Question 1 :
Starch and cellulose are the compounds made up of many units of
Question 3 :
Amino acids have both an amino group and a carboxyl group in their structure. Which amongst the following is an amino acid?
Question 4 :
Which one is correct about crossing over / genetic recombination? <br>I. It occurs in tetrad stage. It occurs in pachytene of prophase I of meiosis I <br>II. It occurs between non-sister chromatids of homologous chromosomes <br>III. It is the exchange of genetic material between the homologous chromosomes <br>IV. It is recombinase enzyme mediated process <br>V. Recombination nodule of synaptonemal complex between the homologous chromosomes is the site of crossing over. <br>VI. It causes genetic variation which is important for evolution. <br>VII. It is also the reciprocal transfer of genes between the non homologous chromosomes
Question 8 :
The class of enzymes that catalyze the removal of a group from a substrate without addition of water, leaving double bonds, is
Question 10 :
Which of the following is unique to mitosis and not a part of meiosis
Question 14 :
The Km value of the enzyme is the value of the substrate concentration at which the reaction reaches to
Question 15 :
Major classes of biologically significant large molecules include which of the following?
Question 19 :
Adenosine, Guanosine, thymidine, uridine, cytidine are all _____ but adenylic acid, guanylic acid, uridylic acid, cytidylic acid are _____
Question 22 :
Which of the following statement about enzymes is true? <br>I. Enzymes do not alter the overall change in free energy for a reaction <br>II. Enzymes are proteins whose three dimensional shape is key to their functions <br>III. Enzymes speed up reactions by lowering activation energy <br>IV. Enzyme are highly specific for reactions <br>V. The shape of an enzyme does not effect its activity <br>VI. The energy input needed to start a chemical reactions is called activation energy
Question 24 : <p>See the diagrams carefully and identify the different stages of mitosis <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ece4ae3eab619455fcb77d3"/>by choosing appropriate options given below</p><p><img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ece4ae35a988945243d3b5b"/></p>
Question 26 :
How many equational divisions are necessary in a cell of onion root tip to form 128 cells?
Question 27 :
The energy required for life processes must be extracted from on organism's
Question 28 : <p>Which of the following occurs more than one and less than five in a chromosome?</p>
Question 30 :
Fully differentiated cells which do not divide are supposed to be in :
Question 31 : Match the Column I with Column II -<table><tr><td></td><td></td></tr><tr><td>1</td><td>Terminalization of chiasmata </td><td>A.Zygotene </td></tr><tr><td>2</td><td>Synapsis </td><td>B.Diplotene </td></tr><tr><td>3</td><td>Crossing over </td><td>C.Metaphase I </td></tr><tr><td>4</td><td>Dissolution of synaptonemal complex </td><td>D.Diakinesis </td></tr><tr><td>5</td><td>Best stage for the study nucleolus disappear </td><td>E.Pachytene </td></tr><tr><td>6</td><td>Nuclear membrane and nucleolus disappear </td><td></td></tr><tr><td>7</td><td>Tetrads are arranged on equatorial line </td></tr></table>
Question 33 :
The microtubules of the mitotic spindle attach to a specializes structure in the centromere region of each chromosome called the __________.
Question 38 :
When triglycerides are solid at ordinary room temperature, they are called
Question 39 : <p>One of the major feature of metabolic reaction is that they are…</p>
Question 40 : <p>Choose the correct statements regarding cell cycle</p><p>I. Interphase is called the resting phase</p><p>II. Interphase is the time during which the cell is preparing for division</p><p>III. The interphase is divided into phases, <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ece4abfeab619455fcb77a8"/>S and <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ece4abdeab619455fcb77a4"/>-phase</p><p>IV. Interphase represents the phase between the two successive M-phases</p><p>The option with correct statements is</p>
Question 42 :
The complex formed by a pair of synapsed homologous chromosomes is called
Question 43 :
In most plant cells most enzymes have their optimum activity at
Question 44 : <p>Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these</p>
Question 45 :
Primary protein structure determines which of the following additional levels of protein organization?
Question 46 :
The cell as a basic unit of structure of living beings was discovered by
Question 48 :
At metaphase of mitosis, each chromosome consists of ____ chromatid (s)_____ centromere (s)______ kinetochore (s) and____ molecules of DNA -
Question 51 :
According to weight percentage, the first three elements in human body are
Question 57 :
<b>Assertion</b>: Interphase occupies 75-95% of the total generation time. <br><b>Reason</b>: Interphase (I-phase) is the long non-dividing phase.
Question 59 :
In the modern system of nomenclature which one of the following enzyme occupies 1st position
Question 60 :
Which one of the following biomolecules will be different in different animals
Question 61 :
Which of the following statement(s) is/are correct about S-phase (synthetic phase) ? <br />(i) It occurs between {tex}G_1{/tex} and {tex}G_2{/tex} phase. <br />(ii) It marks the period during which DNA replicates. <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.
Question 64 :
The two sub-units of ribosome remain united at a critical ion level of
Question 65 :
Which of the following cell organelles were discovered after the introduction of electron microscope?
