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Animal Biotechnology Chromosomes
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Home⇒ Medical Science⇒ Biotechnology⇒ Plant structure
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that mitochondria are surrounded by a semi permeable membrane [other wrong options] [Discuss in forum] the mitochondrial matrix is hypotonic to the cellular cytoplasm the mitochondrial matrix is hypertonic to the cellular cytoplasm mitochondria were derived from a symbiotic bacterium |
Q2 ⇒ "The universe tends towards maximum disorder" is stated by second law of thermodynamics [other wrong options] [Discuss in forum] first law of thermodynamics third law of thermodynamics none of the above |
Q3 ⇒ Which of the following statements about mitochondrial proteins is true? Some mitochondrial proteins are coded for and synthesized in the mitochondria and others [other wrong options] [Discuss in forum] All mitochondrial proteins are coded for and synthesized in the mitochondria All mitochondrial proteins are imported from the cytoplasm Mitochondrial proteins arise from other mitochondrial proteins |
Q4 ⇒ Which of the following observations is not used as evidence to support the concept of endosymbiotic origin of chloroplasts and mitochondria? Both can live and function independently of the cell [other wrong options] [Discuss in forum] Both have their own DNA Both have their own ribosomes Both strongly resemble prokaryotes, especially in size |
Q5 ⇒ The element neon (Ne) has eight electrons in its outermost electron shell. How many covalent bonds will Ne readily form? None [other wrong options] [Discuss in forum] One Two Four |
Q6 ⇒ Which cell type is likely to have the most mitochondria? Slow-twitch muscle [other wrong options] [Discuss in forum] Fast-twitch muscle Liver cells Adipose cells |
Q7 ⇒ The cellular organelle associated with photosynthesis is the chloroplast [other wrong options] [Discuss in forum] golgi complex mitochondrion lysosome |
Q8 ⇒ The composition of the inner mitochondrial membrane is most like that of some bacterial plasma membranes [other wrong options] [Discuss in forum] the outer mitochondrial membrane the cell's plasma membrane the nuclear membrane |
Q9 ⇒ Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential? Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions [other wrong options] [Discuss in forum] The rules governing oxidation and reduction apply only in vitro, and not in vivo Electrons always go from reductants with high redox potentials to oxidants with low redox potentials None of the above |
Q10 ⇒ Which of the following is not an electron carrier class in the electron transport chain? Cytochrome c oxidase [other wrong options] [Discuss in forum] Flavoproteins Cytochromes Iron - sulfur proteins |
Q11 ⇒ Which molecule serves as a carrier of fatty acids in mitochondria? Carnitine [other wrong options] [Discuss in forum] Acetyl-CoA Dolichol Malonyl-CoA |
Q12 ⇒ Which of the following elements is likely to form the least polar covalent bond with hydrogen? Carbon [other wrong options] [Discuss in forum] Nitrogen Oxygen Phosphorus |
Q13 ⇒ Which part of a plant contains the male sex cell? Pollen [other wrong options] [Discuss in forum] Ova Style Stamen |
Q14 ⇒ The cellular organelle associated with secretion is the golgi complex [other wrong options] [Discuss in forum] mitochondrion ribosome lysosome |
Q15 ⇒ Specialized type of peroxisome and the site of glyoxylate pathway in certain plants is known as glyoxysome [other wrong options] [Discuss in forum] gly-peroxisome lysosome none of these |
Q16 ⇒ Which is not true about a photon? It donates electron to reduce carbon dioxide to glucose [other wrong options] [Discuss in forum] It is a packet of light energy The shorter the wavelength, the greater the energy of the photons It is trapped by photosynthetic unit |
Q17 ⇒ A cell without cell wall is called protoplast [other wrong options] [Discuss in forum] apoplast symplast none of these |
Q18 ⇒ Which of the following experimental results does not support Mitchell's chemiosmosis theory? Addition of dinitrophenol to isolated mitochondria was shown to inhibit electron transport, but had no effect on ATP synthesis [other wrong options] [Discuss in forum] Electron transport in isolated mitochondria was shown to result in acidification of the medium Addition of dinitrophenol to isolated mitochondria during electron transport was shown to inhibit acidification of the medium An artificial proton gradient across the inner mitochondrial membrane drives ATP synthesis in the absence of electron transport |
Q19 ⇒ The cell membrane is made up of lipoproteins [other wrong options] [Discuss in forum] cellulose phospholipids phosphoproteins |
Q20 ⇒ In plant cells, which of the following is not a function of the large central vacuoles of plant cells? Contractile regulation of [other wrong options] [Discuss in forum] Storage of food Support Waste storage water content |
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