Biomedical engineering 3

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📌تنويه بسيط : ربما بعض الاجوبه غير دقيقه او غلط ف تقدروا تعدلوها في التعليقات ونشوف الاصح.

21. What is the function of the rough endoplasmic reticulum? a) Synthesis of secretory and other proteins b) Addition of carbohydrates to proteins c) Production of new cell membrane d) Storage of calcium ions 22. What is the function of the smooth endoplasmic reticulum? a) Synthesis of lipids b) Metabolism of carbohydrates c) Detoxification of drugs and poisons d) Storage of calcium ions 23. What is the purpose of the Golgi apparatus in the cell? a) Synthesis of proteins b) Breakdown of cellular waste c) Modification and packaging of proteins d) Storage of calcium ions 24. What is the role of mitochondria in cellular respiration? a) Production of ATP b) Synthesis of glucose c) Breakdown of lipids d) Storage of genetic information 25. What is the function of the central vacuole in plant cells? a) Storage of nutrients b) Production of ATP c) Synthesis of proteins d) Breakdown of waste 26. What is the purpose of the pH scale? a) Measure of the acidity or basicity of a solution b) Measure of the concentration of water molecules c) Measure of the concentration of ions in a solution d) Measure of the concentration of proteins in a solution 27. What is the role of cohesion in water molecules? a) Holding of molecules of a substance together by hydrogen bonds b) Clinging of one substance to another c) Transport of dissolved nutrients against gravity in plants d) Clinging of water molecules to the walls of xylem vessels 28. What is the function of adhesion in water molecules? a) Holding of molecules of a substance together by hydrogen bonds b) Clinging of one substance to another c) Transport of dissolved nutrients against gravity in plants d) Clinging of water molecules to the walls of xylem vessels 29. What is the function of covalent bonds in chemical bonding? a) Sharing of valence electrons between atoms b) Transfer of valence electrons from one atom to another c) Attraction between oppositely charged ions d) Formation of hydrogen bonds between molecules 30. What is the purpose of facilitated diffusion in cell membranes? a) Passive transport of ions and polar molecules with the help of transport proteins b) Active transport of ions and polar molecules against their concentration gradients c) Breakdown of large molecules into smaller units for transport d) Synthesis of ATP for energy-dependent transport processes

3⃣ 1. What is the process by which water molecules move across a selectively permeable membrane in response to differences in solute concentration? a) Osmosis b) Diffusion c) Active transport d) Facilitated diffusion 2. What is the function of the cell wall in plant cells? a) Protection and support b) Regulation of nutrient intake c) Communication with other cells d) Storage of genetic information 3. What is the purpose of the central vacuole in plant cells? a) Storage of nutrients b) Production of ATP c) Synthesis of proteins d) Breakdown of waste 4. What is the role of the smooth endoplasmic reticulum? a) Synthesis of secretory and other proteins b) Addition of carbohydrates to proteins c) Production of new cell membrane d) Detoxification of drugs and toxins 5. What is the function of peroxisomes in the cell? a) Breakdown of toxic substances b) Synthesis of ATP c) Storage of genetic information d) Production of enzymes 6. What is the purpose of the Krebs cycle in cellular respiration? a) Production of ATP b) Breakdown of glucose c) Oxidation of pyruvate d) Synthesis of lipids 7. What is the role of the electron transport chain in cellular respiration? a) Production of ATP b) Synthesis of glucose c) Breakdown of lipids d) Storage of genetic information 8. What is the function of the nucleolus in the cell? a) Synthesis of ribosomal RNA (rRNA) b) Synthesis of messenger RNA (mRNA) c) Synthesis of transfer RNA (tRNA) d) Synthesis of DNA 9. What is the purpose of meiosis in organisms? a) Growth and development b) Repair of damaged tissues c) Production of gametes for sexual reproduction d) Production of identical daughter cells 10. How many chromosomes do humans have? a) 23 b) 46 c) 92 d) 100 11. What occurs during crossing over in meiosis? a) Exchange of genetic material between non-sister chromatids b) Separation of homologous chromosomes c) Replication of DNA d) Formation of gametes 12. What is the end result of meiosis? a) Four daughter cells with the same number of chromosomes as the parent cell b) Two daughter cells with half the number of chromosomes as the parent cell c) Two daughter cells with the same number of chromosomes as the parent cell d) Four daughter cells with double the number of chromosomes as the parent cell 13. What is the purpose of telophase I in meiosis? a) Formation of two nuclei around each set of chromosomes b) Separation of homologous chromosomes c) Exchange of genetic material between non-sister chromatids d) Formation of gametes 14. What is the purpose of metaphase II in meiosis? a) Alignment of chromosomes in the center of the cell b) Separation of homologous chromosomes c) Exchange of genetic material between non-sister chromatids d) Formation of gametes 15. What is the function of mRNA in protein synthesis? a) Carries the genetic code from DNA to the ribosome b) Adds carbohydrates to proteins c) Synthesizes new cell membrane d) Detoxifies drugs and toxins 16. What is the role of tRNA in translation? a) It carries amino acids to the ribosome b) It attaches to the promoter region on the DNA c) It synthesizes new DNA strands d) It breaks down proteins into amino acids 17. What is the purpose of the 5' cap and poly-A tail in mRNA? a) Protection of the mRNA molecule from degradation b) Attachment of ribosomes to the mRNA molecule c) Regulation of gene expression d) Removal of introns from the mRNA molecule 18. What is the function of the small subunit of the ribosome in translation? a) Recognition and binding of mRNA b) Carries amino acids to the ribosome c) Synthesizes new DNA strands d) Breaks down proteins into amino acids 19. What is the process by which mRNA is modified before leaving the nucleus? a) Transcription b) Translation c) RNA processing d) Replication 20. What is the purpose of the nucleolus in the cell? a) Synthesis of ribosomal RNA (rRNA) b) Synthesis of messenger RNA (mRNA) c) Synthesis of transfer RNA (tRNA) d) Synthesis of DNA

