BIOLOGY
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
مندرجہ ذیل میں سے کون سا مماثل ہے؟
Proteases → Carbohydrate
Lipases → Lipids
Trypsin → Protein
All are correctly matched
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Explanation
The mismatched pair is : Proteases → Carbohydrate Proteases are enzymes that break down proteins, not carbohydrates.
فعال سائٹ مسلسل اپنی شکل بدلتی رہتی ہے جب تک کہ سبسٹریٹ اس سے منسلک نہ ہو جائے، یہ ______ کا بیان ہے؟
Induce fit model
Lock and key model
Fluid mosaic model
Both A and B
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Explanation
The induced fit model proposes that the active site of an enzyme is flexible and changes shape until the substrate binds, much like a glove molding to fit a hand.This model suggests that the enzyme adapts to the substrate, rather than the substrate simply fitting into a pre-existing lock.
وہ نقطہ جہاں انزائم سب سے زیادہ فعال ہے ______ کے نام سے جانا جاتا ہے؟
Neutral pH
Acidic pH
Basic pH
Optimum pH
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Explanation
Optimum pH is the point where an enzyme is most active. It is the pH at which the enzyme catalyzes the reaction at its maximum rate. Different enzymes have different optimum pH values , depending on their structure and function.
میٹابولک رد عمل ______ ہیں؟
Constructive reactions
Destructive reactions
Inhibiting reactions
Both A and B
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Explanation
Metabolic reactions are both constructive (anabolic) and destructive (catabolic) reactions.
تمام خامروں کے حروف ہیں سوائے؟
Enzyme speed up a biochemical reaction
Enzymes are sensitive to minor change in pH
Enzyme activity enhanced by inhibitors
Enzyme portion where substrate attach called active site
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Explanation
Inhibitors are molecules that bind to enzymes and decrease their activity, thereby slowing down or preventing the biochemical reaction. Enzyme activity is not enhanced by inhibitors , but rather inhibited.
وہ رجحان جس میں ہومولوس کروموسوم کا جوڑا الگ ہونے میں ناکام ہو جاتا ہے جسے _____ کہا جاتا ہے؟
Non-disjunction
Terminalization
Synapsis
Linkage
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Explanation
Non-disjunction is the phenomenon where a pair of homologous chromosomes (or a pair of sister chromatids) fails to separate properly during meiosis. Resulting in an abnormal number of chromosomes in the daughter cells.This can lead to genetic abnormalities , such as Down syndrome (trisomy 21), or other chromosomal disorders.
مییووسس کا مرحلہ جس میں سنٹرومیرز چھوٹے ہو جاتے ہیں اور جوڑے ہوئے کرومیٹڈس ایک دوسرے سے دور ہو جاتے ہیں؟
Anaphase-II
Metaphase-II
Telophase-II
Prophase-II
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Explanation
In Anaphase-II of meiosis, the centromeres shorten and the paired chromatids (sister chromatids) are pulled away from one another, moving to opposite poles of the cell.This is the stage where the genetic material is finally separated, and each pole receives a complete set of chromosomes.
مائٹوسس کا مرحلہ جس میں کرومیٹڈز قطبوں تک پہنچ جاتے ہیں اور ان کی حرکت بند ہو جاتی ہے؟
Prophase
Metaphase
Anaphase
Telophase
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Explanation
In Telophase, the chromatids (now called chromosomes) have reached the poles of the cell and their movement ceases. The nuclear envelope begins to reform around each set of chromosomes, and the cytoskeleton reorganizes to prepare the cell for cytokinesis (cell division).
سیل ڈویژن کی ایک قسم جس میں بیضہ مادر سیل بیضہ پیدا کرتا ہے؟
Amitosis
Mitosis
Meiosis
Both A and B
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Explanation
Meiosis is a type of cell division that occurs in spore-producing organisms, such as plants and fungi, to produce spores. In meiosis, a diploid spore mother cell (sporocyte) undergoes two successive cell divisions (meiosis I and meiosis II) to produce four haploid spores.
مییووسس کے بارے میں غلط بیان کا انتخاب کریں؟
Maintain chromosome number from generation to generation
Reduces the diploid number of chromosomes to half
Takes place in germ cell to produce gametes
Production of new somatic cells from germ cells
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Explanation
Meiosis is a type of cell division that occurs in germ cells (reproductive cells) to produce gametes (sperm or egg cells). It does not produce new somatic cells (non-reproductive cells).