Some ions move across a membrane using ion channel proteins that are open all the time. Others use _____ ion channel proteins which have the ability to open and close
Fill in the blank(s) with the appropriate word(s).
gated
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In the dark, the Na+ channels in the outer segments of rod cells are
A. open. B. closed. C. primarily affected by inhibitory neurotransmitter input. D. important in making the cell hyperpolarized in this resting state.
In mushrooms, the sexual spores are produced in a(n) ________.
A. sporangiophore B. sporophyte C. basidium D. ascus
To determine the genotype of an individual who expresses a dominant trait, you would cross that individual with an individual who ______.
A. expresses the dominant trait B. is homozygous dominant for that trait C. is homozygous recessive for that trait D. is heterozygous for that trait
The most general and largest category in Linnaeus's system is
a. the phylum b. the kingdom c. the genus d. the domain