The ____ is the initial opening between the developing gut and the outside environment for most

animal embryos.



a. schizocoelom
b. mesoglea
c. archenteron
d. enterocoelom
e. blastopore


E

Biology & Microbiology

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Cultures of genetically identical cells are called ____

a. bacteriophages b. clones c. prophages d. prions e. auxotrophs

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The poison ricin inactivates which of the following cellular organelles?

a. mitochondria b. ribosomes c. smooth ER d. Golgi bodies e. nucleus

Biology & Microbiology

Chromosomes decondense during what phase of mitosis?

a. prophase b. metaphase c. anaphase d. telophase

Biology & Microbiology

Which of the following statements about biofilms is true?

a. They are formed by prokaryotes living in a watery environment. b. They may develop on surgical implants. c. An example is dental plaque. d. They are formed by prokaryotes living in a watery environment and they may develop on surgical implants. e. They are formed by prokaryotes living in a watery environment, they may develop on surgical implants, and an example is dental plaque.

Biology & Microbiology