________ are the proteins that appear as dark bands that mark the ends of the sarcomeres

Fill in the blank(s) with correct word


Z lines

Biology & Microbiology

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A protein that initiates gene transcription and allows for non-glucose molecules to be used is  

A.  operon. B.  repressor. C.  promoter. D.  operator. E.  CAP.

Biology & Microbiology

The discrepancy between the number of microbial cells observed by microscopic examination and the number of colonies that can be cultivated from the same natural sample may be due to ________.

A. microbial motility B. incorrect culture conditions C. nonviable organisms D. nonviable organisms and incorrect culture conditions

Biology & Microbiology

What class of sensory receptors directly affects the activity of the cardiac center in the medulla oblongata? 

A. sensory cells in the juxtaglomerular apparati of the kidneys B. blood glucose sensors in the pancreas C. blood pH chemoreceptors in the aortic and carotid bodies D. baroreceptors in the arch of the aorta and in the carotid arteries E. osmoreceptors in the hypothalamus

Biology & Microbiology

Katie knows to be especially careful with what she eats and drinks during her first trimester of pregnancy because a key aspect of development called ________ takes place during this period.

a. myelinization b. anencephaly c. organogenesis d. endometriosis

Biology & Microbiology