Polyploid organisms ________
A) are transgenic
B) are created from ES cells
C) are knockout organisms
D) have different numbers of each chromosome
E) have extra complete sets of chromosomes
E
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Which gas is increasing in the atmosphere and
intensifying the greenhouse effect? a. carbon dioxide b. carbon monoxide c. ozone d. nitrogen e. oxygen
Growth __________, but development __________
a. is qualitative; is quantitative b. is measured by increased cell numbers; is measured by increased cell specialization c. occurs only in infants; occurs only in adolescents d. continues throughout life; stops at puberty e. is objective; is subjective
Which sentence describes the relationship between sporophyte and gametophyte in the fern life cycle?
a. Gametophytes are photosynthetic and partially independent from the sporophytes. b. Both gametophytes and sporophytes are totally independent from each other and are equally dominant. c. Sporophytes originate within and are dependent upon gametophytes. d. Gametophytes are free living and photosynthetic, but are replaced by a dominant sporophyte generation.
Cells use exocytosis to
A) ingest nutrients. B) pump hydrogen molecules across the membrane. C) create new cells. D) release substances from the cell. E) move away from danger.