Each new cell that forms during cleavage is called a(n)
a. zygote.
b. morula.
c. gastrula.
d. blastomere.
e. endoderm.
D
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A cell is minimally defined by ____
a. a nucleus that contains DNA b. an organized chemical system and specialized molecules surrounded by a membrane c. an organized chemical system for harnessing energy d. a membrane comprised of phospholipids e. specialized molecules that respond to their environment
Which method often results in colonies developing down throughout the agar along with some colonies on the surface?
A. Streak plate B. Spread plate C. Replica plate D. Pour plate
Inherited mutant tumor suppressors produce a dominant susceptibility to cancer, but the mutant alleles are actually recessive in the cancer
Indicate whether the statement is true or false
What kind of pathogen would retain its ability to cause infections after being treated with powerful proteolytic chemicals that would destroy all proteinaceous material?
A. A viroid B. A bacterium C. A fungus D. A virus E. A prion