passive transport requires metabolic energy
a. true
b. false
b. false
You might also like to view...
In the absence of a repressor, where will RNA polymerase bind to a prokaryotic operon to initiate transcription?
a. transcriptional start site b. operator c. promoter d. coding region
Which macronutrient is the major source of energy for cell processes?
A) carbohydrates B) proteins C) fats D) water
During a drought on the Galapagos islands, finches with larger beaks were able to crack the large tough seeds produced by plants that survived the dry conditions. This is an example of ________.
A. stabilizing selection B. a founder effect C. directional selection D. disruptive selection E. genetic drift
________ use electrons from reduced inorganic or organic compounds as a source of energy and CO2 as a source of carbon.
a) Photoautotrophs b) Photoheterotrophs c) Chemoautotrophs d) Chemoheterotrophs