Cellular membranes are mosaic and
A. fluid.
B. rigid.
C. symmetrical.
D. highly permeable to large molecules.
E. All of the choices are correct.
A. fluid.
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In some large groups of plants, including dandelions, oaks, and willows, the biological species concept is complicated because the process of _____ allows gene flow to occur between good _____ that can be easily distinguished based on appearance
A. hybridization; morphospecies B. hybridization; ecological species C. allopatric speciation; ring species D. polyploidy; evolutionary species E. polyploidy; ring species
Which is the last structure that a sperm travels through before it leaves the body?
a. ureter b. urethra c. vas deferens d. vas efferens e. epididymis
Which of the following is NOT an example of an adhesion factor?
A. Lipoteichoic acid B. Glycocalyx C. Mucin D. Fimbriae E. All of the above are examples of adhesions
Nutrient deficient ecosystems are called ________.
Fill in the blank(s) with the appropriate word(s).