Biology I 4

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DNA Polymerase

a group of enzymes

RNA

a chain of enzymes

mRNA

messenger RNA

tRNA

transfer RNA

rRNA

ribosomal RNA

RNA Polymerase

enzymes that bond nucleotides together

Translation

process that translates mRNA into a polypeptide

Codon

a three nucleotide sequence

Anti Codon

complementary to mRNA codon

Start Codon

signals the beginning of an amino acid chain

Stop Codon

signals the end of an amino acid chain

Cell Cycle

is the regular pattern of growth

Mitosis

is the division of the nucleus and its contents

Cytokenesis

is the process that divides the cells cytoplasm

Chromosome

one long, continuous strand of DNA

Histone

a protein that organizes chromosomes

Chromatid

the loose combination of DNA and proteins

Centromere

a region of the condensed chromosome that looks pinched

Binary Fission

is the asexual reproduction of a single-celled organism

Asexual Reproduction

the creation of offspring from a single parent

Gametes

sex cells

Sex Chromosomes

directly control the development of sexual characteristics

Diploid

a cell that has two copies of each chromosome

Haploid

a cell that has only one copy of each chromosome

Meiosis

form of nuclear division that divides diploids into haploids

Sperm

male gamete

Egg

female gamete

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