23. What is the function of covalent bonds in chemical bonding? a) Sharing of valence electrons between atoms b) Transfer of valence electrons from one atom to another c) Attraction between oppositely charged ions d) Formation of hydrogen bonds between molecules 24. What is the purpose of facilitated diffusion in cell membranes? a) Passive transport of ions and polar molecules with the help of transport proteins b) Active transport of ions and polar molecules against their concentration gradients c) Breakdown of large molecules into smaller units for transport d) Synthesis of ATP for energy-dependent transport processes 25. What is the function of active transport in cell membranes? a) Movement of molecules from an area of low concentration to an area of high concentration b) Movement of molecules from an area of high concentration to an area of low concentration c) Movement of molecules with their concentration gradients d) Movement of molecules against their concentration gradients with the help of energy 26. What is the purpose of the Krebs cycle in cellular respiration? a) Production of ATP b) Breakdown of glucose c) Oxidation of pyruvate d) Synthesis of lipids 27. What is the role of the electron transport chain in cellular respiration? a) Production of ATP b) Synthesis of glucose c) Breakdown of lipids d) Storage of genetic information 28. What is the function of the cell wall in plant cells? a) Protection and support b) Regulation of nutrient intake c) Communication with other cells d) Storage of genetic information 29. What is the purpose of the pH scale? a) Measure of the acidity or basicity of a solution b) Measure of the concentration of water molecules c) Measure of the concentration of ions in a solution d) Measure of the concentration of proteins in a solution 30. What is the role of cohesion in water molecules? a) Holding of molecules of a substance together by hydrogen bonds b) Clinging of one substance to another c) Transport of dissolved nutrients against gravity in plants d) Clinging of water molecules to the walls of xylem vessels 31. What is the function of adhesion in water molecules? a) Holding of molecules of a substance together by hydrogen bonds b) Clinging of one substance to another c) Transport of dissolved nutrients against gravity in plants d) Clinging of water molecules to the walls of xylem vessels 32. What is the function of covalent bonds in chemical bonding? a) Sharing of valence electrons between atoms b) Transfer of valence electrons from one atom to another c) Attraction between oppositely charged ions d) Formation of hydrogen bonds between molecules 33. What is the purpose of facilitated diffusion in cell membranes? a) Passive transport of ions and polar molecules with the help of transport proteins b) Active transport of ions and polar molecules against their concentration gradients c) Breakdown of large molecules into smaller units for transport d) Synthesis of ATP for energy-dependent transport processes 34. What is the function of active transport in cell membranes? a) Movement of molecules from an area of low concentration to an area of high concentration b) Movement of molecules from an area of high concentration to an area of low concentration c) Movement of molecules with their concentration gradients d) Movement of molecules against their concentration gradients with the help of energy 35. What is the purpose of the Krebs cycle in cellular respiration? a) Production of ATP b) Breakdown of glucose c) Oxidation of pyruvate d) Synthesis of lipids 36. What is the role of the electron transport chain in cellular respiration? a) Production of ATP b) Synthesis of glucose c) Breakdown of lipids d) Storage of genetic information

