Which of the following is true about the nucleolusA)found in prok.pdf

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Which of the following is true about the nucleolus? A)found in prokaryotic cells in place of a true nucleus B)contains membran attached ribosomes C)assembles ribosomal subunits D)all are true E)none are true If the nucleolus was removed, this would deplete the RNA in the nucleus. A)True B)Fals (Since most of the RNA in the nucleus is messenger RNA) If the nucleolus was removed synthesis of new ribosomes would not occur. A)True B)False (all the ribosomes a cell uses in its lifetime are present in the cytoplasm when the cell first forms) Which of the following is true about nuclear membran permeability? A)hydrophilic(aqueous) channels are larger than those of the plasma membrane B)large proteins can pass in and out of the nucleus in fully folded form in an aqueous solution(passage does not require hydrophobic leaders and membrane attachment) C)movement of large molecule through pores require assistance of transporter proteins D)the outer layer of the nuclear membrane is continuous with the endoplasmic reticulum, therefore large molecules produced in the nucleus can directly enter the ER lumen without needing to be transported through a membrane. E) all are true F)none are true Enzymes used for DNA replication are made on ribosomes located outside the nucleus. A)True B)Flase Solution Answer : Question number 1: The correct among all the statement is C (assembles ribosomal subunits) Explanation : Nucleolus is the darkly stained, circular suborganelle which lacks any limiting membrane and is formed during the interphase. it is site where ribosomes are manufactured..

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How do vesicles carrying proteins destined for secretion move to the plasma membrane? by diffusion They swim with flagella. a long microtubules They swim with cilia a long actin The diagram to the right shows a cell and many sucrose molecules. If the cell membrane is permeable to sucrose, in which direction will the sucrose move? Into the cell Out of the cell There isn\'t enough information to let Both into rod out of the cell. The success worst move If you wanted to separated cells from a plant tissue into individual cell you would need to ? adherens junctions Primary cell walls plasmodesmata hemidemosomes middle lamella The fluid material located outside of nucleus is the nucleoplasm cytosol vacuole endoplasm protoplasm Solution 1. Vesicles carrying proteins molecules destined for secretion move along with microtubules and reach to the plasma membrane. Vesicles are carried by two motor proteins, namely kinesin and dynein. Hence, the correct answer is (c) along microtubules..

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1. Of the following, which is a difference between prokaryotic and eukaryotic cells? A. Eukaryotic cells have a nuclear envelope surrounding the genetic material, whereas prokaryotes have no nucleus. B. Prokaryotic cells have multiple paired chromosomes, but eukaryotic cells have only one. C. Prokaryotic cells have linear DNA, whereas eukaryotes have circular DNA. D. Eukaryotes have histone proteins, whereas prokaryotes do not. E. Plasmids contain some genes for eukaryotes, whereas organelles contain some genes for prokaryotes. 2. Which of the following are fundamental events that must take place in cell reproduction? A. A cell\'s genetic information must be copied. B. The copies of the genetic information must be separated from one another. C. The cell must divide. D. All of the above are fundamental events that must take place in cell reproduction. 3. What are three essential structural elements of a functional eukaryotic chromosome? A. Histone proteins, spindle fibers, and a pair of telomeres B. Origins of replication, chromatids, and kinetochores C. A centromere, a pair of telomeres, and origins of replication D. A centromere, chromatids, and kinetochores E. Spindle fibers, kinetochores, and chromatids 4. The chromosomal structures that serve as the attachment point for spindle fibers are the _____________________. A. telomeres B. origins of replication C. centromeres D. kinetochore proteins E. histone proteins 5. The natural ends of eukaryotic chromosomes that serve to stabilize the ends of the chromosomes are the ______________________. A. telomeres B. origins of replication C. centromeres D. kinetochore proteins E. histone proteins 6. _______________ is the part of interphase within the cell cycle where the cell growth and protein synthesis necessary for cell division and DNA replication take place. A. G1 B. S C. G2 D. M E. Telophase 7. __________________ is the part of interphase within the cell cycle where additional biochemical reactions take place preparing the cell for mitosis. A. G1 B. S C. G2 D. M E. Telophase 8. __________________ is the part of interphase within the cell cycle where DNA replication takes place. A. G1 B. S C. G2 D. M E. Telophase 9. What are checkpoints? A. Key transition points in the cell cycle that lead to cancer B. Periods during the cell cycle that ensure all cellular components are in good working order C. Transition points during the process of replication that allow DNA repair D. The last process that occurs before a cell divides E. Critical points that ensure correct and complete cytokinesis 10. What is the stage in mitosis when sister chromatids separate at the centromere and move to opposite poles of the cell. A. Prophase B. Prometaphase C. Metaphase D. Anaphase E. Telophase 11. What is the stage of mitosis where the chromosomes are arranged on the equatorial plane of the cell. A. prophase B. prometaphase C. metaphase D. anaphase E. telophase 12. What is the stage of mitosis where the chromosomes ini.

