Consider the statement “biological systems interact.” What does this mean?
a. Systems combine to reproduce.
b. Biological organisms are interdependent.
c. Structure and function are not interrelated.
d. Biological organisms are not interdependent.
e. Every organism is in conflict with other organisms
b
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The inability of organisms to evolve anything that could be an advantage reflects _____
A) the limits of historical constraints B) the inability to compromise C) the consequences of random mutations D) the consequences of inbreeding
The first life-related and carbon-based
molecule was synthesized in vitro by a German chemist. What was that molecule?
a. starch b. fructose c. acetaldehyde d. urea e. rubisco
What type of channel opens in response to changes in ionic charge across a membrane?
a. an electric-gated channel b. a charge-gated channel c. a ligand-gated channel d. a voltage-gated channel
Which complex does the process of removing introns from mRNA and putting the remaining exons together occur?
a. in the anticodon b. in the polysome c. in the spliceosome d. in the ribosome