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