Question 2 :
Assertion : Leucoplasts give rise to other types of plastids.<br>Reason : Chromoplasts do not get changed to other types of plastids.
Question 3 :
The process of mitosis is divided into 4 phases. Identify the correct order in which these phases appear in mitosis
Question 5 :
Many elements are found in living organisms either free or in the form of compounds. One of the following is not found in living organisms.
Question 6 : Match column-I with column-II and select the correct option.
<table>
<tbody>
<tr>
<td>Column - I</td>
<td>Column - II</td>
</tr>
<tr>
<td>A. RER</td>
<td>I. Intracellular and extracellular digestion</td>
</tr>
<tr>
<td>B. Cell wall</td>
<td>II. Provide structural support to the cell</td>
</tr>
<tr>
<td>C. Flagella</td>
<td>III. Protein synthesis and secretion</td>
</tr>
<tr>
<td>D. Lysosomes </td>
<td>IV. Responsible for cell movement</td>
</tr>
</tbody>
</table>
Question 7 :
The homologous chromosomes follow the process of synapsis in the stage or pairing of homologous chromosome takes place in<br>Or<br>During which stage of meiosis, synaptonemal complex is formed
Question 10 :
Chromosome number is reduced during meiosis because the process consists of -
Question 11 :
Go through the following events - <br>I. Termanization of chiasmata occurs <br>II. Chromosomes are fully condensed <br>III. Meiotic spindle is assembled <br>IV. By the end NM and nucleolus disappear <br>The above points indicate that it is
Question 14 :
Enzymes having slightly different molecular structure but performing identical activity are
Question 15 :
Assertion : Enzyme substrate complex remains throughout the reaction.<br>Reason : The greater the affinity of the enzyme for a substrate, the higher is the catalytic activity.
Question 16 :
The initial source of energy to all the varied forms of life is
Question 17 :
{tex} \mathrm {Assertion}{/tex} : The stage between two mitotic divisions is called interkinesis. <br>{tex} \mathrm {Reason}{/tex} : Interkinesis is generally long lived.
Question 22 :
Given below are some characters of a cell organelle. Identify the correct organelle which shows all the characters described above. <br>(i) It is a membrane bound space found in the cytoplasm. <br>(ii) It is bound by a single membrane called tonoplast. <br>(iii) It contains water, sap, excretory products and other materials not useful to the cell. <br>(iv) It has higher concentration of sap than the cytoplasm.
Question 23 : <p>Which one of the following precedes re-formation of the nuclear envelope during M-phase of the cell cycle?</p>
Question 24 :
The complex formed by a pair of synapsed homologous chromosomes is called
Question 25 : <p>Which of the following type of cell cycle is known as equational division?</p>
Question 26 :
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 27 : <p>Pick out the correct statements.</p><p>I.Synapsis of homologous chromosomes takes place during prophase-I of meiosis.</p><p>II.Division of centromeres takes place during anaphase-I of meiosis.</p><p>III.Spindle fibres disappear completely in telophase of mitosis.</p><p>IV.Nucleoli reappear at telophase-I of meiosis.</p>
Question 29 : Select the type of enzyme involved in the following reaction.<br /><img style='object-fit:contain' src="https://s3.ap-south-1.amazonaws.com/me-p/5f4ce66e16d7e6154e451080.jpg" />
Question 30 :
Assertion : During zygotene, chromosomes show bivalent stage.<br>Reason : Bivalent is half the number of chromosomes.
Question 31 : Which one of the given graph shows the effect of pH on the velocity of a typical enzymatic reaction (V) ?<br /><img style='object-fit:contain' src="https://s3.ap-south-1.amazonaws.com/me-p/5f4ce44b16d7e6154e451077.jpg" />
Question 32 : 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' >
Question 34 :
Which of the following is not the function of cell wall? <br>(i) Provides shape to the cell. <br>(ii) Protects the cell from mechanical damage and infection. <br>(iii) Helps in cell to cell interaction. <br>(iv) Provides barrier to undesirable macromolecules.
Question 37 :
Assertion : Meiosis takes place in pollen mother cells.<br>Reason : Each pollen mother cell produce 4 haploid pollen grains.
Question 38 : <p>If the cell has 14 chromosomes at interphase. Than how many chromosomes will the cell have at <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ece4abd5a988945243d3b2f"/>-phase of cell cycle?</p>
Question 39 :
Which of the following sugars have the same number of carbon as present in glucose?
Question 40 :
Four different steps that occur during meiosis are given in the following list. <br>I. Complete separation of chromatids. <br>II. Pairing of homologous chromosomes. <br>III. Lining up of paired chromosomes on equator. <br>IV. Crossing over between chromatids. <br>These steps would occur in eh order -
Question 41 : A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics?<br /> <img style='object-fit:contain' class="uploaded-image" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5f27bc37cf2b6f3203aabfca" />
Question 42 :
Which of the following statements is correct with reference to enzymes?
