The earliest vertebrates were ________

a. jawless fishes
b. tunicates
c. lancelets
d. placoderms


a

Biology & Microbiology

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People who do not eat meat (vegetarians) must

choose their food carefully to get the necessary a. vitamins. b. minerals. c. carbohydrates. d. amino acids. e. fatty acids.

Biology & Microbiology

The growth process that allows cells to become specialized to carry out specific functions is:

a. cell division. b. cell elongation. c. cell differentiation. d. primary growth. e. secondary growth.

Biology & Microbiology

After a liver cell produces clotting proteins, what type of delivery system will use it to deliver the proteins to the blood?

a. transport vesicles b. free ribosomes c. lysosomes d. secretory vesicles

Biology & Microbiology

In Drosophila, the cells created by cleavage contain different developmental signals from the egg called cytoplasmic

A. determinants. B. signals. C. junctions. D. stem cells.

Biology & Microbiology