Microbes (bacteria, fungi, and viruses) Flashcards
List three
examples of microbes.
Bacteria, fungi, viruses
State a similarity
between a fungus and a bacterium.
They are both decomposers
What is the major difference between viruses,
bacteria and fungi?
That the viruses are non-living while bacteria and fungi are living organisms.
What are
Pathogens?
Organisms that cause diseases
What are the four methods
that microbes operate?
Decomposers, pathogens, food industry, genetic engineering
What does a
virus depend on for their survival?
A living host
Why r viruses
Harmful?
Because they reproduce quickly, they do not respond to ani-biotics and they are constantly changing into new strains
What is the genetic material of a virus?
DNA & RNA
What is the
composition of the genetic material of virus?
proteins
State the two
possible shapes for bacteria.
Spherical or rod-shaped
What is function of
the cell wall of the bacteria?
Keeps the cell from bursting
What is function of
the mucus on some bacteria?
Provide protection against organisms and reduce the chances of drying up.
What is name of
structure that allows some bacteria to swim?
Flagella
How often does bacteria
Reproduce?
Divides every 20 minutes
How do bacteria feed?
bacteria employ enzymes, or proteins that help them break down different nutrients to a useable form for energy
Do bacteria have nucleus ??
Have no Nucleus- loop of DNA within the cytoplasm
Do bacteria have mitochondria and chloroplasts ??
NO
Are Fungi multicellular or unicellular ??
Most are multicellular except yeast (Unicellular)
What is the nucleus and cell wall of a fungi made of??
They are made of Chitin
How do fungi reproduce ??
They reproduce by making spores that are carried by the wind.
Where does hyphae grow into??
Hyphae grows into a network of treads that form the body of the fungi.
Another name for fungi body??
Fungal body or Mycelium
What does hyphae release ??
Hyphae releases enzymes which digest the food outside the fungus
Name the
thread-like structure of a
fungus??
Hypha
What is the
name of the fungal body?
Mycelium
What do fungi
feed on?
Most fungi feed on dead or decaying matter.
What do fungi need to live??
Water - for growth
Oxygen - for aerobic respiration
Suitable warm temperature
how do parasites gain nutrients ??
Gaining nutrients from living on or in another living organism
Do viruses respire (breath) ??
NO
Are viruses cells??
No they are particles made up of DNA and RNA
DNA??
Deoxyribose nucleic acid
RNA??
Ribonucleic acid
