The biological species concept:
a. states that any organisms that are biologically similar constitute a species.
b. states that a species is any group that shares similar DNA.
c. is infrequently used because it is inapplicable to many organisms.
d. defines a species as any group of actually or potentially interbreeding species that produce viable offspring.
e. is the best and most accurate species concept
Ans: d. defines a species as any group of actually or potentially interbreeding species that produce viable offspring.
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The endosymbiont hypothesis is supported by
the work of ____ on bacteria-infected Amoeba proteus. a. Stanley Miller b. Kwang Jeon c. Thomas Brock d. Lynn Margulis e. Australian researchers
The invasion and multiplication of a pathogen in the human host is referred to as a(n) ______
Fill in the blank(s) with the appropriate word(s).
If a plasma membrane is analogous to the cell, which of the following is analogous to the animal body?
a. a reproductive system b. a muscle system c. the skin d. a digestive system
In Pseudomonas fluorescens, increases in cyclic di-guanosine monophosphate promote biofilm formation by
a. inhibiting activation of a protease that cleaves the large adhesion protein. b. affecting cell surface localization of a large adhesion protein. c. affecting secretion of a large adhesion protein. d. all of the above.