The right atrium receives what kind of blood from the rest of the body in a frog?

What will be an ideal response?


Answer: deoxygenated

Biology & Microbiology

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When a reaction reaches equilibrium,

a. there is no longer entropy in the system. b. the chemical reactions cease. c. the rate of the forward and reverse reactions are equal. d. the concentration of reactants equals the concentration of products. e. ATP is no longer required to drive the reaction.

Biology & Microbiology

Which term refers to anatomical features that serve no current function?

a. homologous structures b. adaptations c. original elements d. genetic weaknesses e. vestigial organs

Biology & Microbiology

Where does the mass of the tree come from?

A. Soil B. Sunlight C. Air D. Water

Biology & Microbiology

A chemical that enables some animals to communicate over long distance is called a 

A. hormone. B. pheromone. C. ketone. D. All of these answers are true.

Biology & Microbiology