Question 2 :
When apoenzyme is separated from its metal component its activity is -

Question 7 :
The following diagram refers to a typical cell cycle.<br><img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/NEET/5e6f48eea5aec94630e03454' height='147' width='183' ><br>Identify the parts marked as X, Y and Z.

Question 8 :
During the metaphase stage of mitosis, spindle fibres attach to chromosomes at

Question 9 :
A picture of dividing Drosophila cell through a microscope shows that the cell contains 8 chromosomes, each consisting of two chromatids. The picture must have been taken during -

Question 10 :
Electron microscope has revealed the presence of or Which among the following can be seen only under electron microscope

Question 11 :
Which of the following statements regarding cilia is not correct ? (2006)

Question 19 :
<p>Read the statements given below with regard to the functions performed by Golgi apparatus?</p><p>I. Transport and chemically modify the materials contained within it</p><p>II. Secrete mucin in the respiratory tract.</p><p>III. Secrete slime in the insectivorous plants.</p><p>Which of the following is the correct answer?</p>

Question 23 :
The structure of glucose and galactose are same except with regard to

Question 24 :
Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these

Question 25 :
Huge amount of starch is deposited in potato tubers due to

Question 26 :
Match the protein given in column I with its function given in column II and choose the right option. <table><tr><td>Column I(Proteins)</td><td>Column II (Functions)</td></tr> <tr><td>A. Collagen</td><td>I. Glucose transport</td></tr> <tr><td>B. Trypsin</td><td>II. Hormone</td></tr> <tr><td>C. Insulin</td><td>III. Intercellular ground substance</td></tr> <tr><td>D. GLUT-4</td><td>IV. Enzyme</td></tr></table>

Question 28 :
A cell can not divide if it does not cross :

Question 30 :
During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

Question 31 :
Which one is correct about bivalent ? <br>(i) Bivalent are tetrads. <br>(ii) A bivalent means 4 chromatids and 2 centromere. <br>(iii) One bivalent consists of 2 homologous chromosomes each and sister chromatids. <br>(iv) Bivalents formation occurs in zygotene.

Question 34 :
When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

Question 41 :
{tex} \mathrm {Assertion}{/tex} : Crossing over leads to recombination of genetic material on the two chromosomes. <br>{tex} \mathrm {Reason}{/tex} : It is the exchange of genetic material between two homologous chromosomes.

Question 43 :
<p> <font face="Cambria Math, serif">In the process of mitotic division during interphase, chromosome material remains in the form of very loosely coiled threads called</font></p>

Question 46 :
<p> <font face="Cambria Math, serif">Within the nucleus DNA is organised along with proteins into material called</font></p>

Question 50 :
<p>I. …A… phase corresponds to the interval between mitosis and initiation of DNA replication</p><p>II. In animal cells, during the …B… phase, DNA replication begins in the nucleus and the centriole duplicates in the cytoplasm</p><p>III. During the …C… phase, proteins are synthesized for the preparation of mitosis, while cell growth continues</p><p>Identify the blanks (A-C) to complete the given statements (I-III) with reference to NCERT textbook</p>

Question 51 :
Which of the following statements is incorrect? <br>I. Nearly 1/3^rd of all enzymes requires the presence of metal ions for catalytic function <br>II. Metal ions form coordinate bond with side chain at active site of metalloenzyme and at the same time form one or more coordinate bonds with the substrate <br>III. NAD and NAD (coenzymes) contain niacin (vit.) <br>IV. Coenzyme are organic compounds but their association with the apoenzyme is only transient, usually occurring during catalysis

Question 53 :
<p> <font face="Cambria Math, serif">Name the structural formulae of the given structures correctly</font></p> <p><img style='object-fit:contain' align="bottom" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ff6e3c7fab6285fe9b59d04"/> </p>

Question 58 :
<p>The tertiary structure of the proteins containing amino acid cysteine is achieved through</p>