diversity Flashcards
what is the correct format for writing specific names
Genus 1st which has to be capitalized and then species 2nd; italicize if typing and underline if writing
what are the six kingdoms
bacteria, archaea, protista, plantae, fungi, animalia
define dichotomous key
It’s a system for narrowing down the identification of a specimen, one step at a time. The tool consists of two-part choices that lead the user to correct identification.
what are the levels of biological classification
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
bacteria – how do they reproduce? how are they named
bacteria and archaea can reproduce both sexually and asexually
Asexual Reproduction by binary fission
1) A copy of its original chromosome is made
2) Cell elongates to certain size
3) Chromosomes separate
4) Cell builds a partition between each cell is called a
septum
5) Original cell splits into 2 IDENTICAL CELLS
sexual reproduction by conjugation
1) Can occur in less favorable conditions
2) DNA is exchanged between two different cells producing NEW genetic combinations
3) One cell links to another through a pilus.
4) Genetic info is exchanged.
5) Binary fission then occurs to produce more cells with the new genetic combo.
lytic
Virus (life from days-1 week). The phage attaches to the cell, phage inserts its DNA, DNA circulates, new phage DNA and proteins are made, phages assemble, cell breaks releasing phages.
lysogenic
(past week-months-years) : after the phage DNA circulates, the phage’s DNA injects into the chromosome, then reproduces, and could go into many cell divisions or occasionally a prophage may leave the chromosome, but then rejoin again.
how do vaccines work in the body
Liquid preparations of dead or weakened viral/bacterial cells that stimulate the body’s immune system to fight invaders and produce antibodies.
