Striated muscles appear striated or banded under a microscope. Striated muscle fibers include (Choose all correct answer options):
A. skeletal muscle
B. muscles of cnidarians
C. smooth muscle cells
D. cardiac muscle cells
A,D
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Prokaryotes consist of ________.
A. organisms belonging all to the same domain, bacteria B. organisms belonging to three different domains, bacteria, archaea, and protists C. organisms belonging to eukaryotes D. organisms belonging to two different domains, bacteria and archaea
The topoisomerase ________ introduces positive supercoils in DNA, which stabilizes DNA and prevents the DNA helix from denaturing at high temperatures
A) reverse ligase B) ligase C) DNA gyrase D) reverse DNA gyrase
Glucose metabolism is regulated by several hormones. The predominant second messenger in these
mechanisms is
a. glucagon. b. insulin. c. adenylyl cyclase. d. cyclic AMP. e. mRNA.
________ synthesis is a damage-tolerant mechanism that allows synthesis of a new DNA strand from a damaged template
Fill in the blank with correct word.