The second law of thermodynamics says that during energy transformations, some of the energy will be lost as which of the following?
a. chemical bonds
b. position
c. heat
d. motion
c. heat
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Choose the true statements about the human and tiger pufferfish genomes.
_____ Genes regulating the basic cellular metabolism are conserved in both human and pufferfish genomes. _____ About 25% of the human genes have no counterpart in the pufferfish genome. _____ Being ancestral to humans, the pufferfish genome has more repetitive DNA than the human genome does. _____ The pufferfish genome has twice the amount of DNA as the human genome does.
What occurs during the follicular phase of the ovarian cycle?
_____ Estradiol is secreted from the cumulus mass. _____ Progesterone is secreted from the corpus luteum. _____ The primary oocyte completes meiosis I. _____ The secondary oocyte begins meiosis II. _____ The secondary oocyte completes meiosis II.
Biotic pollution has been particularly harmful to native species:a
in deserts. b. in tundra. c. on islands. d. in tropical rain forests. e. in grasslands.
Flagellated Protista probably gave rise to
A. Archaea. B. Animalia. C. Fungi. D. Plantae.