Lecture 4

Question 1

Which statement describes the characteristics of the protists which are considered amoebas?

Answer 1

amoeba and slime mold

Question 2

Which statement describes the characteristics of the protists which are considered plasmodial slime molds?

Answer 2

a huge single-celled multinucleate, oozing masses

Question 3

Which statement describes the characteristics of the protists which are considered cellular slime molds?

Answer 3

single cells combine and each nucleus differentiate.

Question 4

Which statement describes the characteristics of the protists found within Phylum Choanoflagellida?

Answer 4

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

Question 5

Why are choanoflagellates important evolutionarily speaking?

Answer 5

Ancestor of anything kingdom animalia and fungi. They are responsible for all the multicellularity of all organisms

Question 6

Which of these statements do not explain a defining characteristic of organism found within Kingdom Fungi?

Answer 6

unicellular and have their own phylum, long slender filaments

Question 7

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.

Answer 7

septa

Question 8

What does it mean if a fungi undergoes plasmogamy?

Answer 8

n+n stage because they not fusing yet they just in the same cell

Question 9

What does it mean if a fungi undergoes karyogamy?

Answer 9

you fuse the two nucleoli you make them into one

Question 10

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.

Answer 10

dikaryon

Question 11

All fungi have cell walls made of ____________. Fill in the blank.

Answer 11

chitin

Question 12

Fungi undergo nuclear mitosis (closed mitosis) to complete cellular division. Which statement describes nuclear mitosis?

Answer 12

Fungi never opens their nuclear envelope ever. Instead it takes place in the cell.

Question 13

Regarding the body of a fungus, which statement describes one of the type of hyphae a fungus can possess? (there are technically two)

Answer 13

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

Question 14

Regarding the body of a fungus, what is a mycelium?

Answer 14

can attach to a tree to get all its carbohydrates and sugars, trees can only grow big by

Question 15

Regarding how fungi reproduce, what is the difference between a monokaryotic and dikaryotic cell?

Answer 15

Dikaryon- two nuclei in one cell
Monokaryon - one nuclei, one cell

Question 16

Regarding how fungi reproduce, what is the difference between a heterokaryotic and homokaryotic hyphae?

Answer 16

Heterokaryotic- if the two are going to be genetically different
Homokaryotic- if the two are genetic the same

Question 17

Fungi are capable of producing both sexual and asexual spores. How are they (a) spread in the environment or (b) grow once they reach the ground?

Answer 17

The wind they rely on the wind