Question 44 :
{tex} \mathrm {Assertion}{/tex} : The process of pairing of the chromosomes is called synapsis. <br>{tex} \mathrm {Reason}{/tex} : Synapsis occurs during leptotene stage.
Question 45 : <p>Which stages of cell division do the following figures ‘A’ and ‘B’ represent respectively?</p><p><img style='object-fit:contain' alt="Description: D:\Common Folder\scan\biology\10.cell cycle and cell division\topic no 2 q no 4.jpg" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ece4b1f5a988945243d3bab"/></p>
Question 48 : <p>Which of the following stage of mitosis follows the S and <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ece4abdeab619455fcb77a4"/>-phases of interphases?</p>
Question 55 : Given structural formula is correctly identified along with its related function by which of the following options?<br><img style='object-fit:contain' src="https://data-screenshots.sgp1.digitaloceanspaces.com/5e8eca0947c24c0489c29a82.jpg" />
Question 56 :
Which one of the following is the least likely to be involved in stabililising the threedimensional folding of most proteins?
Question 57 :
Prophase of reduction divisions is divided into number of stages. The correct chronological sequence is
Question 58 :
Which of the following phases lasts for more than 95% of the duration of cell cycle -
Question 60 :
Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these
Question 61 :
A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has
Question 63 :
Lipid come under acid insoluble fraction during analysis of chemical composition of tissues. Why?
Question 65 :
Transition state structure of the substrate formed during an enzymatic reaction is
Question 67 :
The total DNA content of each daughter cell is reduced during meiosis because -
Question 70 : The Hexokinase in the following reaction is kept under which class? <br><img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/NEET/5e6f422a815cf10b358ce1cb' height='44' width='152' >Glucose 6-Phosphate+ADP
Question 73 :
Normal cellular activities, such as protein synthesis occur primarily during<br>Or<br>Chromosome replicate in which stage of meiosis
Question 75 :
A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is
Question 78 :
Assertion : Mitosis maintains the genetic similarity of somatic cells./<br>Reason : Chromosomes do not undergo crossing over.
Question 79 :
Read the following statements about cell division and select the correct statements. <br>(i) M phase represents the phase when actual cell division occurs and I phase represents the phase between two successive M phase. <br>(ii) In the 24 hours, average duration of cell cycle of a human cell, cell division proper lasts for only about an hour. <br>(iii) M phase constitutes more than 95% of the duration of cell cycle.
Question 80 :
Number of bivalents are 8 in prophase I. What is the number of chromosomes during anaphase II ?
Question 81 :
If we ignore the effect of crossing over, how many different haploid cells arise by meiosis in diploid cell having 2n = 12
Question 82 :
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
Question 83 :
Enzyme that break nucleic acids into nucleotides belongs to which of the following class ?
Question 88 :
During which stages (or prophase I substages) of meiosis do you expect to find the bivalents and DNA replication respectively?
Question 90 :
Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.
Question 91 :
<b>Assertion</b>: The crossing over is an enzyme-mediated process. <br><b>Reason</b>: The enzyme involved in crossing over is lyase.
Question 92 :
Which one of the following is a non - reducing carbohydrate?
Question 94 :
In the composition of cellular mass, arrange the components- proteins(P), carbohydrates(C), lipids(L) and nucleic acids(N) in decreasing order of mass percentage.
Question 97 :
{tex} \mathrm {Assertion}{/tex} : Every chromosome, during metaphase has two chromatids. <br>{tex} \mathrm {Reason}{/tex} : Synthesis of DNA takes places in the S-phase of interphase.
Question 102 :
Select the option that correctly identifies the chemical bonds present in the given biomolecules. <br>Polysaccharides - A,<br> Proteins - B,<br> Fats - C,<br> Water - D
Question 104 : <p>Which of the following is a part of endomembrane system of eukaryotic cell?</p>
Question 105 :
For viewing diakinesis which one of the following would be a suitable material
Question 106 : <p> <font face="Cambria Math, serif">Which one of the following structures between two adjacent cells is an effective transport pathway?</font></p>
Question 107 : <p> <font face="Cambria Math, serif"><font>Locations or sites in the human DNA where single base DNA differences occur, are called</font></font></p>
Question 110 : <p> <font face="Cambria Math, serif"><font>Which amino acid is denoted by symbol ‘F’?</font></font></p>
Question 112 :
At metaphase, chromosomes are attached to the spindle fibres by their
Question 114 :
The smallest size of a cell which can be seen with unaided eye is -
Question 115 :
Which of the following statements are correct? <br />(i) Chitin, a complex or heteropolysaccharide occurring in exoskeleton consists of NAG. <br />(ii) Glucosamine and N-acetyl glucosamine are modified sugar. <br />(iii) Cellulose shows blue colour when treated with $I_2$ <br />(iv) Starch in plants and glycogen in animals are store houses of energy. <br />(v) Right end of polysaccharide is called reducing end while left end is called non-reducing end.
