If 5000 kilograms of biomass are available at the primary consumer level, how many kilograms of biomass would be available to the tertiary consumers?
A. 10
B. 50
C. 500
D. 5,000
E. 50,000
B
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Which of the following chemicals plays a part in a man's erection?
a. carbon dioxide b. carbon monoxide c. nitric oxide d. phosphoric acid e. carbonic acid
In animal skeletal muscles, red muscle fibers
a. have an abundance of myoglobin. b. are mainly anaerobic. c. have few mitochondria. d. are good for short bursts of activity. e. more than one of these answers is true.
In light-dependent reactions, hydrogen ions are transported into the thylakoid membrane. What drives the
movement of these ions?
a. passive diffusion of ions from high to low concentration b. passive diffusion of ions from low to high concentration c. active transport of ions driven by the hydrolysis of water into oxygen d. active transport of ions driven by energy from the electron transport chain e. active transport through the enzyme ATP synthase
Ribosomes are made up of protein and ________
Fill in the blank(s) with correct word