2⃣ 1. What is the function of the Golgi apparatus in the cell? a) Synthesis of proteins b) Breakdown of cellular waste c) Modification and packaging of proteins d) Storage of calcium ions 2. What is the role of the rough endoplasmic reticulum? a) Synthesis of secretory and other proteins b) Addition of carbohydrates to proteins c) Production of new cell membrane d) Storage of calcium ions 3. What is the function of messenger RNA (mRNA) in protein synthesis? a) Carries the genetic code from DNA to the ribosome b) Adds guanosine triphosphate to the mRNA c) Joins exons together in mRNA processing d) Attaches to the small subunit of the ribosome 4. What is the net diffusion of water molecules across a selectively permeable membrane called? a) Osmosis b) Facilitated diffusion c) Active transport d) Endocytosis 5. What is the process by which large molecules and particles are taken into the cell? a) Endocytosis b) Phagocytosis c) Pinocytosis d) Exocytosis 6. What is the purpose of meiosis in organisms? a) Production of gametes for sexual reproduction b) Repair of damaged tissues c) Growth and development d) Production of identical daughter cells 7. What occurs during crossing over in meiosis? a) Exchange of genetic material between non-sister chromatids b) Separation of homologous chromosomes c) Replication of DNA d) Formation of gametes 8. How many chromosomes do humans have? a) 23 b) 46 c) 92 d) 100 9. What is the function of the cell membrane? a) Regulation of nutrient intake b) Protection and support c) Communication with other cells d) All of the above 10. What is the function of vacuoles in cells? a) Storage of nutrients b) Breakdown of waste c) Production of ATP d) Synthesis of proteins 11. What is the amphipathic nature of phospholipids? a) They have a hydrophilic head and a hydrophobic tail b) They have a hydrophobic head and a hydrophilic tail 12. What is the function of the smooth endoplasmic reticulum? a) Synthesis of secretory and other proteins b) Detoxification of drugs and toxins 13. What is the role of the nucleolus in the cell? a) Synthesis of ribosomal RNA (rRNA) b) Synthesis of DNA 14. What is the function of peroxisomes in the cell? a) Breakdown of toxic substances b) Production of enzymes 15. What is the process by which DNA is replicated? a) Transcription b) Translation c) DNA processing d) Replication 16. What is the function of transfer RNA (tRNA) in translation? a) Carries amino acids to the ribosome b) Attaches to the promoter region on the DNA c) Adds nucleotides to the growing mRNA strand d) Transcribes DNA into mRNA 17. What is the purpose of the Krebs cycle in cellular respiration? a) Production of ATP b) Breakdown of glucose c) Oxidation of pyruvate d) Synthesis of lipids 18. What is the role of the electron transport chain in cellular respiration? a) Production of ATP b) Synthesis of glucose c) Breakdown of lipids d) Storage of genetic information 19. What is the function of the cell wall in plant cells? a) Protection and support b) Regulation of nutrient intake c) Communication with other cells d) Storage of genetic information 20. What is the purpose of the pH scale? a) Measure of the acidity or basicity of a solution b) Measure of the concentration of water molecules c) Measure of the concentration of ions in a solution d) Measure of the concentration of proteins in a solution 21. What is the role of cohesion in water molecules? a) Holding of molecules of a substance together by hydrogen bonds b) Clinging of one substance to another c) Transport of dissolved nutrients against gravity in plants d) Clinging of water molecules to the walls of xylem vessels 22. What is the function of adhesion in water molecules? a) Holding of molecules of a substance together by hydrogen bonds b) Clinging of one substance to another c) Transport of dissolved nutrients against gravity in plants d) Clinging of water molecules to the walls of xylem vessels

25. What is the purpose of the cell membrane? a) Regulation of nutrient intake b) Protection and support c) Communication with other cells d) All of the above 26. What is the function of vacuoles in cells? a) Storage of nutrients b) Production of ATP c) Synthesis of proteins d) Breakdown of waste 27. What is the amphipathic nature of a phospholipid? a) It has both hydrophilic and hydrophobic regions b) It is positively charged c) It is negatively charged d) It is water-soluble 28. How do transport proteins help ions and polar molecules move across cell membranes? a) By creating a hydrophilic channel b) By breaking down the molecules into smaller units c) By converting them into lipids d) By attaching them to carrier #biology

