Which of the following organelles maintains cell shape, supports cellular structures, and generates cell movements?
A)lysosome
B)smooth endoplasmic reticulum
C)centrosome
D)centriole
E)cytoskeleton
E)cytoskeleton
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Shedding of the endometrial lining occurs
A. because the nondominant follicles undergo atresia. B. a day after the LH surge. C. because of an increase in the level of FSH. D. because ovulation disrupts the growing follicle. E. as a result of a fall in plasma levels of estradiol and progesterone.
Where is the headquarters of the reticular formation located?
A) telencephalon B) metencephalon C) diencephalon D) myelencephalon E) mesencephalon
A/an __________ is an entrance or outlet from a body cavity
Fill in the blank(s) with correct word
Fungi are
A. multicellular parasites that reside within a host. B. viruses that are fragments of infectious proteins. C. prokaryotic cells. D. protozoans lacking a cell wall. E. eukaryotic cells with a cell wall.