Like the cnidarians, flatworms depend on __________ for achieving circulation and gas exchange
A. blood
B. hemolymph
C. diffusion
D. hearts
E. lungs
C
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________ is a water-soluble hormone derived from the nervous system that regulates blood volume and blood pressure?
A. Antidiuretic hormone B. Aldosterone C. Cortisol D. Oxytocin E. Adrenocorticotropic hormone
The C4 photosynthetic cycle is more efficient than the C3 cycle when the ________
a. climate is hot and dry b. soil is deficient in nitrogen c. climate is cool and damp d. plant is growing at a high altitude
An mRNA codon reads GUA. If a transition mutation occurs at the third base pair, will the final protein be changed?
What will be an ideal response?
If a strand of RNA has the sequence AAGCTC, transcription will result in __________________________________________________________________.
Fill in the blank(s) with the appropriate word(s).