Cardiac muscle cells are associated with

a. bundles.
b. a sheath of dense connective tissue.
c. voluntary responses.
d. cells tapered at both ends.
e. communication junctions.


E

Biology & Microbiology

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The TFIID complex is formed by  

A.  TATA-binding protein TBP and TAFs. B.  TATA-binding protein TBP, TAFs and RNA pol II. C.  TAFs and the core promoter. D.  TATA-binding protein and activators.

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The optimal pH for enzyme 1 is:

a. 2. b. 3. c. 4. d. 5. e. 6.

Biology & Microbiology

Mammals have opposing groups of muscles at a joint; for example, the ________ flexes the forearm and the ________ extends it

a. biceps / triceps b. triceps / deltoid c. deltoid / pectoralis d. pectoralis / triceps

Biology & Microbiology

Rough endoplasmic reticulum has ribosomes on its surface.

a. true b. false

Biology & Microbiology