A cell that is totipotent ____
a. has the potential to become any cell type of the adult
b. induces nearby cells to follow a certain developmental pathway
c. will never differentiate
d. will not undergo determination
e. has unregulated gene expression
ANSWER: a
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The process which results in excess phosphate being released into lake or water stream due to human activity is called __________.
A.)cultural eutrophication B.)phophorylation C.)sedimentation D.)decomposition E.)denitrification F.)condensation
The selective permeability of a membrane refers to the ____
a. movement of a molecule from an area of high concentration to an area of low concentration b. ability of a substance to pass through any membrane c. ability of only certain molecules to pass across a membrane d. need for carrier proteins to transport some molecules across a membrane e. ability of molecules to be transported across a membrane
What is the difference between a genetic disorder and a genetic abnormality?
a. There is no difference between a disorder and an abnormality b. The abnormality is always caused by environmental stimuli. c. The disorder will kill the individual while the abnormality is not life threatening. d. The disorder is always caused by environmental stimuli. e. The abnormality will kill the individual while the disorder is not life threatening.
The type of cleavage seen in deuterostomes is called ________ cleavage.
Fill in the blank(s) with the appropriate word(s).