A cluster of intracellular linker proteins associated with a junction is called a(n)
A) annulus.
B) connexon.
C) plaque.
D) tonofilament.
E) accessory protein complex.
Answer: C
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Four of the five substances listed below are related to the kidney in one way or another. Select the
exception. a. renin b. thyroid stimulating hormone c. ADH d. angiotensin I e. erythropoietin
As a microbiologist, you have been asked to investigate the regulation of a novel gene in a bacterial species. Given what is known about bacteria, the logical place to begin your investigation is
A. translational regulation. B. regulation by enhancer elements. C. transcriptional regulation. D. regulation by general transcription factors. E. alternative splicing regulation.
During gastrulation, invagination occurs at the
A) archenteron. B) blastocoel. C) endometrium. D) blastopore. E) trophoblast
The rough ER differs from the smooth ER in that it is covered with:
a. mitochondria b. microtubules c. chromatin d. ribosomes