparatus invented by Archimedes is :

A. Pulley

B. Microscope

C. Thermemoter

D. Barometer

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Which of the following is commonly called a polyamide ?

A. Orion

B. Terylene

C. Rayon

D. Nylon

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In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is

A. an AND circuit

B. an OR circuit

C. a high-pass filter

D. a NOR circuit

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Cell membrane is

A. permeable

B. semipermeable

C. selectively permeable

D. impermeable

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The removal of top soil by water or wind is called

A. Soil erosion

B. Soil wash

C. Silting of soil

D. Soil creep

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The solar eclipse occurs when

A. the sun comes in between the moon and the earth

B. the moon comes in between the sun and the earth

C. the earth comes in the between the sun and the moon

D. None of the above

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Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called

A. Carbon Monoxide

B. Phosgene

C. Phosphine

D. None of these

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Pollination by birds is called

A. autogamy

B. entomophily

C. anemophily

D. ornithophily

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The colour of Emerald is

A. Deep Green

B. Violet

C. Prussian Blue

D. Yellow

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In an atomic nucleus, neutrons and protons are held together by

A. Magnetic forces

B. Gravitational forces

C. Coulombic forces

D. Exchange forces

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The recent atomic weight scale is based on

A. 1H1

B. 1H2

C. 6C12

D. 8O16

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What is the unit for measuring the pitch or frequency of sound ?

A. Coulomb

B. Hum

C. Cycles

D. Decible

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Rust is

A. A mixture of FeO and Fe(OH)2

B. A mixture of Fe2O3 and Fe(OH)2

C. A mixture of Fe2O3, 3H2O and FeO

D. FeO only

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The hardest substance available on earth is

A. Platinum

B. Quartz

C. gold

D. Diamond

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The accumulation of stress along the boundaries of lithospheric plates results in which of the following?

A. Earthquakes

B. Magnetic reversals

C. Hurricanses

D. Increased deposition of deep-sea sediments

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Quartz crystals normally used in quartz clocks etc. is chemically

A. A mixture of B and C

B. Silicon dioxide

C. Germenium dioxide

D. Sodium Silicate

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The speed of light with the rise in the temperature of the medium

A. Increases

B. Remains unaltered

C. Drops sharply

D. Decreases

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The metal that is present in Photo Films is

A. Silver

B. Magnesium

C. Platinium

D. Mercury

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One fathom is equal to

A. 6 feet

B. 6 metres

C. 60 cms

D. 60 feet

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Which of the following elements is a metal

A. S

B. Ga

C. Se

D. I

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Nitrification means

A. Conversion of nitrogen to nitric acid.

B. Production of nitrogen from air

C. Convert the atmospheric nitrogen to effective nitrogen compound.

D. Liquifaction of nitrogen

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The intencity of Earthquakes is measured on

A. Beaufort scale

B. Secant scale

C. Mercalli scale

D. Richter scale

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Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?

A. A piece of iron that is not a permanent magnet

B. The north pole of another permanent magnet

C. A positively charged glass rod

D. A negatively charged rubber rod

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Which of the following elements is obtained from sea weeds ?

A. Argon

B. Vanadium

C. Iodine

D. Sulphur

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The marine animal called dugong which is vulnerable to extinction is a/an

A. Amphibian

B. Shark

C. Bony fish

D. Mammal