the border of all cells that serves as a selectively permeable barrier and site of communication with the external environment
What is plasma membrane?
100
a membrane-bound sub-cellular structure where Dna is located in eukaryotic cell
What is a nucleus
100
a process in which individuals with certain heritable traits are more likely to survive and reproduce in a particular environment
What is natural selection
100
a pair of chromosomes with the same set of genes, each derived from one parent
What is homologous chromsome
100
the first stage of mitosis when chromosomes with sister chromatids condense and the nuclear envelope disappears
What is prophase
200
the content of a cell inside the plasma membrane and outside the nucleus
What is cytoplasm
200
a network of tubules that is part of the endomembrane system in eukaryotic cells specializing in the synthesis and modification of biological molecules
What is endoplasmic reticulum
200
the production of a second copy of a particular sequence of DNA
What is duplication
200
during prophase 1 of meiosis, the association of a pair of homologous chromosomes or four chromatids
What is tetrad
200
the second stage of mitosis when chromosomes with sister chromatids line up along the metaphase plate
What is metaphase
300
a protein-ribosomal RNA complex that is the site of protein synthesis in the cell
What is ribosome
300
a stack of tubules that is a component of the endomembrane system in eukaryotic cells that modifies, sorts, and packages products delivered from the endoplasmic reticulum
What is golgi appartus
300
a reproductive cell or one of its precursors, of a multicellular organism
What is germ cell
300
in cell division, that point at which two homologous chromosomes attach during prophase of meiosis 1
What is synapses
300
the third stage of mitosis when sister chromatids split and move toward opposite poles o the cell
What is anaphase
400
double-stranded DNA pieces that are separate from the chromosomal DNA found in the nucleoid region
What are plasmids
400
an organelle specializing in digestion in animal cells and some protists
What is lysosome
400
a special type of cell division that occurs in sexually reproducing species during which one diploid germ cell produces four haploid cells
What is meiosis
400
one of the alternative forms of a gene
What are alleles
400
the end stage in mitosis when chromosomes begin to disperse and the nuclear envelope reforms
What is telophase
500
rigid wall outside of the plasma membrane
What is a cell wall
500
short microscopic projections of the cell surface specialized for location
What is cilia
500
related to an embryo, or being in the state of an embryo
What is embroyonic
500
number of chromosomes
What is 46
500
the cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells