7.2.1 to 7.3.5 quiz Flashcards
difference bt prokaryote andeukaryote
eukaryotes their DNA in the nucleus, have membrane bound organelles,and can be in single/multi-celled organisms
what is the virus composed of?
protein coat called capsid and nucleic acids
what is a bacteriophage
a virus that infects bacteria
why is the virus nonliving
it does not posses all 6 characteristics of life
what is a vaccine
injection of a weakened agent or part of the protein that stimulates the immune system so when u r exposed to it again ur immune system will be able to fight it off (secondary immune response)
3 ways tocategorize bacteria
Shape (3 kinds), nutrients that it needs to grow, and the cell wall (gram stain
pathogenic bacteria
bacteria that causes disease
what are the 3 basic shapes of bacteria
bacilli(rod-shaped), cocci(spherical-shaped), and spirilli (spiral-shaped).
life cycle of bacteriophage
- bacteria isinfected
- bonds non-specificly
- viral DNA/RNA is injected and it takes control ofthe machinery.
- virus is reassembled and bursts out, killing the cell
life cycle of animal cell
- animal cells r infected-bind to specific protein receptors
- RNA is taken in byendocytosis
- reverse transcription and joins host DNA
- stays dormant-leaves usingedocytosis
- cell usually doesn’t
whats an antibiotic
medicines that fight infections caused by bacteria in humans and animals by either killing the bacteria or making it difficult for the bacteria to grow and multiply.