Question 117 : <p> <font face="Cambria Math, serif">If there are 120 adenine molecules in a B-DNA double helical structure showing 20 coils, what is the number of pyrimidine nucleotides forming three hydrogen bonds in it?</font></p>
Question 119 : <p> <font face="Cambria Math, serif">Which of the following is an isozyme?</font></p>
Question 121 : <p> <font face="Cambria Math, serif">Choose the correct statements</font></p> <p> <font face="Cambria Math, serif">I. Bond energy (ATP) is utilised for biosynthesis, osmotic and mechanical work that we perform</font></p> <p> <font face="Cambria Math, serif">II. When glucose is degraded into lactic acid in our muscles, energy of liberated</font></p> <p> <font face="Cambria Math, serif">III. Assembly of a proteins from amino acids requires energy</font></p> <p> <font face="Cambria Math, serif">IV. Majority of metabolic reactions can occur in isolation</font></p> <p><font face="Cambria Math, serif">V. There are many examples of uncatalysed metabolic reactions</font></p>
Question 122 :
Why the velocity of enzymatic reaction is not exceeded by any further rise in the concentration of the substrate?
Question 123 : <p> <font face="Cambria Math, serif">A biomembrane consists of lipids, proteins carbohydrates and water. These lipid molecules are</font></p>
Question 126 : <p> <font face="Cambria Math, serif">Lipids are generally</font></p> <p> <font face="Cambria Math, serif">I. water soluble</font></p> <p> <font face="Cambria Math, serif">II. water insoluble</font></p> <p> <font face="Cambria Math, serif">III. soluble in non-polar organic solvents</font></p> <p> <font face="Cambria Math, serif">IV. not soluble in non-polar organic solvents</font></p> <p><font face="Cambria Math, serif">Choose the correct options</font></p>
Question 127 : <p>…….. is the most abundant protein in whole of the biosphere</p>
Question 128 : <p> <font face="Cambria Math, serif">Which stages of mitosis is known for occurrence of cytokinesis?</font></p>
Question 130 : <p> <font face="Cambria Math, serif">The surface of the endoplasmic reticulum (ER) is covered with</font></p>
Question 131 : <p> <font face="Cambria Math, serif">Categorise the given statements as true and false</font></p> <p> <font face="Cambria Math, serif">I. Kingdom - Monera have eukaryotic organisation</font></p> <p> <font face="Cambria Math, serif">II. </font> <img style='object-fit:contain' align="absmiddle" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ff7ef46f055a67f16a224ed"/> <font face="Cambria Math, serif"> is a eukaryote</font></p> <p> <font face="Cambria Math, serif">III. Organised nucleus is present in eukaryotes</font></p> <p><font face="Cambria Math, serif">IV. </font> <img style='object-fit:contain' align="absmiddle" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ff7ef4ff055a67f16a22504"/> <font face="Cambria Math, serif"> is a prokaryote</font></p>
Question 133 : <p>Cell division can not be stopped in which phase of the cell cycle?</p>
Question 135 : <p> …<font face="Cambria Math, serif">A… are granular structures first observed under electron microscope as dense particles by …B… (1953). Here, A and B refer to</font></p>
Question 137 : <p> <font face="Cambria Math, serif">Which of the following statements (events) is/are true for mitotic telophase?</font></p>
Question 140 : <p> <font face="Cambria Math, serif">In a prokaryotic cell, the ratio of </font> <img style='object-fit:contain' align="absmiddle" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ff7efa760dc7a02e7f5c60f"/> <font face="Cambria Math, serif"> is</font></p>
Question 142 : <p>During replication of DNA, Okazaki fragments are formed in the direction of</p>
Question 144 : <p>Schleiden (1838) proposed that cell is the structural and functional unit of life. His idea was a/an</p>
Question 145 : <p> <font face="Cambria Math, serif">Lipid molecules in plasma membrane are arranged in which manner?</font></p>
Question 147 : <p> <font face="Cambria Math, serif">In eukaryotic cells, genetic material or DNA is organised into</font></p>
Question 149 : <p> <font face="Cambria Math, serif">Identify wheather the given conditions are anabolic or catabolic</font></p> <p> <font face="Cambria Math, serif">I. Glucose </font> <img style='object-fit:contain' align="absmiddle" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ff6e39c0b69914ea1b4bd24"/> <font face="Cambria Math, serif"> Lectic acid</font></p> <p> <font face="Cambria Math, serif">II. Amino acids </font> <img style='object-fit:contain' align="absmiddle" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ff6e39c0b69914ea1b4bd24"/> <font face="Cambria Math, serif"> Proteins</font></p>
