Question

1-The following is a portion of an abstract from The Journal ofStructural Biology:
Although the ____________ of Paramecium is made up of many sets ofmore reduced stacks of
cisternae than those of many mammalian cells, the stacks inParamecium always bear a close
relationship to a transitional element of the ER from whichnon-clathrin-coated transition
vesicles arise. In QF-DE replicas two networks of filaments areclearly shown; one is in this ER-
____________ transition zone and the other is on the trans side ofthe _____________ stack. The
network associated with the trans-______________ region links anumber of vesicular elements.
The network in the transition zone spans the distance between theER and the cis-cisterna of the
______________ stack and has branches extending to the coats of theenmeshed nonclathrincoated
transition vesicles.
Which term best fills in the blank?
a. Rough endoplasmic reticulum
b. Lysosome
c. Mitochondria
d. Chloroplasts
e. Golgi (apparatus)

2. Mitochondria
a. are prevalent in aerobically respiring bacteria.
b. are capable of both synthesizing and storing starch.
c. have many integral membrane proteins across their innermembrane.
d. rely entirely upon chromosomal genes for synthesis of neededproteins.

3. Mycobacterium tuberculosis trapped in a phagosome of a host cellis able to resist
degradation by the digestive enzymes of the lysosome upon formationof the phagolysosome. With this in mind, which events occur asM. tuberculosis “exploits the
system” and enters the host cell?
a. M. tuberculosis binds to an external receptor of aclathrin-coated pit.
b. Macropinocytosis
c. Caveolae, that contain M. tuberculosis, form.
d. Pseudopods form and surround M. tuberculosis.

4. Proteus mirabilis is a bacterium. It is Gram-negative andmotile. Giardia intestinalis is a parastic, eukaryotic, motileprotist. All of the following accurately compares / contraststhesetwo organisms EXCEPT?
a. Whereas Proteus mirabilis has an outer membrane characterized byLPS, Giardia intestinalis lacks this feature.
b. Whereas the DNA of Giardia intestinalis is packaged by wrappingaround histone octamers to form nucleosomes, the DNA ofProteus mirabilis is packaged largely by supercoiling.
c. Infections caused by both Giardia intestinalis and Proteusmirabilis could be effectively treated using penicillin.
d. Whereas the flagella of Giardia intestinalis are composed ofnine pairs of microtuble doublets, the flagella of Proteusmirabilis are composed of a basal body, hook andfilament.
e. Unlike the flagella of Proteus mirabilis, the flagella ofGiardia intestinalis are membrane-bound.