Answer the following statements true (T) or false (F)
1. Hagfish are craniates but are not vertebrates.
2. A hagfish is a not a fish.
3. Lampreys' main body support is the notochord, not a vertebral column.
4. Sharks have cartilaginous skeletons because bone-forming ability had not yet evolved in vertebrates when they originated.
5. The swim bladder is an organ in primitive fish from which the lungs of terrestrial vertebrates developed.
1. TRUE
2. TRUE
3. TRUE
4. FALSE
5. FALSE
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What term refers to the ability of a cell membrane to regulate which molecules can enter and exit the cell?
a. transport selection b. osmosis c. cell recognition d. selective permeability e. fluidity
All microscopes have objective "lenses."
a. True b. False
Anoxic oxidation of ammonia occurs within membrane-enclosed ________ compartments within cells
a. reaction center b. carboxysome c. heterocyst d. anammoxosome
Which two nucleotides also serve as transporters of chemical energy?
a. ATP and GTP b. ATP and CTP c. ATP and TTP d. CTP and TTP e. CTP and UTP