You return home to find that your baby brother has scattered his toy trains and trucks all over the floor of your room. As you begin to pick up the toys and put them away, you realize that even though he is just a baby, he has clearly mastered
A. the second law of thermodynamics.
B. potential energy.
C. free energy.
D. the first law of thermodynamics.
Answer: A
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The relative percentage of genes devoted to protein synthesis in small-genome organisms is high compared with that of large-genome organisms
Indicate whether the statement is true or false.
How might absorption of organic compounds into clays assist in their aggregation and organization
into membrane-bound protocells?
a. Clays contain many minerals in extremely thin layers and readily repel ions, forcing multiple chemical interactions. b. Clays are highly structured, contain water, and store potential energy that could drive the chemical reactions forward. c. Clays lack water, forcing the concentration of the organic molecules and thus driving multiple interactions. d. Clays are extremely resistant to temperature changes and thus would insulate the organic compounds from temperature changes in the atmosphere. e. None of the above statements accurately explain clays’ possible roles in the formation of protocells.
Which of the following is a source of vitamin K for humans?
A) Bacteroides thetaiotetraiotamicron digests foods, which release vitamin K. B) Escherichia coli in their digestive tract produces vitamin K. C) S. epidermidis releases vitamin K from dead cells. D) their diet only
Discuss the ways in which fungi are both helpful and harmful to human society
What will be an ideal response?