Exam #2- chapter 29

features of parabasis and diplomonads or of the euglenozoans

- modified mitochondria / flagella & two nuclei -chloroplast / unique flagella

an innovation that occurred early in protist evolutionary history was endosymbiotic bacterial cells giving rise to --- and --- organelles found in modern protist

-mitochondria -chloroplasts

what characteristics do eukaryotes have that prokaryotes lack

-nuclear envelope -organelles -cytoskeleton

which of the following are important features of eukaryotes that distinguish them from prokaryotes

-presence of a nucleus -presences of a cytoskeleton -presence of organelles such as a mitochondria and chloroplast

primary secondary tertiary

1 prokaryote 2eukaryote that posses a chloroplasts 3eukaryote with secondary chloroplast

steps to development of the cellular slime mold dictystelium discoideum in order

1 spore germinates 2 if they run out of food 3 amoebas form a mound 4 amoebas from a slug 5 culmination occurs 6 a fruiting body is produced inside of which amoebas are encysted

Fossil evidence of eukaryotes date back to

1.5 BYA

Analyze the following statements and choose the one that is most accurately supports the endosymbiotic theory

Antibiotics that inhibit protein synthesis in bacteria can have the same effect on mitochondria

Choose all of the following the exhibit an alternation of multicellular generations.

Brown and red algae

When food is scarce, cells of this organism communicate with each other to form a multicellular slug

Cellular slime molds

even the chloroplasts of different algae are not monophyletic, it is thought that all chloroplast derived from a single line of

Cyanobacteria

Choose all of the following that are photosynthetic

Diatoms and dinoflagellates

Which feature of the chonanoflagellates was likely the most significant for the evolution of animals?

Flagellum with a funnel shaped, contractile collar also found in sponges

even though chloroplasts of diff algae are not monophyletic it is thought that all chloroplasts derived from a single line of

cyanobacteria

The function of the apical complex in apicomplexans is to

Penetrate host tissue

which of the following is the best def of endosymbiotic bacteria

bacteria that live within other cells and preform specific functions for their host cells

If a cell contains a pellicle, it

can change shape readily

Which is most likely the ancestor of animals?

choanoflagellates

DNA is not found in this organelle

endoplasmic reticulum

the nucleus and the er of eukaryotes are thought to have evolved

from infoldings of the plasma membrane

the earliest eukaryotic cells evolved through the transfer of genes across species boundaries and process called ---

horizontal

Trypanosomes are examples of

kinetoplastids

Both diplomonads and parabasalids

lack mitochondria

the theory of endosymbiosis was originally proposed by mereschkn

lynn margulis

According to the endosymbiotic theory, non photosynthetic energy producing aerobic bacteria were engulfed by larger

mitochondria

during cell division the separation of replicated chromosomes into two daughter cells is called ----

mitosis

eukaryotes differ from prokaryotes in many ways ; for example eukaryotes posses compartmentalization in the form of--- such as mitochondria and chloroplasts

organelles

Chloroplasts are

photosynthesizing organelles of plants and algae

Stramenopila are

small hairs on flagella

The products of budding are

two cells, one of which is smaller than the other