Lecture 4 Flashcards
Which statement describes the characteristics of the protists which are considered amoebas?
amoeba and slime mold
Which statement describes the characteristics of the protists which are considered plasmodial slime molds?
a huge single-celled multinucleate, oozing masses
Which statement describes the characteristics of the protists which are considered cellular slime molds?
single cells combine and each nucleus differentiate.
Which statement describes the characteristics of the protists found within Phylum Choanoflagellida?
Most likely common ancestor of sponge
Single emergent flagellum stitching out of them, surrounded by a funnel shaped contractile collar, composed of filaments that’s similar to how sponge have theirs. Feed on bacteria
Why are choanoflagellates important evolutionarily speaking?
Ancestor of anything kingdom animalia and fungi. They are responsible for all the multicellularity of all organisms
Which of these statements do not explain a defining characteristic of organism found within Kingdom Fungi?
unicellular and have their own phylum, long slender filaments
Multicellular fungi are primarily filamentous in their growth form and have a body which is composed of long, slender filaments called _____________. Fill in the blank.
septa
What does it mean if a fungi undergoes plasmogamy?
n+n stage because they not fusing yet they just in the same cell
What does it mean if a fungi undergoes karyogamy?
you fuse the two nucleoli you make them into one
During sexual reproduction, some fungi undergo a stage in which two haploid cells coexist in a single cell called a _____________ for some period of time before fusing to make a diploid nucleus. Fill in the blank.
dikaryon
All fungi have cell walls made of ____________. Fill in the blank.
chitin
Fungi undergo nuclear mitosis (closed mitosis) to complete cellular division. Which statement describes nuclear mitosis?
Fungi never opens their nuclear envelope ever. Instead it takes place in the cell.
Regarding the body of a fungus, which statement describes one of the type of hyphae a fungus can possess? (there are technically two)
Continuous or branching tubes filled with cytoplasm and multiple nuclei
Made of long chains of cells joined end to end and divided by cross walls called septa
Regarding the body of a fungus, what is a mycelium?
can attach to a tree to get all its carbohydrates and sugars, trees can only grow big by
Regarding how fungi reproduce, what is the difference between a monokaryotic and dikaryotic cell?
Dikaryon- two nuclei in one cell
Monokaryon - one nuclei, one cell