Chromatin appears divided into segments called _________________, each of which consists of a core particle and a short segment of linker DNA leading to the next core particle.
Fill in the blank(s) with the appropriate word(s).
nucleosomes
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The process of lactation (milk production) depends on both merocrine and ________ secretion by mammary gland epithelial cells
A) epicrine B) eccrine C) holocrine D) apocrine E) endocrine
What is the main muscle of inspiration?
A. Transversus abdominis B. Diaphragm C. Internal intercostal D. External intercostal
A skeletal muscle fiber is
A. an elongated series of muscles held together by dense connective tissue. B. a skeletal muscle cell. C. a collection of several muscles bound together by a membrane. D. found only in cardiac muscle. E. a contractile filament within the osteon of bone.
Which phase of the menstrual cycle is characterized by the formation of new glands, thickening of the endometrium, and infiltration of blood vessels?
A) secretory B) menstrual C) luteal D) proliferative