Which of the following indicates the correct sequence of sea urchin egg coverings, beginning at the
outside and moving inward?
a. granulosa cells, zona pellucida, plasma membrane
b. zona pellucida, vitelline envelope, plasma membrane
c. jelly coat, vitelline envelope, plasma membrane
d. plasma membrane, jelly coat, zona pellucida
e. vitelline envelope, jelly coat, plasma membrane
C
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Small polar and charged molecules typically cross the cell membrane by way of ____
a. simple diffusion b. osmosis c. filtration d. active transport e. facilitated diffusion
All of the following choices are advantages of sexual reproduction except ________
a. perpetuation of the largest proportion of an individual's genetic information b. production of diverse types of offspring c. increasing variation by recombination of existing traits d. rapid dissemination of adaptive traits through the population
The ________ is the layer of cell wall material shared between adjacent plant cells
Fill in the blank with correct word.
What large molecules are essential in determining the structure and function of cells and tissues?
a. RNA b. genes c. proteins d. hormones e. nucleotides