Flashcards in Unit 8: Biodiversity, Bacteria Kingdoms (8.3) Deck (54)
Prokaryotes (Bacteria) are the _______ organisms and most ________ organisms on the planet.
Examples of famous bacteria
Plague, TB, Cholera, Botulinum, and Anthrax.
Are most bacteria harmful?
Bacteria are essential for life to exist. They are involved in nutrient recycling – they are __________.
Two domains of bacteria
Bacteria (common) and Archaea (extremophiles)
The genetic difference (between domains) is located in the small subunit of the _________'s RNA sequence.
ribosome (because all cells have ribosomes but not organelles)
All prokaryotes are ____cellular.
The Three basic shapes of prokaryotes
Cocci (Means “round”.)
Bacilli (Means “rod”.)
Helical (Means “spiral”.)
Most prokaryotes will have a ______ ______. (This is not the same as a plant’s cell wall.)
What is the cell wall primarily for?
It also helps prevent the prokaryotes from bursting in an _______ environment. (The cell is _______ to water.)
The cell wall is mainly composed of proteins and sugars. (These are called _________.)
Scientists perform a _____ staining for easy, fast identification of most bacteria.
(stain blue) (They possess a thick peptidoglycan layer.)
(stain Red) (These posses a thin peptidoglycan layer between phospholipids layers.)
are more dangerous to humans and are usually resistant to antibiotics.
Some bacteria produce a _______ that covers the cell wall. The ________ is a sticky substance for adherence to surfaces. This capsule material is what actually makes people sick; not the bacteria.
Some prokaryotes have _______, or cilia/fimbraie, or a ______ body shape for movement.
Some prokaryotes can move by “________”. (“Spitting” out a layer of mucous in front of them to slide on.)
refers to movement in response to a stimulus. (These terms could be used with any organism.)
(_) indicates movement “toward”; (_) indicates movement “away”.
The ________ tells the type of stimulus. (photo-light; geo-gravity; rheo-current; chemo-chemical)
A prokaryote genome is about _/_____th the amount of a Eukaryotic cell genome.
It consists of a single circular strand located in the _______ region. (It is not linear, like in Eukaryotes.)
The Domain _______ have histones to help DNA coil up; the Domain Bacteria do not have histones.
Prokaryotes also have _______ for exchanging. (Most plasmids contain resistance information.)