Quizzes through Midterm Flashcards
Are protozoa prokaryotes or eukaryotes?
eukaryotes
What taxonomic unit is broadest?
domain
What propels a paramecium?
cilia
How are trypanosomes transmitted from human to human?
Tsetse fly
Which are larger, bacteria or protozoa?
protozoa
What color are Gram negative bacteria?
red
Are bacteria prokaryotes or eukaryotes?
prokaryotes
Do bacteria have a nucleus?
no
(T/F) Some bacteria are shaped like pyramids.
false
How can you control the amount of light coming through the microscope?
iris diaphragm or light adjustment knob
What is the purpose of heat fixing the bacteria during the Gram stain?
make bacteria stick to slide
What does the iodine do in the Gram stain process?
makes purple stain stick to cell wall
What should you NEVER do to the microscope?
drop it
(T/F) If someone catches fire in lab the instructor should be notified immediately.
true
What propels a euglena?
Flagella
Which are the largest Algae?
Brown Algae
Under the microscope, how can you tell the difference between a cyanobacteria and spirogyra (green algae)?
Spirogyra have nucleus and/or membrane-bound organelles
How do ascomycota reproduce / what do they make to reproduce?
Spores
In a gram stain, what is added after the crystal violet (purple) stain to cause the purple stain to affix (stick) to a gram positive bacteria’s cell wall?
Iodine
Which polysaccharide stiffens the cell wall of fungi?
Chitin
What is the major contribution fungi make to ecosystems?
Decomposers
