An atom that gains or loses electrons becomes
a. more stable.
b. an ion.
c. a molecule.
d. unable to form bonds.
e. radioactive.
Answer: b
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A denatured protein has lost its _____________________
Fill in the blank(s) with the appropriate word(s).
A respiratory surface is indicated by
a. A. b. B. c. C. d. D. e. E.
Which of the following is(are) fixed action
pattern(s)? a. A baby garter snake captures and eats a slug. b. A chick’s gaping mouth induces a feeding response in a parent bird. c. A European cuckoo hatchling pushes the host bird's egg out of the nest. d. A male fruit fly waves his wings at a female fruit fly during courtship. e. All of these are fixed action patterns
When a species is introduced into a habitat that is not its natural ecosystem, the species could become "invasive." Which of the following is NOT a characteristic of an "invasive" species?
a) invasive species will spread very quickly through a habitat b) invasive species will outcompete the native species for resources c) invasive species are often introduced either accidentally or purposely by humans d) invasive species never have negative effects on a new habitat's biodiversity e) invasive species can lead to the extinction of other native species