The cells of which tissue are connected by gap junctions?
a. skeletal muscle
b. cardiac muscle
c. smooth muscle
d. adipose muscle
e. cardiac and smooth muscle
E
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The biome most known for its rich, deep topsoil is:
a. tundra b. taiga c. tropical rain forest d. desert e. grassland
It is thought that viruses may have originated from cells because ____
a. of their small size b. they are pathogens c. they can only replicate within a host cell d. they do not have organelles e. of their genetic material
Which of the following is common to both Sanger sequencing and next-generation sequencing?
A) radioactive labels B) gel electrophoresis C) tethered DNA fragments D) chain terminating nucleotides E) lasers
Which characteristic do most plants have in common?
A. they are unicellular B. they are prokaryotic C. they produce seeds D. they are autotrophic