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
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Cultures of genetically identical cells are called ____
a. bacteriophages b. clones c. prophages d. prions e. auxotrophs
The poison ricin inactivates which of the following cellular organelles?
a. mitochondria b. ribosomes c. smooth ER d. Golgi bodies e. nucleus
Chromosomes decondense during what phase of mitosis?
a. prophase b. metaphase c. anaphase d. telophase
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.