For charged particles, transport across the cell membrane is influenced by the concentration gradient and ____

a. the size of the particle
b. pore size
c. electrical gradient
d. ATP production


e. membrane thickness


ANSWER: c

Biology & Microbiology

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Which of the following is an example of a phenotype?

a. a cat’s genome b. the color and length of a cat’s fur c. the alleles that a female passes on to her offspring d. the DNA sequence of an allele e. the DNA sequence of an allele and the alleles that a female passes on to her offspring

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Which list of plants contains only basal angiosperms?

a. magnolia, cinnamon, avocado b. asparagus, bay laurel, orchid c. spice bush, banana, peach d. water lily, yucca, corn

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A(n) sorus is a cluster of sporangia

____________________ Indicate whether the statement is true or false.

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Biodiversity hotspots, not surprisingly, tend to have above-average densities of human populations combined with high human population growth rates.

a. true b. false

Biology & Microbiology