Question 1 :
The physical and the chemical properties of amino acids are essentially of the

Question 2 :
The structure that are formed by stacking of organized flattened membranous sacs in the chloroplasts are

Question 4 :
<p>Many physiological functions are performed by proteins. One such function involves that some proteins discharge</p>

Question 8 :
Assertion : Cell wall is not found in animal cell.<br>Reason : Animal cells are covered by cell membrane.

Question 10 :
When apoenzyme is separated from its metal component its activity is -

Question 11 :
Which of the following statements are correct ? <br />(i) In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome. <br />(ii) The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins. <br />(iii) RuBisCO is the most abundant protein in the whole biosphere. <br />(iv) Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system.<br />Of the above statements

Question 12 :
An elaborate network of fllamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called (Mains 2010)

Question 13 :
Assertion : DNA molecules and RNA molecules are found in the nucleus of cell.<br>Reason : On heating, enzymes do not lose their specific activity.

Question 16 :
A student placed two cells in the same solution in two different containers. The observation was given in the table. <table><tr><td>Container </td><td>Observation</td></tr> <tr><td>1 </td><td>Cell burst</td></tr> <tr><td>2 </td><td>Cell does not change its shape</td></tr></table> Which structure maintains the shape of the cell present in container 2 and provides the most significant difference between the two cells?

Question 18 :
<p>During which stage of meiosis, do tetrads line up at the equator?</p>

Question 19 :
{tex} \mathrm {Assertion}{/tex} : Diplotene is characterized by the presence of chiasmata. <br>{tex} \mathrm {Reason}{/tex} : Diplotene can last for months and years in oocytes of some vertebrates.

Question 20 :
Which phase corresponds to the interval between the mitosis and initiation of DNA replication

Question 22 :
The Km value of the enzyme is the value of the substrate concentration at which the reaction reaches to

Question 23 :
Assertion : Reduction division occurs in anaphase - I. so there is no need of meiosis.<br>Reason : Meiosis - II occurs to separate homologous chromosomes.

Question 24 :
Certain stages of cell division are represented by given figures, identify them correctly<br><img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/NEET/5e6f48ed87401646ccd8903c' height='206' width='538' >

Question 25 :
Assertion : A cell membrane shows fluid behaviour.<br>Reason : A membrane is a mosaic or composite of diverse lipids and proteins.

Question 27 :
Which one of the following structures between two adjacent cells is an effective transport pathway?

Question 28 :
The organic compound present in traces in living cells can be detected and isolated by -

Question 29 :
Arrange the following events of meiosis in correct sequence<br>(A) Crossing over<br>(B) Synapsis<br>(C) Terminalisation of chiasmata<br>(D) Disappearance of nucleolus

Question 30 :
<p>What is the approximate percentage duration of cell cycle that comes under interphase in humans?</p>

Question 34 :
Which one of the following precedes re-formation of the nuclear envelope during M-phase of the cell cycle?

Question 38 :
A &beta;-pleated sheet organization in a polypeptide chain is an example of

Question 40 :
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?

Question 42 :
Which one is correct about S-phase (synthetic phase)?<br>I. It occurs between G₁ and G₂<br>II. It marks the period during which DNA relicates <br>III. At the end of this phase DNA is doubled but the number of chromosomes remains unchanged <br>IV. As the DNA is doubled in this phase number of chromosomes is also doubled <br>V. Centrioles replicate in this phase <br>VI. Amount of DNA changes from 2C to 4C <br>VII. It is pre G₂ and post G₁ phase

Question 44 :
<p>Which of the following is not a function of vacuole in plant cell?</p>

Question 46 :
Cleavage of specific covalent bonds and removal of groups without hydrolysis is the property of

Question 47 :
The amount of DNA in a mammalian cell in early prophase I is x. What is the amount of DNA in the same cell in anaphase I of meiosis?

Question 48 :
{tex} \mathrm {Assertion}{/tex} : Some cells enter G{tex}_0{/tex} phase leading to inactivation of cell cycle.. <br>{tex} \mathrm {Reason}{/tex} : G{tex}_0{/tex} phase occurs due to non-availability of mitogen and energy rich compounds.

Question 49 :
The below structural formula belongs to -<br><img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/NEET/5e6f4211146e730c5ca5b2f4' height='54' width='54' >