問題一覧
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Almost every cell in our bodies has genetic material in the form of
DNA
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DNA, the primary genetic material of living organisms, stores genetic information in the sequences of its
Nucleotides
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aid in DNA packaging.
Positively charged histone proteins
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Interphase DNA is found in the form of
Chromatin
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a complex of DNA and proteins
Chromatin
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Chromatin in dispersed inside the ----------- during interphase.
Intact cell nucleus
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Chromatin will sometimes need to further condense into a highly coiled and compact structure. This highly condensed form of DNA is known as a
Chromosome
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Humans have individual chromosomes.
46
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Chromatin condenses into chromosomes. Each half of the chromosome is a
Chromatid
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The life cycle of a cell is known as the ------, and this describes how cells grow, develop, and reproduce.
Cell cycle
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Three Stages of the Cell Cycle
Interphase
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This stage is named so because it is when the cell synthesizes a copy of its DNA in a very notable process called DNA replication.
S phase
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Sex cells or gametes undergo
Meiosis
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somatic cells or non-sex cells undergo
Mitosis
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is marked by the formation of a ------ in animal cells.
Cleavage furrow
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is marked by the formation of a -------- in plant cells.
Cell plate
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refers to the division of the nucleus and genetic material
Meiosis and mitosis
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refers to the division of the cytoplasm.
Cytokinesis
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1st cell cycle check point
G1 to S checkpoint
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2nd cell cycle checkpoint
G2 to M
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3rd cell cycle checkpoint
Metaphase checkpoint