Vertebrates" refers to animals that possess ____

a. hair
b. mammary glands
c. the ability to give birth to live young
d. a backbone
e. lungs


ANSWER: d

Biology & Microbiology

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In capillary exchange, ___ diffuses into the

interstitial fluid, ___ diffuses into the capillaries, and ___ stays in the capillaries.

a. oxygen; carbon dioxide; plasma proteins b. carbon dioxide; oxygen; plasma proteins c. plasma proteins; oxygen; carbon dioxide d. carbon dioxide; plasma proteins; oxygen e. oxygen; plasma proteins; carbon dioxide

Biology & Microbiology

Cardiac muscle cells are connected by special junctions called intercalated discs. Intercalated discs provide strength between cells of tissues which exhibit high mechanical stress, strong flexible connections between tissue cells, and electrical excitability between the cells. Using this information, which junctions are present in intercalated discs?

A. tight, plasmodesmata, and adherens B. gap, adherens, and desmosomes C. tight, plasmodesmata, and desmosomes D. adherens, tight, and gap E. gap, desmosomes, and hemidesmosomes

Biology & Microbiology

In what process does a fertilized egg undergo cell division without further growth?

A. implantation B. morphogenesis C. differentiation D. gastrulation E. cleavage

Biology & Microbiology