Question 66 :
Which of the following pair are correctly matched ? <br>(I) Amyloplasts – Store proteins <br>(II) Mitochondrion – ‘Power house’ of the cell <br>(III) Stroma – Chlorophyll pigment <br>(IV) Axoneme – 9 + 2 array
Question 67 : Match the biomoecules given in column I with their examples given in column II and choose the correct answer. <table><tr><td>Column I(Biomolecules)</td><td>Column II (Examples)</td></tr> <tr><td>A. Carbohydrates</td><td>I. Trypsin</td></tr> <tr><td>B. Protein</td><td>II. Cholesterol</td></tr> <tr><td>C. Nucleic acid</td><td>III. Insulin</td></tr> <tr><td>D. Lipid</td><td>IV. Adenylic acid</td></tr></table>
Question 69 :
{tex} \mathrm {Assertion}{/tex} : In animal cells, the cytokinesis is marked by the appearance of a furrow in plasma membrane. <br>{tex} \mathrm {Reason}{/tex} : In plant cells, the formation of the new cell wall starts with the formation of simple precursor called cell plate.
Question 70 : <p>When parental and maternal chromosomes change their material with each other in cell division, this event is called</p>
Question 71 :
At which stage, the homologous chromosomes separate due to repulsion, but are yet held by chiasmata ?
Question 72 : The curve given below shows enzymatic activity in relation to three conditions (pH, temperature and substrate concentration). What do the two axes (x and y ) represent? <br /><img style='object-fit:contain' class="uploaded-image" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5f253fd89690e43dfc4942ac" /> <br />X- axis {tex}\quad{/tex} y-axis
Question 73 : Identify A and B bonds in the following diagrammatic representation of a portion of glycogen -<br><img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/NEET/5e6f4214b4ff0c0bb8d14963' height='154' width='247' >
Question 74 :
How many reduction divisions are necessary for the formation of 200 grains of wheat
Question 75 :
At the time of cotton seeds germination, the stored food is digested by
Question 76 :
Find the correctly matched pairs and choose the correct option. <br>A. Zygotene – Pairing of homologous chromosomes <br>B. Pachytene – Dissolution of the complex synaptonemal takes place <br>C. Diplotene – Bivalent chromosomes appear as tetrads <br>D. Diakinesis – Terminalization of chiasmata takes place
Question 78 :
Which of the following is not a part of enzyme but it activates the enzyme
Question 82 : Match the Column I with Column II correctly -<table><tr><td>Column I (Category)</td><td>Column II (Secondary Metabolites)</td></tr><tr><td>A.Pigments </td><td>I.Concanavalin A</td></tr><tr><td>B.Terpenoides </td><td>II.Monoterpenes, Diterpenes </td></tr><tr><td>C.Alkaloids </td><td>III.Morphine, Cadeine </td></tr><tr><td>D.Lectins </td><td>IV.Carotenoids, Anthocyanine </td></tr></table>
Question 84 :
During cell division in apical meristem, the nuclear membrane appears in
Question 85 :
<b>Assertion</b> :In a DNA molecule, A–T rich parts melt before G–C rich parts. <br><b>Reason</b>: In between A and T there are three H–bond, whereas in between G and C there are two Hbonds.
Question 86 :
Which of the given option is correct for the following statements ? <br>(i) The metabolic pathway in which acetic acid is converted into cholesterol is an endothermic one. <br>(ii) Anabolic pathway is endergonic while catabolic pathway is exergonic. <br>(iii) Without metabolism there can not be a living state.
Question 87 :
Which one of the following precedes re-formation of the nuclear envelope during M-phase of the cell cycle?
Question 88 :
Assertion: Plasmids are double - stranded extra - chromosomal DNA.<br />Reason : Plasmids are possessed by eukaryotic cells.
Question 89 :
Mature nerve cells are incapable of cell division. These cells are probably in
Question 91 :
Find out the wrongly matched pair of the stage of prophase I with their feature.
Question 92 : Which one out of A -D given below correctly represents the structural formula of the basic amino acid?<br /><img style='object-fit:contain' class="uploaded-image" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5f253e133afedc7f187a8d6e" />
Question 93 : In an experiment, freshly hatched larvae of an insect (khapra beetle) were reared on a basal diet (complete diet without cholesterol) with increasing amounts of cholesterol. Results obtained are shown in the graph given in the table <br />The graph indicates<br /><img style='object-fit:contain' class="uploaded-image" src="https://storage.googleapis.com/teachmint/question_assets/NEET/5f2543d43afedc7f187a96e2" />
Question 94 :
Which stain is commonly used in study of cell division :-
Question 95 : Which stages of cell division do the following figures A and B represent respectively?<br><img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5f2477bf9327967e89c209b4" />
Question 96 :
<b>Assertion</b>: Metaphase II begins with splitting of centromere of each chromosome into two. <br><b>Reason</b>: In Anaphase II chromosomes align at the equator.
Question 98 :
Ball and stick models emphasize the _____ of a molecule but fail to suggest its _____
Question 100 :
In which stage of the cell cycle, histone proteins are synthesized in a eukaryotic cell?
