Miami Dade General Microbiology (MCB 2010) 3rd Test Do Not Write on this MULTIPL

Question

Miami Dade General Microbiology (MCB 2010) 3rd Test Do Not Write on this MULTIPLE CHOICE: CHOOSE THE BEST ANSWER TO EACH QUESTION FROM OPTIONS "a" TO "d". 1) Counterstain for Gram stain is A) A basic dye B) A negative stain C) Special Stain D) An acidic dye Type: MC Page Ref: 67-71 Topic: Gram profile t a cell wall, Protozoa are protected by modified Plasma Membrane that is made of A) Chitin B) Pellicle C) Silica D) Cellulose Type: MC Page Ref: 276-281 Topic: Kingdom profile Skill: Requires Analysis 3) During cell division, Animal cells attach duplicated chromosomes to their A) Peroxisome B) Lysosome C) Centrioles D) Nucleolus Type: MC Page Ref: 276-281 Topic: Kingdom profile Skill: Requires Analysis 4) Fungi and Plants have a lot in common; however only one A) is Eukaryotic B) forms organelles C) has a Nucleus D) Contains Chloroplast Type: MC Page Ref: 276-281 Topic: archaea Skill: Requires Analysis 5) It is estimated that of known bacterial toxins produce disease by disrupting the plasma membrane of human eukaryotic cells A) 75% B) 25% C) 40% D) 65% Type: MC Page Ref: 436-441 Topic: Toxins Skill: Requires Recollection

Explanation / Answer

1) A. A basic dye

* finally a counterstain of basic dye is applied to give decolorized gram negative bacteria a pink. Some laboratories use safranin instead of a basic dye stain.

2) B. Pellicle

* It is a tissue or protein that serves as a coating or protective Layer to the protozoas.

3. C. Centrioles

* centrioles began to move in opposite end of the cell and microtubules extend from the centriole and began to attach to the centromeres of chromosomes.

4. D. Contains chlotoplast

* plants contain chloroplast for the process of photosynthesis while fungi they are not plants, they do not perform photosynthesis so they don't contain chloroplast.

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