Which of the following species can be considered exotic in North America?
a. sea lamprey
b. water hyacinth
c. nutria
d. all of the choices
d
Biology & Microbiology
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An enzyme that attaches a phosphate group to another molecule is called a _______________
A. phosphatase B. phosphorylase C. kinase D. cyclase
Biology & Microbiology
Provide a brief description of the variable gene activity hypothesis as it relates to development. What information is often provided in support of this hypothesis?
What will be an ideal response?
Biology & Microbiology
Steroid hormones typically move across the cell and nuclear membranes to bind to receptors in the nucleus
Indicate whether the statement is true or false
Biology & Microbiology
Several serious fungal infections affect the lower respiratory system mainly because fungi
a) are dimorphic. b) are opportunistic. c) produce airborne spores. d) produce toxic proteins.
Biology & Microbiology