In aquatic communities, an increase in nutrients usually causes the number of autotrophic species to increase
Indicate whether the statement is true or false
TRUE
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Which of the following statements is true regarding the pollen of gymnosperms and angiosperms? Select all correct choices
A. Pollen grains from both of these plants consist of four cells. B. A single angiosperm produces more pollen than a single gymnosperm. C. Pollen from both types of plant form pollen tubes that factor in fertilization. D. Pollen from both types of plants contain (or will form) haploid (1n) male gametes.
Respiration includes glycolysis, the ________, electron transport, and ________.
Fill in the blank(s) with the appropriate word(s).
The pH of human blood falls within a ________ range that is near a pH of 7.4
Fill in the blank(s) with correct word
Polar, water-soluble hormones usually affect cells by binding to intracellular receptors.
a. true b. false