Which solute must be administered in high amounts because of its very efficient secretion and removal by the kidney tubules?
A. glucose
B. vitamin K
C. amino acids
D. HCO3- ions
E. penicillin
E. penicillin
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What is the photopigment in rod cells called?
A. photopsin B. rhodopsin C. opsin D. carotene E. melanin
The control in an experiment _______.
A. makes the experiment valid B. is an additional replicate for statistical purposes C. reduces the experimental errors D. minimizes experimental inaccuracy E. allows for comparisons to the experimental group
You encounter an animal that is heterotrophic, dependent on light for survival, possesses true tissues, and is diploblastic. You would also expect this organism to also have:
a. Zooxanthellaea b. Nematocysts c. Radial symmetry d. B and C e. all of the above
Which of the following structures allow bacteria to transfer genetic information through conjugation?
A) slime layer B) pili C) capsule D) fimbriae E) glycocalyx