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Flashcards in SPEED Program Deck (5)
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1

Cells undergoing the process of apoptosis, or programmed cell death, change the composition of their plasma membrane as a cell signalling mechanism which results in the cell being recognized and engulfed by macrophages.  Which of the following cell membrane components performs this cell-signalling action? 

Phospholipids

2

patient was diagnosed with chlamydia-positive urethritis and treated with tetracycline.  Which of the following structures was targeted by the medication? 

Ribosomes

Tetracycline inhibits protein synthesis by blocking the attachment of charged aminoacyl-tRNA to the A site on the ribosome. Tetracycline binds to the 30S subunit of microbial ribosomes.

4

During which stage of Prophase I do homologous chromosomes pair up prior to exchange of DNA segments?

Zygotene 

^Ygo lets pair up

5

 The metabolism of alcohol in the liver produces an excess of reactive oxygen species resulting in significant oxidative stress, which damages the liver beyond repair.  Which of the following organelles is involved in the degradation of these reactive oxygen species?

Peroxisome

6

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