Genetics And Ecology Flashcards
Pathogens
Disease causing agents such as bacteria and viruses
Bacteria
Single celled organisms responsible for things such as strep throat, staph infection, pneumonia. Treated with antibodies
Viruses
Replicate in the host’s cells. Common cold, flu, AIDS, herpes. Can’t be treated with antibodies
Gametes
Reproductive cells. Haploids, half as many cells as normal cells (diploids).
Meiosis
Gametes are created
DNA
Genetic code, combination of nucleotides. Shape of double helix
Gene
Unit of inheritance contained within an individual’s DNA
Alleles
Varieties of genes, two in each gene from each parents. Same are homozygous, different are heterozygous
Genotype
Genetic makeup including dominant and recessive genes
Phenotype
How genes are expressed in physical characteristics
Prokaryotic
No nucleus
Nucleus
Contains genetic material of cell
Cytoplasm
Outside nucleus, surrounds other cell structures
Ribosomes
Produce proteins
Endoplasmic reticulum
Synthesis of proteins and fats
Golgi apparatus
Packages proteins for use
Lysosomes
Manages cell waste
Centrosomes
Guide cell’s reproduction
Cellular respiration
Mitochondria processes sugar and oxygen to make energy, water, and carbon dioxide
Chromosomes
Tightly coiled threads of DNA
Biosphere
Zone of earth where life naturally occurs, deep crust to lower atmosphere
Biome
Major life zone of interrelated species bound together by similar climate, vegetation, and animal life
Producers
Autotrophs, make food via photosynthesis
De composers
Saprotrophs, break down organic matter and release minerals
Consumers
Heterotrophs, consume other organisms divided into: primary (herbivores), secondary and tertiary (omnivores and carnivores)
Classification of living things
Domain, kingdom, phylum, class, order, family, genus, species
3 domains
Eukaryota - living things with nucleus
Bacteria and archaea - single celled organisms without nucleus
Monera
Bacteria. Prokaryotic cells, most primitive
Protista
Simplest eukaryotes
Fungi
Decomposers