1. What is the smallest unit of matter that retains the properties of an element? a) Molecule b) Atom c) Cell d) Compound 2. Which subatomic particle has a negative charge? a) Proton b) Neutron c) Electron d) Nucleus 3. What is the ratio of sodium (Na) to chlorine (Cl) in sodium chloride (NaCl)? a) 1:1 b) 2:1 c) 1:2 d) 2:2 4. What percentage of elements are essential for living organisms? a) 10% b) 25% c) 50% d) 75% 5. What is the holding of molecules of a substance together by hydrogen bonds called? a) Adhesion b) Cohesion c) Solvent d) Solute 6. What is the measure of the acidity or basicity of a solution? a) pH scale b) Solubility c) Concentration d) Osmosis 7. What is the basic unit of biology? a) Atom b) Molecule c) Cell d) Organism 8. What are organisms called that are made up of a single cell? a) Multicellular b) Autotrophs c) Heterotrophs d) Unicellular 9. What are the four major macromolecules found in living organisms? a) Carbohydrates, lipids, proteins, nucleic acids b) Sugars, fats, amino acids, DNA c) Glucose, cholesterol, enzymes, RNA d) Starch, phospholipids, hormones, ATP 10. What is the function of vacuoles in cells? a) Storage of nutrients b) Production of ATP c) Synthesis of proteins d) Breakdown of waste 11. What is the amphipathic nature of a phospholipid? a) It has both hydrophilic and hydrophobic regions b) It is positively charged c) It is negatively charged d) It is water-soluble 12. How do transport proteins help ions and polar molecules move across cell membranes? a) By creating a hydrophilic channel b) By breaking down the molecules into smaller units c) By converting them into lipids d) By attaching them to carrier proteins 13. What is the net diffusion of water molecules across a selectively permeable membrane called? a) Osmosis b) Diffusion c) Active transport d) Facilitated diffusion 14. How does endocytosis differ from exocytosis? a) Endocytosis takes in molecules, while exocytosis releases molecules b) Endocytosis releases molecules, while exocytosis takes in molecules c) Endocytosis occurs in prokaryotic cells, while exocytosis occurs in eukaryotic cells d) Endocytosis occurs in animal cells, while exocytosis occurs in plant cells 15. What is the purpose of meiosis in organisms? a) Growth and development b) Repair of damaged tissues c) Production of gametes for sexual reproduction d) Production of identical daughter cells 16. How many chromosomes do humans have? a) 23 b) 46 c) 92 d) 100 17. What occurs during crossing over in meiosis? a) Exchange of genetic material between non-sister chromatids b) Separation of homologous chromosomes c) Replication of DNA d) Formation of gametes 18. What is the end result of meiosis? a) Four daughter cells with the same number of chromosomes as the parent cell b) Two daughter cells with half the number of chromosomes as the parent cell c) Two daughter cells with the same number of chromosomes as the parent cell d) Four daughter cells with double the number of chromosomes as the parent cell 19. What is the process by which DNA is replicated? a) Transcription b) Translation c) Replication d) Reverse transcription 20. What is the first step in protein synthesis? a) Transcription b) RNA processing c) Translation d) Replication 21. What is the function of messenger RNA (mRNA) in protein synthesis? a) Carries the genetic code from DNA to the ribosome b) Adds nucleotides to the growing RNA strand c) Joins exons together in mRNA processing d) Attaches to the small subunit of the ribosome 22. What is the purpose of the Krebs cycle in cellular respiration? a) Production of ATP b) Breakdown of glucose c) Oxidation of pyruvate d) Synthesis of lipids 23. What is the function of the Golgi apparatus in the cell? a) Synthesis of proteins b) Breakdown of cellular waste c) Modification and packaging of proteins d) Storage of calcium ions 24. What is the role of mitochondria in cellular respiration? a) Production of ATP b) Synthesis of glucose c) Breakdown of lipids d) Storage of genetic information

بسم الله الان نبدأ بنشر الاسئلة المتعلقة بمادة الاحياء 🫀🩸💉 👇👇👇👇 #biology

يعني بيكون معانا اسبوعين اجازه بعد الاختبارات ✌️🏻🔥

التقويم الدراسي / الخطة الدراسية للترم الثاني  لكلية الهندسة جامعة صنعاء #اللجنة_الإعلامية_كلية_الهندسة #ملتقى_الطالب_الجامعي. #جامعة_صنعاء

السلام عليكم ورحمة الله ممكن لو حد كان يتابع مع الدكتوره ابتسام ويكتب ملاحظات مهمه من الشرح يتكرم يصورهن ويحولهن pdf ويرسلهن هنا في التعليق او لأحد اعضاء اللجنه. والله يكتب اجره .

🛑🛑هااااام🛑🛑 تم تأجيل أختبار يوم غداً الدوائر المنطقية لبعد آخر اختبار يعني بعد اختبار مادة دوائر كهربائية بنختبر دوائر منطقية وسيتم توافيكم ب آخر المستجدات

أسعد الله مسائكم بكل خير سيتم إن شاء الله إرسال أسئلة في مادة اللوجيك على هذه القناة وهذه المرة الاسئلة من المرجع ومن موقع يتبع المرجع يعني إن شاء الله تكون الأخطاء أقل