Which structure is part of the placenta and completely surrounds the embryo?
A) chorion
B) amnion
C) yolk sac
D) allantois
Answer: A
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The primary domains were founded based on comparative ribosomal RNA gene sequencing
Indicate whether the statement is true or false.
What types of behaviors would you predict would be controlled by quorum sensing?
A. Behaviors effective for single bacteria B. Behaviors effective for groups of bacteria C. All behaviors D. Only virulence behaviors
Because incidence takes into account both old and new cases, it is an indicator of the spread of a disease.
A) True B) False
Progression through the cell cycle requires a cyclin to bind to a Cdk because _________
(a) the cyclins are the molecules with the enzymatic activity in the complex. (b) the binding of a cyclin to Cdk is required for Cdk enzymatic activity. (c) cyclin binding inhibits Cdk activity until the appropriate time in the cell cycle. (d) without cyclin binding, a cell-cycle checkpoint will be activated.