Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Moss peat is used as a packing material for sending flowers and live plants to distant places because

  • it is easily available

  • it is hygroscopic

  • it reduces transpiration

  • it reduces transpiration

5274 Views

2.

A common structural feature of vessel elements and sieve tube elements is

  • thick secondary walls

  • pores on lateral walls

  • presence of P-protein

  • presence of P-protein

1345 Views

3.

The thalloid body of a slime mould (Myxomycetes) is known as

  • Autosomal

  • Cytoplasmic

  • Y-linked

  • Y-linked

1291 Views

4.

What type of placentation is seen in sweet pea?

  • Basal

  • Axile

  • Free central

  • Free central

1417 Views

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5.

Which of the following statements regarding mitochondrial membrane is not correct?

  • The outer membrane is permeable to all kinds of molecules

  • The enzymes of the electron transfer chain are embedded in the outer membrane

  • The inner membrane is highly convoluted forming a series of infoldings

  • The inner membrane is highly convoluted forming a series of infoldings


B.

The enzymes of the electron transfer chain are embedded in the outer membrane

In mitochondria, the enzymes of electron transport chain are found in the inner membrane while outer membrane contains enzymes involved in mitochondrial lipid synthesis and those enzymes that convert lipid substrates into forms that are subsequently metabolised in the matrix.
The outer membrane resembles a sieve that is permeable to all molecule of 10,000 daltons mole. weight or less including small proteins.
The inner membrane is impermeable and highly convoluted, forming a series of infoldings, known as cristate, in the matrix space.

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6.

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO2 and H2O yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal?

  • Two

  • Thirty

  • Fifty seven

  • Fifty seven

1197 Views

7.

An organic substance bound to an enzyme and essential for its activity is called

  • coenzyme

  • holoenzyme

  • apoenzyme

  • apoenzyme

852 Views

8.

Bowman's glands are found in

  • olfactory epithelium

  • external auditory canal

  • cortical nephrons only

  • cortical nephrons only

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9.

Sulphur is an important nutrient for optimum growth and productivity in

  • pulse crops

  • cereals

  • fibre crops

  • fibre crops

1110 Views

10.

Pentamerous, actinomorphic flowers, bicarpillary ovary with oblique septa, and fruit a capsule or berry, are characteristic features of

  • Asteraceae

  • Brassicaceae

  • Solanaceae

  • Solanaceae

1105 Views

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