According to the Oparin-Haldane hypothesis, ____ was likely absent or near absent in Earth's early atmosphere
a. O2 (oxygen)
b. H2 (hydrogen)
c. CH4 (methane)
d. H2O (in vapor form)
e. NH3 (ammonia)
ANSWER: a
You might also like to view...
Chemotaxis is a sensory response affecting the rotational direction of the flagellar motor
Indicate whether the statement is true or false.
________ is the process through which cells can detect and respond to signals in their extracellular environment.
A. Cell sensation B. Cell communication C. Reception D. Transduction E. Sensory response
The physical appearance of an organism for a given trait is termed:
a. genetics. b. dominance. c. synapsis. d. genotype. e. phenotype.
Which of the following is an example of anabolism?
A. Production of acids B. Combining glucose molecules to form glycogen C. Hydrolysis of starch D. Breaking down glucose into two molecules of pyruvate E. Shivering to generate heat