(5) Sci 7-Terms to Learn #5 DNA and Cell Cycle

DNA

the hereditary material found in the cell,

contains all the instructions for life

base pair

the bases (adenine, guanine, cytosine,

thymine) pair up to form the rungs of the

DNA ladder. A bonds to T. C bonds to G

nucleotide

a subunit of DNA made of a sugar,

phospate and one base

chromosome

DNA and proteins coiled up and condensed into "X" shaped structures

double helix

the twisted ladder shape of the DNA molecule, alternating sugars & phosphates are the sides and bases are the rungs

cell cycle

the life cycle of a cell; the stages are: interphase, mitosis, and cytokinesis

mitosis

division of the nucleus in eukaryotic cells that forms two identical body cells

asexual reproduction

reproduction in which ONE parent produces identical offspring (ex. binary fission, regeneration, budding)

centrioles

organelles that develop spindle fibers and are used by the cell to move chromosomes around during cell division

sexual reproduction

reproduction that requires TWO parents that produces offspring that share characteristics of both parents