The thin, sheetlike basal laminae are found
a. under epithelia.
b. in the cytoplasm just below the plasma membrane.
c. in the extracellular space surrounding all eukaryotic cells.
d. in between adjacent cells connected by gap junctions.
Ans: a. under epithelia.
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In describing the initiation and transmission of action potentials in neurons, it would be INCORRECT to say that
A. the rate of transmission of an action potential is directly related to the diameter of the axon. B. information about the intensity of a stimulus is conveyed by changes in the size of the action potential generated. C. the resting potential is maintained by differential ion permeabilities and the sodium-potassium pump. D. a stimulus to the neuron can either depolarize or hyperpolarize the neuronal membrane.
Meiosis functions in _____
a. asexual reproduction of single-celled eukaryotes b. growth and tissue repair in multicelled species c. sexual reproduction d. asexual reproduction of single-celled eukaryotes and growth and tissue repair in multicelled species
Many plants have evolved leaves that have adjustable pores, called ________, which allow for gas exchange and water loss
Fill in the blank(s) with correct word
Which types of phenotypic ratios are likely to occur in crosses when dealing with a single gene pair for which all the genotypic combinations are of equal viability?
A) 12:3:1, 9:7 B) 1:4:6:4:1, 1:1:1:1 C) 9:3:3:1, 27:9:9:9:3:3:3:1 D) 2:3, 1:2 E) 1:2:1, 3:1