a&p
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Cell life cycle | the series of changes a cell goes through from the time it is formed until it divides
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| Interphase | period in which the cell grows and carries on its ususal metabolic activities (metabolic phase)
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| Cell division | time when the cell reproduces its self
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| stages of mitosis | (PMAT)Prophase, metaphase,anaphase,telophase
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| Mitosis | the formation of 2 daughter cells
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| Prophase | as cell division begins, the chromatin treads coil and shorten so that visible barlike bodies called chromosomes appear
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| Metaphase | in this short stage, chromasomes cluster and become alighned at the metaphase plate so that a straightline of chromasomes is seen
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| Anaphase | the centromes that have held the chromatide together split. chromatides (now called chromosomes again) begin to move slowly apart, drawn toward opposie ends of the cell
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| Telophase | essentially prophse in reverse. chromosomes at opposite ends uncoil to become thread like chromatin again, spindles break down and disappear a nuclear envelope forms around each chromatin mass, nucleoli appear in each daughter cell
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| Cytokinesis | division of the cytoplasm, begins duringlate anaphase
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| cleavage furrow | appears over the midline of the spindle and evetually squeezes or pinches the original cytoplasmic mass into two parts
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| binucleated/multinuceated cells | in some cases the cytplasm does not divide, this condition leads to the formation of ________or______ cells (fairly common in the liver
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| DNA replication process | the precise trigger for DNA synthesis is unknown. rhe process begins as DNA uncoils and gradually separates into its two nucleotides,the strands then serve as templates for building new nucleotides
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| Complimentry nucleotids | Adenine bonds with tymine guanine bonds with cytosine
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| Protein synthesis/protien polypeptide | DNA serve as the master bluprint for_________ __________ a gene is defined as a DNA segment that caries the information for building one____ or ______chain
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| Enzymes | biological catalysts that reulate chemical reations in the cell
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| rRNA (ribosomal RNA) | help form the ribosomes where proteins are built
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| tRNA (transfer RNA) | help transfer amino acids from outside the nucleus into the nucleus
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| mRNA (messenger RNA) | carry the instructions for protein synthesis
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| RNA | ribonucleic acid , functions as messenger and decoder for specify the structure of proteins to be built at the ribosomes
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| Amino acids | buildingblocks of proteins that are joined during protein synthesis (examples phenylalanine and glycine
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| Triplet code | three-base sequence specifying a particular amino acid on the DNA gene
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| Codons | coresponding 3 base sequences on mRNA to triplet code on DNA
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| Anticodon | recognize the mRNA codon "calling for" the amino acid they are toting they can do this because they have a special three base sequence called a _________ on their "head" that can bind to the complimentary codons
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| Ttranscription | involes the transfer of information from DNA's base sequence into the compimentary base sequence of mRNA
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| Translation | protein synthesis, the language of nucleic acids(base sequence)is changed to the language of proteins(amino acid sequence)
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