Lecture 2 Flashcards
Which of the following is not a characteristic of prokaryotic cells ?
A membrane enclosed nucleus
Prokaryotic cells do not possess
An immune system
The common ancestry of (monophyly) all life is confirmed by
Dna as the genetic material that codes for protein
Most prokaryotes
None of the above ( r agents of diseas,lack ribosomes, evoked from the most ancient eukaryotes, lack a cell wall)
Based on the figure which statement about endosymbiosis origin of eukaryotic mitochondria is true
Mitochondria are derived from endosymbiosis bacteria
Which statement about hyperthemophilic bacteria is true
They live in conditions that may resemble those of earths early environments
WOTF would be favored by acidophilus thermophiles?
Hot sulfur springs
Match the name of the bacteria from the list below with the description that follows: these bacteria photosynthesis using chlorophyll a, produced the oxygen of earths early atmosphere and contain photosynthetic lamellae
Cyanobacteria
Methanogenic euryarchaeotes are obligate anaerobes some of which live in the intestinal tracts of mammals and other animals . From this info one can conclude that the environment in the intestinal tracts
Is low in oxygen
Medications and environment influences that destroy numerous microbes in the human body would
Likely be injurious to human health
The ancestor of photosynthetic euglenids took up the chloroplast of green alga. This explains why photosynthetic euglenids
Have the same photosynthetic pigments as plants
Refer to the figure which shows endosymbiosis events in the evolution of chloroplasts which statement concerning the events shown in part B of the figure is false
The engulfed cell was a prokaryote
Alveolares typically
Possess sacs just beneath their plasma membranes
Which group contains multicellular brown algae and giant kelps
Stramenophiles
Which group can produce a toxin in marine environments that accumulated in Clams mussels and oysters and can cause paralytic shellfish poisoning
Dinoflagellates
What are the organisms shown in the figure
Diatoms
Which protist group includes species that are photosynthetic, multicellular, and many meters long
Stramenophiles
Refer to the figure (plants) Which statement about the eukaryotes shown is false
They are members of animalia
Wotf are protista that do not use photosynthesis
Slime molds
If you were to examine limestone deposits throughout the world, which group of organisms would you expect to find in the greatest abundance
Foraminiferans
Which group uses lobe-shaped pseudopods for locomotion
Amoebozoans
Secretion of digestive enzymes to break down food molecules and then absorption of the breakdown products through the plasma membrane is termed
Absorptive heterotrophy
Rhizoids which function to attach the fungus to a substrate are modified from WOTF?
Hyphae
Pores in the surfaces of ______ allow cell organelle and cytoplasm to pass through.
Septa