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describe the oceans solubility pump and the oceans biological pump using the pools of carbon (DIC, PIC, POC, DOC) and the processes. how are the two linked? where does the ocean \"take up\" C and where is it released from the ocean? Solution The oceans play an important role in regulating the amount of fever to in atmosphere because 02 can move quickly into and out of the oceans. It is estimated that approximately 93% of Co2is found in oceans. In oceans the solubility pump is physicochemical process which transports dissolved inorganic carbon to the interior. The solubility pump is driven by to principal factors. First one 4more C02 can dissolve into cold polar waters thane warm waters. As major ocean currents more from tropics to the poles they are cold and take more carbon dioxide from the atmosphere secondly the higher latitude zones also places where deep waters are formed as the water gets cold they become denser and sink into oceans interior absoring the Co2 accumulated on the surface. Bioloical pump: in this process carbon dioxide moves away from the surface ocean. Microscopic Marine animals called zooplankyon eat the phytoplankton and provide the basis for the food web for all animal life in the ocean. Although most of the fever to taken up by phytoplankton is recycled near the surface 30% sinks into the deeper waters before converted by Marine bacteria only 0.1 % reaches the sea floor as sediment. Carbon is cycled through the ocean biological processes of photosynthesis respiration and decomposition of aquatic plants. As the oceanic plants don\'t have large Woody stems the decomposition after quickly then on land Judo this very little carbon is stored in the ocean prove biological processes the total amount of carbonn update and carbon loss from the ocean depends on the balance of organic and inorganic processes. Carbon dioxide is soluble in water it reacts with water to form several ionic and nonionic compounds called dissolved inorganic carbon(DIC) for example aquous carbon dioxide ,carbonic acid, bicarbonate and carbonate. Carbon enters the ocean by dissolving in the water it also enters through rivers and other water bodies it is converted by organisms into organic carbon by photosynthesis and the food chain also helps in this process if circulates in the layout for longer periods before getting deposited as sediments. Oceanic absorption of Co2 is considered as very important form of carbon sequestration limiting the rate of carbon dioxide in the atmosphere. Dissolved organic carbon DOC in Marine systems is one of the cycled reservoir of organic matter on earth and it makes up 20% of all organic carbon in general these compounds are formed do the decomposition processes of organisms in the Marine system. It is defined as the organic matter that is able to pass through a filter range in size between 0.7 and 0.22 um. Particulate organic carbon POC is the carbon that is too large and is tilted out of your sample. Dissolved and parti.

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Understand and describe the following technologies Flow Cytometry, .pdf

