Recent questions in Cell Structure and Formation

the diplotene stage is characterised by the presence of

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Which of the following is NOT true? Pachytene is

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The condition where the complex formed by the pair of homologous chromosome adjointed at a synapse is called

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The beginning of the pairing of chromosomes occurs at

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compaction of chromosomes occurs during ____ stage of meiosis

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which of the following is true? Mitosis a. is associated with cell repair b. occurs in the apical and lateral cambium of a plant c. functions to restore the nuclear-cytoplasmic ratio d. it occurs during gametogenesis in both plants and animals

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multinucleate condition leads to the formation of ___ in coconut

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___ is the precursor for cell wall in a plant cell

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the proteinaceous components of the cell that aid in cell division are called

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The chromosomes are best visualised in ___

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Match the following:

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Stages of mitosis in order: a. prophase b. anaphase c. metaphase d. telophase

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plant cells show mitosis in

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cells in G0 phase are : a. metabolically active b. proliferate under certain circumstances c. metabolically inactive d. do not proliferate e. always are in a state of proliferation

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Adult heart cells are predominantly in __ phase of cell cycle

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In the G1 phase of cell cycle: a. cell is metabolically active b. cell is undergoing DNA replication c. no. of chromosome doubles d. Amount of DNA doubles

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Nuclear division is also called

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cell division in humans approximately occurs every __

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__ is a continuous ongoing process while occurs only at specific stages of the cell cycle

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The process of genome duplication to cell consistituent synthesis to cell division is called

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During a cell division ___ takes place

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Haem is a __ in the active site of peroxidases while NAD is a _

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Non-protein components that are required to make the enzyme active are called

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Enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis are

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Competitive inhibitor of succinate dehydrogenase is ___

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The inhibitor that resembles the substrate in its structure is called

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The velocity of an enzymatic reaction upon increasing the substrate concentration: X axis: Substrate concentration Y= reaction velocity

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The activity of enzyme depends on

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All enzymes enhance the rate of the reaction by

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The differnce in the average energy content of the substrate from the that transition state is called

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Find X,Y and Z: C6H12O6----> aerobic--->X ;C6H12O6----> anaerobic--->Y; C6H12O6----> in Yeast--->Z

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Which of the following is true: The rate of a reaction is a. rate of product formed per unit time b. dependdent on temperature c. depends on the presence of catalyst d.rate of the reaction doubles for every 1 degree raise in temperature

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The catalytic site in an enzyme is called ___

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nucleic acids that behave like enzymes are called

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The biomolecules in a living organism are in a/an ______

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____ is called the energy currency of the living systems

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Conversion of glucose into lactic acid is an example of ___pathway

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Anabolic pathways_ while catabolic pathways

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Biosynthetic pathways are _ while degradative pathways are _

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Proteins that catalyse biological reactions are called

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Decarboxylation of an aminoacid results in an____

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The pitch of the DNA is ____

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A and T are linked by hydrogen bonds and G and C have _ Hydrogen bonds between them

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The backbone of the DNA is made of

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In a nucleic acid, bond between the phosphate and hydroxyl group of sugar is a/an ___ bond

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The formation of a peptide bond is a ___ reaction

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Adult Hemoglobin has ____ subunits

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Match the following:

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protein helices are ___

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nitrogenous base+ sugar= and nitrogenous base + sugar+ phopsphate=__

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