The body temperature in humans is maintained around 37 degrees C. Which characteristic of life does this information represent?
a) living things are adapted
b) living things respond to stimuli
c) living things acquire materials and energy from the environment
d) living things are homeostatic
e) living things grow and develop
Ans: d) living things are homeostatic
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The transfer of antibodies through the placenta from mother to fetus is an example of
A) natural passive immunity. B) innate immunity. C) natural active immunity. D) artificial active immunity.
If the inner membrane of the mitochondria were compromised in some way, what effect would this
have on cellular respiration?
a. The transport of electrons across the inner mitochondrial membrane would not occur. b. The proton gradient across the inner mitochondrial membrane would dissipate. c. The ATP synthase enzyme would be denatured. d. The cell would generate more ATP than before. e. ATP would no longer be made anywhere in the cell by any mechanism.
Meiosis is the basis for
a. cellular division. b. sexual reproduction. c. asexual reproduction. d. sexual and asexual reproduction. e. distribution of cytoplasm
The major difference between protostome animals and deuterostome animals is _______.
a) whether or not they reproduce sexually or asexually b) the presence or absence of a gastrovascular cavity c) which opening to the digestive system forms first d) their type of symmetry