What protein, released by cytotoxic T (TC) cells, perforates a target cell's plasma membrane so that enzymes can enter and fragment the target cell's DNA?
A) perforins B) interferons C) cytokines D) interleukins
Answer: A
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The ovaries and uterus are held in position within the pelvis by bands of tissue called
A. follicles. B. muscles. C. endometrium. D. ligaments. E. tendons.
The process of spermatogenesis from primary spermatocyte to sperm
A. takes about three weeks in the human. B. requires participation of Sertoli cells. C. occurs when a male is an embryo, ceasing at birth. D. occurs as the cells gradually travel between two closely attached Leydig cells. E. occurs in the epididymis.
In appearance, microvilli are described as Cytoplasmic extensions Single, whip-like structures Tiny, non-motile, finger- like projections
What will be an ideal response?
Which plexus is NOT served by the vagus nerve?
A) brachial plexus B) pulmonary plexus C) esophageal plexus D) cardiac plexus