CO2 and H2O will not form glucose on their own because ____.
A. CO2 does not contain sufficient energy
B. H2O does not contain sufficient energy
C. neither CO2 nor H2O contain sufficient energy
D. the concentration of CO2 is too low in the atmosphere
E. the bonds of CO2 and H2O are too stable to be broken without an input of energy
Answer: E
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The letter “B” in the above figure represents
a. trigger zone. b. output zone. c. input zone. d. conducting zone. e. none of these.
Before Mendel's work was rediscovered, some argued that natural selection would not work because favorable traits would merge into existing traits over time and become lost. This hypothesis is known as ________. [two words]
Fill in the blank(s) with correct word
Which mechanism is NOT used by ncRNAs to bind to other molecules?
A. Complementary base-pairing between the ncRNA and RNA B. Complementary base-pairing between the ncRNA and DNA. C. A stem loop structure in the ncRNA binds to a specific protein structure. D. A stem loop structure in the ncRNA binds to a specific DNA sequence. E. Several stem loop structures form a shape that binds to a small molecule.
A compound that dissociates in water to produce ________ is called a salt
A) hydrogen ions B) anions C) hydroxyl ions D) cations E) anions and cations