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1. What would determine protein levels in cells? 2.Draw a hypothetical strand of bacterial DNA containing a gene. 3.Draw and label all components that are required for transcription and translation to a peptide. 4.Briefly describe the function of each component. Solution Q.No 1 Accurate measurement of the amount of specific protein a cell produces is important for investigating basic molecular processes.Protein levels can be quantified using a fluorescent reporter. Relative protein levels can be quantified in single living cells. Genome editing allows for quantification of endogenous protein levels. Q.No 2 5\'-GTGTCCGTCTAATATTGTGAGATGTTATATCCCGCCGTCAACACCATCAA-3\' 3\'-CACAGGCAGATTATAACACTCTACAATATAGGGCGGCAGTTGTGGTAGTT-5\' 5\'-ACAGGATAATCGCCTGCTGGGGCAAAGGCGGTGAAGGTAAAGGTGTTGCC-3\' 3\'-TGTCCTATTAGCGGACGACCCCGTTTCCGCCACTTCCATTTCCACAACGG-5\' Q.No 3 DNA ------------------- RNA ------------------- Protein Transcription Translation (DNA, Helicase ) (mRNA,tRNA,codons,aminoacid, ribosomes) Q.NO 4 Amino acids – twenty molecules that are the building blocks of proteins. String of amino acids make up protein’s primary structure. Anticodon – a sequence of three nucleotides on a tRNA molecule that bond to a complementary sequence on an mRNA molecule. The anticodon sequence determines the amino acid that the tRNA carries. Codon – a sequence of three nucleotides on a mRNA molecule that encode a specific amino acid Cytoplasm - The organelles of eukaryotic cells, such as mitochondria, the endoplasmic reticulum, and (in green plants) chloroplasts, are contained in the cytoplasm. DNA - the molecule that stores and encodes an organism’s genetic information. DNA is a double helix molecule made up of two twisted strands that are held together by hydrogen bonds between paired nucleotides. The two strands are chemically oriented in opposite directions. messenger RNA (mRNA) – a type of RNA that conveys genetic instructions on how to assemble proteins from the cell’s DNA to its protein-making machinery. mRNA contains a copy of one or a few genes from a cell’s chromosome. nucleotides - the building blocks of DNA and RNA molecules that contain the cell’s genetic code. Adenosine, cytidine, guanosine, thymidine, and uridine are all nucleotides. Nucleus - The jellylike material that makes up much of a cell inside the cell membrane, and, in eukaryotic cells, surrounds the nucleus. Ribosomes A ribosome is a molecular machine that coordinates protein assembly. Ribosomes are composed of several proteins with tightly coiled RNA (called ribosomal RNA or rRNA) wrapped around them. RNA polymerase – It sis an enzyme that produces primary transcript RNA. In cells, RNAP is necessary for constructing RNA chains using DNA genes as templates, a process called transcription. transfer RNA (tRNA) – a type of RNA that is folded into a three-dimensional structure. tRNA carries and transfers an amino acid to the polypeptide chain being assembled during translation..

1. What would determine protein levels in cells2.Draw a hypotheti.pdf

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Tversky and Kahneman1 asked a group of subjects to carry out the following task. They are told that: Linda is 31, single, outspoken, and very bright. She majored in philosophy in college. As a student, she was deeply concerned with racial discrimination and other social issues, and participated in anti-nuclear demonstrations. The subjects are then asked to rank the likelihood of various alternatives, such as: (1) Linda is active in the feminist movement. (2) Linda is a bank teller. (3) Linda is a bank teller and active in the feminist movement. Tversky and Kahneman found that between 85 and 90 percent of the subjects rated alternative (1) most likely, but alternative (3) more likely than alternative (2). Is it? They call this phenomenon the conjunction fallacy, and note that it appears to be unafected by prior training in probability or statistics. Is this phenomenon a fallacy? If so, why? Can you give a possible explanation for the subjects\' choices? Solution Let the events A = ``Linda is a bank teller\'\' and B = ``Linda is active in the feminist movement\'\'. Since alternative (3) corresponds to the event \"A and B\", it\'s less likely than alternative (2) which corresponds to the event \"B\" ( event \"A and B\" is obviously a subset of event \"B\")..

Tversky and Kahneman1 asked a group of subjects to carry out the fol.pdf

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The numbers of regular season wins for 10 football teams in a given season are given below. Determine the range, mean, variance, and standared deviation of the population data set. 2,10,15,2,15,8,15,9,4,9 Solution Range = Maximum - Minimum = 15 - 2 = 13 Mean = sum of all the values/ total of values = (2+10+15+2+15+8+15+9+4+9)/10 = 8.9 Standard deviation = 4.825971405 Variance = 23.2921015215815949.

The numbers of regular season wins for 10 football teams in a given s.pdf

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